diff --git a/Telegram/CMakeLists.txt b/Telegram/CMakeLists.txt
index 8d1d2369d..a562048ec 100644
--- a/Telegram/CMakeLists.txt
+++ b/Telegram/CMakeLists.txt
@@ -466,6 +466,8 @@ PRIVATE
     data/business/data_business_info.h
     data/business/data_shortcut_messages.cpp
     data/business/data_shortcut_messages.h
+    data/components/factchecks.cpp
+    data/components/factchecks.h
     data/components/recent_peers.cpp
     data/components/recent_peers.h
     data/components/scheduled_messages.cpp
diff --git a/Telegram/Resources/langs/lang.strings b/Telegram/Resources/langs/lang.strings
index 8cf16783d..6b28b450e 100644
--- a/Telegram/Resources/langs/lang.strings
+++ b/Telegram/Resources/langs/lang.strings
@@ -3287,6 +3287,12 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 "lng_context_spoiler_effect" = "Hide with Spoiler";
 "lng_context_disable_spoiler" = "Remove Spoiler";
+"lng_context_add_factcheck" = "Add Fact Check";
+
+"lng_factcheck_title" = "Fact Check";
+"lng_factcheck_placeholder" = "Add Facts or Context";
+"lng_factcheck_whats_this" = "what's this?";
+"lng_factcheck_about" = "This clarification was provided by a fact checking agency assigned by the department of the government of your country ({country}) responsible for combatting misinformation.";
 
 "lng_translate_show_original" = "Show Original";
 "lng_translate_bar_to" = "Translate to {name}";
diff --git a/Telegram/SourceFiles/data/components/factchecks.cpp b/Telegram/SourceFiles/data/components/factchecks.cpp
index 4e5fcd090..0423d1d43 100644
--- a/Telegram/SourceFiles/data/components/factchecks.cpp
+++ b/Telegram/SourceFiles/data/components/factchecks.cpp
@@ -10,6 +10,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "apiwrap.h"
 #include "base/random.h"
 #include "data/data_session.h"
+#include "data/data_web_page.h"
 #include "history/view/media/history_view_web_page.h"
 #include "history/view/history_view_message.h"
 #include "history/history.h"
@@ -126,6 +127,7 @@ std::unique_ptr<HistoryView::WebPage> Factchecks::makeMedia(
 			base::RandomValue<WebPageId>(),
 			tr::lng_factcheck_title(tr::now),
 			factcheck->data.text);
+		factcheck->page->type = WebPageType::Factcheck;
 	}
 	return std::make_unique<HistoryView::WebPage>(
 		view,
diff --git a/Telegram/SourceFiles/data/data_web_page.h b/Telegram/SourceFiles/data/data_web_page.h
index 8b82ed859..6497a0394 100644
--- a/Telegram/SourceFiles/data/data_web_page.h
+++ b/Telegram/SourceFiles/data/data_web_page.h
@@ -54,6 +54,8 @@ enum class WebPageType : uint8 {
 
 	VoiceChat,
 	Livestream,
+
+	Factcheck,
 };
 [[nodiscard]] WebPageType ParseWebPageType(const MTPDwebPage &type);
 [[nodiscard]] bool IgnoreIv(WebPageType type);
diff --git a/Telegram/SourceFiles/history/admin_log/history_admin_log_item.cpp b/Telegram/SourceFiles/history/admin_log/history_admin_log_item.cpp
index 5e46d8d97..19f76be07 100644
--- a/Telegram/SourceFiles/history/admin_log/history_admin_log_item.cpp
+++ b/Telegram/SourceFiles/history/admin_log/history_admin_log_item.cpp
@@ -111,7 +111,8 @@ MTPMessage PrepareLogMessage(const MTPMessage &message, TimeId newDate) {
 			| MTPDmessage::Flag::f_forwards
 			//| MTPDmessage::Flag::f_reactions
 			| MTPDmessage::Flag::f_restriction_reason
-			| MTPDmessage::Flag::f_ttl_period;
+			| MTPDmessage::Flag::f_ttl_period
+			| MTPDmessage::Flag::f_factcheck;
 		return MTP_message(
 			MTP_flags(data.vflags().v & ~removeFlags),
 			data.vid(),
@@ -141,7 +142,7 @@ MTPMessage PrepareLogMessage(const MTPMessage &message, TimeId newDate) {
 			MTPint(), // ttl_period
 			MTPint(), // quick_reply_shortcut_id
 			MTP_long(data.veffect().value_or_empty()),
-			data.vfactcheck() ? *data.vfactcheck() : MTPFactCheck());
+			MTPFactCheck());
 	});
 }
 
diff --git a/Telegram/SourceFiles/history/view/history_view_message.cpp b/Telegram/SourceFiles/history/view/history_view_message.cpp
index 861c96ee7..564ea3b7b 100644
--- a/Telegram/SourceFiles/history/view/history_view_message.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_message.cpp
@@ -586,10 +586,11 @@ void Message::animateReaction(Ui::ReactionFlyAnimationArgs &&args) {
 	}
 
 	if (bubble) {
-		auto entry = logEntryOriginal();
+		const auto check = factcheckBlock();
+		const auto entry = logEntryOriginal();
 
 		// Entry page is always a bubble bottom.
-		auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || (entry/* && entry->isBubbleBottom()*/);
+		auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || check || (entry/* && entry->isBubbleBottom()*/);
 		auto mediaOnTop = (mediaDisplayed && media->isBubbleTop()) || (entry && entry->isBubbleTop());
 
 		auto inner = g;
@@ -636,10 +637,11 @@ void Message::animateEffect(Ui::ReactionFlyAnimationArgs &&args) {
 		_bottomInfo.animateEffect(args.translated(-bottomRight), repainter);
 	};
 	if (bubble) {
-		auto entry = logEntryOriginal();
+		const auto entry = logEntryOriginal();
+		const auto check = factcheckBlock();
 
 		// Entry page is always a bubble bottom.
-		auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || (entry/* && entry->isBubbleBottom()*/);
+		auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || check || (entry/* && entry->isBubbleBottom()*/);
 		auto mediaOnTop = (mediaDisplayed && media->isBubbleTop()) || (entry && entry->isBubbleTop());
 
 		auto inner = g;
@@ -732,10 +734,11 @@ QRect Message::effectIconGeometry() const {
 			bottomRight - QPoint(size.width(), size.height()));
 	};
 	if (bubble) {
-		auto entry = logEntryOriginal();
+		const auto entry = logEntryOriginal();
+		const auto check = factcheckBlock();
 
 		// Entry page is always a bubble bottom.
-		auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || (entry/* && entry->isBubbleBottom()*/);
+		auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || check || (entry/* && entry->isBubbleBottom()*/);
 		auto mediaOnTop = (mediaDisplayed && media->isBubbleTop()) || (entry && entry->isBubbleTop());
 
 		auto inner = g;
@@ -806,14 +809,6 @@ QSize Message::performCountOptimalSize() {
 		Get<Factcheck>()->page = history()->session().factchecks().makeMedia(
 			this,
 			factcheck);
-
-		auto copy = data()->originalText();
-		if (!copy.text.contains("FACT CHECK")) {
-			copy.append("\n\nFACT CHECK!!\n\n").append(factcheck->data.text);
-			crl::on_main(this, [=] {
-				data()->setText(std::move(copy));
-			});
-		}
 	} else {
 		RemoveComponents(Factcheck::Bit());
 	}
@@ -863,6 +858,7 @@ QSize Message::performCountOptimalSize() {
 		const auto forwarded = item->Get<HistoryMessageForwarded>();
 		const auto via = item->Get<HistoryMessageVia>();
 		const auto entry = logEntryOriginal();
+		const auto check = factcheckBlock();
 		if (forwarded) {
 			forwarded->create(via, item);
 		}
@@ -872,13 +868,16 @@ QSize Message::performCountOptimalSize() {
 			mediaDisplayed = media->isDisplayed();
 			media->initDimensions();
 		}
+		if (check) {
+			check->initDimensions();
+		}
 		if (entry) {
 			entry->initDimensions();
 		}
 
 		// Entry page is always a bubble bottom.
 		const auto withVisibleText = hasVisibleText();
-		auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || (entry/* && entry->isBubbleBottom()*/);
+		auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || check || (entry/* && entry->isBubbleBottom()*/);
 		auto mediaOnTop = (mediaDisplayed && media->isBubbleTop()) || (entry && entry->isBubbleTop());
 		maxWidth = plainMaxWidth();
 		if (context() == Context::Replies && item->isDiscussionPost()) {
@@ -918,6 +917,7 @@ QSize Message::performCountOptimalSize() {
 			minHeight += st::msgPadding.top();
 			if (mediaDisplayed) minHeight += st::mediaInBubbleSkip;
 			if (entry) minHeight += st::mediaInBubbleSkip;
+			if (check) minHeight += st::mediaInBubbleSkip;
 		}
 		if (mediaDisplayed) {
 			// Parts don't participate in maxWidth() in case of media message.
@@ -1002,6 +1002,10 @@ QSize Message::performCountOptimalSize() {
 					+ st::msgPadding.right();
 				accumulate_max(maxWidth, replyw);
 			}
+			if (check) {
+				accumulate_max(maxWidth, check->maxWidth());
+				minHeight += check->minHeight();
+			}
 			if (entry) {
 				accumulate_max(maxWidth, entry->maxWidth());
 				minHeight += entry->minHeight();
@@ -1121,11 +1125,12 @@ void Message::draw(Painter &p, const PaintContext &context) const {
 		return;
 	}
 
-	auto entry = logEntryOriginal();
+	const auto entry = logEntryOriginal();
+	const auto check = factcheckBlock();
 	auto mediaDisplayed = media && media->isDisplayed();
 
 	// Entry page is always a bubble bottom.
-	auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || (entry/* && entry->isBubbleBottom()*/);
+	auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || check || (entry/* && entry->isBubbleBottom()*/);
 	auto mediaOnTop = (mediaDisplayed && media->isBubbleTop()) || (entry && entry->isBubbleTop());
 
 	const auto displayInfo = needInfoDisplay();
@@ -1150,6 +1155,9 @@ void Message::draw(Painter &p, const PaintContext &context) const {
 		if (!mediaOnBottom && (!_viewButton || !reactionsInBubble)) {
 			localMediaBottom -= st::msgPadding.bottom();
 		}
+		if (check) {
+			localMediaBottom -= check->height();
+		}
 		if (entry) {
 			localMediaBottom -= entry->height();
 		}
@@ -1299,6 +1307,9 @@ void Message::draw(Painter &p, const PaintContext &context) const {
 		if (entry) {
 			trect.setHeight(trect.height() - entry->height());
 		}
+		if (check) {
+			trect.setHeight(trect.height() - check->height());
+		}
 		if (displayInfo) {
 			trect.setHeight(trect.height()
 				- (_bottomInfo.height() - st::msgDateFont->height));
@@ -1358,6 +1369,19 @@ void Message::draw(Painter &p, const PaintContext &context) const {
 				}
 			}
 		}
+		if (check) {
+			auto checkLeft = inner.left();
+			auto checkTop = trect.y() + trect.height();
+			p.translate(checkLeft, checkTop);
+			auto checkContext = context.translated(checkLeft, -checkTop);
+			checkContext.selection = skipTextSelection(context.selection);
+			if (mediaDisplayed) {
+				checkContext.selection = media->skipSelection(
+					checkContext.selection);
+			}
+			check->draw(p, checkContext);
+			p.translate(-checkLeft, -checkTop);
+		}
 		if (entry) {
 			auto entryLeft = inner.left();
 			auto entryTop = trect.y() + trect.height();
@@ -1924,10 +1948,11 @@ PointState Message::pointState(QPoint point) const {
 		}
 		if (const auto mediaDisplayed = media && media->isDisplayed()) {
 			// Hack for grouped media point state.
-			auto entry = logEntryOriginal();
+			const auto entry = logEntryOriginal();
+			const auto check = factcheckBlock();
 
 			// Entry page is always a bubble bottom.
-			auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || (entry/* && entry->isBubbleBottom()*/);
+			auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || check || (entry/* && entry->isBubbleBottom()*/);
 
 			if (item->repliesAreComments() || item->externalReply()) {
 				g.setHeight(g.height() - st::historyCommentsButtonHeight);
@@ -1959,6 +1984,10 @@ PointState Message::pointState(QPoint point) const {
 			//	if (getStateReplyInfo(point, trect, &result)) return result;
 			//	if (getStateViaBotIdInfo(point, trect, &result)) return result;
 			//}
+			if (check) {
+				auto checkHeight = check->height();
+				trect.setHeight(trect.height() - checkHeight);
+			}
 			if (entry) {
 				auto entryHeight = entry->height();
 				trect.setHeight(trect.height() - entryHeight);
@@ -1995,6 +2024,9 @@ void Message::clickHandlerPressedChanged(
 		}
 	}
 	Element::clickHandlerPressedChanged(handler, pressed);
+	if (const auto check = factcheckBlock()) {
+		check->clickHandlerPressedChanged(handler, pressed);
+	}
 	if (!handler) {
 		return;
 	} else if (_rightAction && (handler == _rightAction->link)) {
@@ -2306,10 +2338,11 @@ TextState Message::textState(
 
 	if (bubble) {
 		const auto inBubble = g.contains(point);
-		auto entry = logEntryOriginal();
+		const auto check = factcheckBlock();
+		const auto entry = logEntryOriginal();
 
 		// Entry page is always a bubble bottom.
-		auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || (entry/* && entry->isBubbleBottom()*/);
+		auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || check || (entry/* && entry->isBubbleBottom()*/);
 		auto mediaOnTop = (mediaDisplayed && media->isBubbleTop()) || (entry && entry->isBubbleTop());
 
 		auto inner = g;
@@ -2393,9 +2426,23 @@ TextState Message::textState(
 					+ visibleMediaTextLength();
 			}
 		}
+		if (check) {
+			auto checkHeight = check->height();
+			trect.setHeight(trect.height() - checkHeight);
+			auto checkLeft = inner.left();
+			auto checkTop = trect.y() + trect.height();
+			if (point.y() >= checkTop && point.y() < checkTop + checkHeight) {
+				result = check->textState(
+					point - QPoint(checkLeft, checkTop),
+					request);
+				result.symbol += visibleTextLength()
+					+ visibleMediaTextLength();
+			}
+		}
 
 		auto checkBottomInfoState = [&] {
-			if (mediaOnBottom && (entry || media->customInfoLayout())) {
+			if (mediaOnBottom
+				&& (check || entry || media->customInfoLayout())) {
 				return;
 			}
 			const auto bottomInfoResult = bottomInfoTextState(
@@ -2862,6 +2909,7 @@ void Message::updatePressed(QPoint point) {
 TextForMimeData Message::selectedText(TextSelection selection) const {
 	const auto media = this->media();
 	auto logEntryOriginalResult = TextForMimeData();
+	auto factcheckResult = TextForMimeData();
 	const auto mediaDisplayed = (media && media->isDisplayed());
 	const auto mediaBefore = mediaDisplayed && invertMedia();
 	const auto textSelection = mediaBefore
@@ -2876,7 +2924,15 @@ TextForMimeData Message::selectedText(TextSelection selection) const {
 	auto mediaResult = (mediaDisplayed || isHiddenByGroup())
 		? media->selectedText(mediaSelection)
 		: TextForMimeData();
-	if (auto entry = logEntryOriginal()) {
+	if (const auto check = factcheckBlock()) {
+		const auto checkSelection = mediaBefore
+			? skipTextSelection(textSelection)
+			: mediaDisplayed
+			? media->skipSelection(mediaSelection)
+			: skipTextSelection(selection);
+		factcheckResult = check->selectedText(checkSelection);
+	}
+	if (const auto entry = logEntryOriginal()) {
 		const auto originalSelection = mediaBefore
 			? skipTextSelection(textSelection)
 			: mediaDisplayed
@@ -2892,6 +2948,11 @@ TextForMimeData Message::selectedText(TextSelection selection) const {
 	} else if (!second.empty()) {
 		result.append(u"\n\n"_q).append(std::move(second));
 	}
+	if (result.empty()) {
+		result = std::move(factcheckResult);
+	} else if (!factcheckResult.empty()) {
+		result.append(u"\n\n"_q).append(std::move(factcheckResult));
+	}
 	if (result.empty()) {
 		result = std::move(logEntryOriginalResult);
 	} else if (!logEntryOriginalResult.empty()) {
@@ -2981,6 +3042,21 @@ TextSelection Message::adjustSelection(
 			? mediaAdjusted
 			: unskipTextSelection(mediaAdjusted);
 	}
+	auto checkResult = TextSelection();
+	if (const auto check = factcheckBlock()) {
+		auto checkSelection = !mediaDisplayed
+			? skipTextSelection(selection)
+			: mediaBefore
+			? skipTextSelection(textSelection)
+			: media->skipSelection(mediaSelection);
+		auto checkAdjusted = useSelection(checkSelection, true)
+			? check->adjustSelection(checkSelection, type)
+			: checkSelection;
+		checkResult = unskipTextSelection(checkAdjusted);
+		if (mediaDisplayed) {
+			checkResult = media->unskipSelection(checkResult);
+		}
+	}
 	auto entryResult = TextSelection();
 	if (const auto entry = logEntryOriginal()) {
 		auto entrySelection = !mediaDisplayed
@@ -3003,6 +3079,12 @@ TextSelection Message::adjustSelection(
 			std::max(result.to, mediaResult.to),
 		};
 	}
+	if (!checkResult.empty()) {
+		result = result.empty() ? checkResult : TextSelection{
+			std::min(result.from, checkResult.from),
+			std::max(result.to, checkResult.to),
+		};
+	}
 	if (!entryResult.empty()) {
 		result = result.empty() ? entryResult : TextSelection{
 			std::min(result.from, entryResult.from),
@@ -3410,6 +3492,13 @@ WebPage *Message::logEntryOriginal() const {
 	return nullptr;
 }
 
+WebPage *Message::factcheckBlock() const {
+	if (const auto entry = Get<Factcheck>()) {
+		return entry->page.get();
+	}
+	return nullptr;
+}
+
 bool Message::toggleSelectionByHandlerClick(
 		const ClickHandlerPtr &handler) const {
 	if (_comments && _comments->link == handler) {
@@ -3539,7 +3628,9 @@ bool Message::drawBubble() const {
 	const auto item = data();
 	if (isHidden()) {
 		return false;
-	} else if (logEntryOriginal() || item->isFakeAboutView()) {
+	} else if (logEntryOriginal()
+		|| factcheckBlock()
+		|| item->isFakeAboutView()) {
 		return true;
 	}
 	const auto media = this->media();
@@ -3560,7 +3651,7 @@ bool Message::unwrapped() const {
 	const auto item = data();
 	if (isHidden()) {
 		return true;
-	} else if (logEntryOriginal()) {
+	} else if (logEntryOriginal() || factcheckBlock()) {
 		return false;
 	}
 	const auto media = this->media();
@@ -3921,8 +4012,22 @@ void Message::updateMediaInBubbleState() {
 			|| Has<Reply>()
 			|| item->Has<HistoryMessageVia>();
 	};
-	auto entry = logEntryOriginal();
-	if (entry) {
+	const auto entry = logEntryOriginal();
+	const auto check = factcheckBlock();
+	if (check) {
+		mediaHasSomethingBelow = true;
+		mediaHasSomethingAbove = getMediaHasSomethingAbove();
+		auto checkState = (mediaHasSomethingAbove
+			|| hasVisibleText()
+			|| (media && media->isDisplayed()))
+			? MediaInBubbleState::Bottom
+			: MediaInBubbleState::None;
+		check->setInBubbleState(checkState);
+		if (!media) {
+			check->setBubbleRounding(countBubbleRounding());
+			return;
+		}
+	} else if (entry) {
 		mediaHasSomethingBelow = true;
 		mediaHasSomethingAbove = getMediaHasSomethingAbove();
 		auto entryState = (mediaHasSomethingAbove
@@ -3947,7 +4052,7 @@ void Message::updateMediaInBubbleState() {
 		return;
 	}
 
-	if (!entry) {
+	if (!check && !entry) {
 		mediaHasSomethingAbove = getMediaHasSomethingAbove();
 	}
 	if (!invertMedia() && hasVisibleText()) {
@@ -4214,10 +4319,11 @@ int Message::resizeContentGetHeight(int newWidth) {
 	if (bubble) {
 		auto reply = Get<Reply>();
 		auto via = item->Get<HistoryMessageVia>();
-		auto entry = logEntryOriginal();
+		const auto check = factcheckBlock();
+		const auto entry = logEntryOriginal();
 
 		// Entry page is always a bubble bottom.
-		auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || (entry/* && entry->isBubbleBottom()*/);
+		auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || check || (entry/* && entry->isBubbleBottom()*/);
 		auto mediaOnTop = (mediaDisplayed && media->isBubbleTop()) || (entry && entry->isBubbleTop());
 
 		if (reactionsInBubble) {
@@ -4226,12 +4332,20 @@ int Message::resizeContentGetHeight(int newWidth) {
 
 		if (contentWidth == maxWidth()) {
 			if (mediaDisplayed) {
+				if (check) {
+					newHeight += check->resizeGetHeight(contentWidth);
+				}
 				if (entry) {
 					newHeight += entry->resizeGetHeight(contentWidth);
 				}
-			} else if (entry) {
-				// In case of text-only message it is counted in minHeight already.
-				entry->resizeGetHeight(contentWidth);
+			} else {
+				if (check) {
+					check->resizeGetHeight(contentWidth);
+				}
+				if (entry) {
+					// In case of text-only message it is counted in minHeight already.
+					entry->resizeGetHeight(contentWidth);
+				}
 			}
 		} else {
 			const auto withVisibleText = hasVisibleText();
@@ -4251,15 +4365,24 @@ int Message::resizeContentGetHeight(int newWidth) {
 			if (!mediaOnTop) {
 				newHeight += st::msgPadding.top();
 				if (mediaDisplayed) newHeight += st::mediaInBubbleSkip;
+				if (check) newHeight += st::mediaInBubbleSkip;
 				if (entry) newHeight += st::mediaInBubbleSkip;
 			}
 			if (mediaDisplayed) {
 				newHeight += media->height();
+				if (check) {
+					newHeight += check->resizeGetHeight(contentWidth);
+				}
+				if (entry) {
+					newHeight += entry->resizeGetHeight(contentWidth);
+				}
+			} else {
+				if (check) {
+					newHeight += check->resizeGetHeight(contentWidth);
+				}
 				if (entry) {
 					newHeight += entry->resizeGetHeight(contentWidth);
 				}
-			} else if (entry) {
-				newHeight += entry->resizeGetHeight(contentWidth);
 			}
 			if (reactionsInBubble) {
 				if (!mediaDisplayed || _viewButton) {
@@ -4343,9 +4466,12 @@ int Message::resizeContentGetHeight(int newWidth) {
 bool Message::needInfoDisplay() const {
 	const auto media = this->media();
 	const auto mediaDisplayed = media ? media->isDisplayed() : false;
+	const auto check = factcheckBlock();
 	const auto entry = logEntryOriginal();
 	return entry
 		? !entry->customInfoLayout()
+		: check
+		? !check->customInfoLayout()
 		: ((mediaDisplayed && media->isBubbleBottom())
 			? !media->customInfoLayout()
 			: true);
diff --git a/Telegram/SourceFiles/history/view/history_view_message.h b/Telegram/SourceFiles/history/view/history_view_message.h
index 5f64193d7..240e1a47a 100644
--- a/Telegram/SourceFiles/history/view/history_view_message.h
+++ b/Telegram/SourceFiles/history/view/history_view_message.h
@@ -47,6 +47,7 @@ struct LogEntryOriginal
 struct Factcheck
 : public RuntimeComponent<Factcheck, Element> {
 	std::unique_ptr<WebPage> page;
+	bool expanded = false;
 };
 
 struct PsaTooltipState : public RuntimeComponent<PsaTooltipState, Element> {
@@ -294,6 +295,7 @@ private:
 	[[nodiscard]] int viewButtonHeight() const;
 
 	[[nodiscard]] WebPage *logEntryOriginal() const;
+	[[nodiscard]] WebPage *factcheckBlock() const;
 
 	[[nodiscard]] ClickHandlerPtr createGoToCommentsLink() const;
 	[[nodiscard]] ClickHandlerPtr psaTooltipLink() const;
diff --git a/Telegram/SourceFiles/history/view/media/history_view_web_page.cpp b/Telegram/SourceFiles/history/view/media/history_view_web_page.cpp
index 0181d7da3..77d6fa5ea 100644
--- a/Telegram/SourceFiles/history/view/media/history_view_web_page.cpp
+++ b/Telegram/SourceFiles/history/view/media/history_view_web_page.cpp
@@ -8,6 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "history/view/media/history_view_web_page.h"
 
 #include "core/application.h"
+#include "countries/countries_instance.h"
 #include "base/qt/qt_key_modifiers.h"
 #include "window/window_session_controller.h"
 #include "iv/iv_instance.h"
@@ -19,13 +20,14 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_photo_media.h"
 #include "data/data_session.h"
 #include "data/data_web_page.h"
-#include "history/history.h"
-#include "history/history_item_components.h"
-#include "history/view/history_view_cursor_state.h"
-#include "history/view/history_view_reply.h"
-#include "history/view/history_view_sponsored_click_handler.h"
 #include "history/view/media/history_view_media_common.h"
 #include "history/view/media/history_view_sticker.h"
+#include "history/view/history_view_cursor_state.h"
+#include "history/view/history_view_message.h"
+#include "history/view/history_view_reply.h"
+#include "history/view/history_view_sponsored_click_handler.h"
+#include "history/history.h"
+#include "history/history_item_components.h"
 #include "lang/lang_keys.h"
 #include "main/main_session.h"
 #include "menu/menu_sponsored.h"
@@ -36,13 +38,16 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/text/format_values.h"
 #include "ui/text/text_options.h"
 #include "ui/text/text_utilities.h"
+#include "ui/toast/toast.h"
 #include "styles/style_chat.h"
 
 namespace HistoryView {
 namespace {
 
 constexpr auto kMaxOriginalEntryLines = 8192;
+constexpr auto kFactcheckCollapsedLines = 3;
 constexpr auto kStickerSetLines = 3;
+constexpr auto kFactcheckAboutDuration = 5 * crl::time(1000);
 
 [[nodiscard]] int ArticleThumbWidth(not_null<PhotoData*> thumb, int height) {
 	const auto size = thumb->location(Data::PhotoSize::Thumbnail);
@@ -148,6 +153,39 @@ constexpr auto kStickerSetLines = 3;
 	});
 }
 
+[[nodiscard]] ClickHandlerPtr AboutFactcheckClickHandler(QString iso2) {
+	return std::make_shared<LambdaClickHandler>([=](ClickContext context) {
+		const auto my = context.other.value<ClickHandlerContext>();
+		const auto controller = my.sessionWindow.get();
+		const auto show = my.show
+			? my.show
+			: controller
+			? controller->uiShow()
+			: nullptr;
+		if (show) {
+			const auto name = Countries::Instance().countryNameByISO2(iso2);
+			const auto use = name.isEmpty() ? iso2 : name;
+			show->showToast({
+				.text = { tr::lng_factcheck_about(tr::now, lt_country, use) },
+				.duration = kFactcheckAboutDuration,
+			});
+		}
+	});
+}
+
+[[nodiscard]] ClickHandlerPtr ToggleFactcheckClickHandler(
+		not_null<Element*> view) {
+	const auto weak = base::make_weak(view);
+	return std::make_shared<LambdaClickHandler>([=](ClickContext context) {
+		if (const auto strong = weak.get()) {
+			if (const auto factcheck = strong->Get<Factcheck>()) {
+				factcheck->expanded = !factcheck->expanded;
+				strong->history()->owner().requestViewResize(strong);
+			}
+		}
+	});
+}
+
 [[nodiscard]] TextWithEntities PageToPhrase(not_null<WebPageData*> page) {
 	const auto type = page->type;
 	const auto text = Ui::Text::Upper(page->iv
@@ -234,32 +272,55 @@ WebPage::WebPage(
 : Media(parent)
 , _st(st::historyPagePreview)
 , _data(data)
-, _sponsoredData([&]() -> std::optional<SponsoredData> {
-	if (!(flags & MediaWebPageFlag::Sponsored)) {
-		return std::nullopt;
-	}
-	const auto &session = _parent->data()->history()->session();
-	const auto details = session.sponsoredMessages().lookupDetails(
-		_parent->data()->fullId());
-	auto result = std::make_optional<SponsoredData>();
-	result->buttonText = details.buttonText;
-	result->isLinkInternal = details.isLinkInternal;
-	result->backgroundEmojiId = details.backgroundEmojiId;
-	result->colorIndex = details.colorIndex;
-	result->canReport = details.canReport;
-	return result;
-}())
+, _flags(flags)
 , _siteName(st::msgMinWidth - _st.padding.left() - _st.padding.right())
 , _title(st::msgMinWidth - _st.padding.left() - _st.padding.right())
-, _description(st::msgMinWidth - _st.padding.left() - _st.padding.right())
-, _flags(flags) {
+, _description(st::msgMinWidth - _st.padding.left() - _st.padding.right()) {
 	history()->owner().registerWebPageView(_data, _parent);
 }
 
+void WebPage::setupAdditionalData() {
+	if (_flags & MediaWebPageFlag::Sponsored) {
+		_additionalData = std::make_unique<AdditionalData>(SponsoredData());
+		const auto raw = sponsoredData();
+		const auto &session = _parent->data()->history()->session();
+		const auto details = session.sponsoredMessages().lookupDetails(
+			_parent->data()->fullId());
+		raw->buttonText = details.buttonText;
+		raw->isLinkInternal = details.isLinkInternal ? 1 : 0;
+		raw->backgroundEmojiId = details.backgroundEmojiId;
+		raw->colorIndex = details.colorIndex;
+		raw->canReport = details.canReport ? 1 : 0;
+	} else if (_data->stickerSet) {
+		_additionalData = std::make_unique<AdditionalData>(StickerSetData());
+		const auto raw = stickerSetData();
+		for (const auto &sticker : _data->stickerSet->items) {
+			if (!sticker->sticker()) {
+				continue;
+			}
+			raw->views.push_back(
+				std::make_unique<Sticker>(_parent, sticker, true));
+		}
+		const auto side = std::ceil(std::sqrt(raw->views.size()));
+		const auto box = UnitedLineHeight() * kStickerSetLines;
+		const auto single = box / side;
+		for (const auto &view : raw->views) {
+			view->setWebpagePart();
+			view->initSize(single);
+		}
+	} else if (_data->type == WebPageType::Factcheck) {
+		_additionalData = std::make_unique<AdditionalData>(FactcheckData());
+	}
+}
+
 QSize WebPage::countOptimalSize() {
 	if (_data->pendingTill || _data->failed) {
 		return { 0, 0 };
 	}
+	setupAdditionalData();
+
+	const auto sponsored = sponsoredData();
+	const auto factcheck = factcheckData();
 
 	// Detect _openButtonWidth before counting paddings.
 	_openButton = Ui::Text::String();
@@ -274,12 +335,10 @@ QSize WebPage::countOptimalSize() {
 			PageToPhrase(_data),
 			kMarkupTextOptions,
 			context);
-	} else if (_sponsoredData) {
-		if (!_sponsoredData->buttonText.isEmpty()) {
-			_openButton.setText(
-				st::semiboldTextStyle,
-				Ui::Text::Upper(_sponsoredData->buttonText));
-		}
+	} else if (sponsored && !sponsored->buttonText.isEmpty()) {
+		_openButton.setText(
+			st::semiboldTextStyle,
+			Ui::Text::Upper(sponsored->buttonText));
 	}
 
 	const auto padding = inBubblePadding() + innerMargin();
@@ -296,25 +355,7 @@ QSize WebPage::countOptimalSize() {
 	}
 	const auto lineHeight = UnitedLineHeight();
 
-	if (_data->stickerSet && !_stickerSet) {
-		_stickerSet = std::make_unique<StickerSet>();
-		for (const auto &sticker : _data->stickerSet->items) {
-			if (!sticker->sticker()) {
-				continue;
-			}
-			_stickerSet->views.push_back(
-				std::make_unique<Sticker>(_parent, sticker, true));
-		}
-		const auto side = std::ceil(std::sqrt(_stickerSet->views.size()));
-		const auto box = lineHeight * kStickerSetLines;
-		const auto single = box / side;
-		for (const auto &view : _stickerSet->views) {
-			view->setWebpagePart();
-			view->initSize(single);
-		}
-	}
-
-	if (!_openl && (!_data->url.isEmpty() || _sponsoredData)) {
+	if (!_openl && (!_data->url.isEmpty() || sponsored || factcheck)) {
 		const auto original = _parent->data()->originalText();
 		const auto previewOfHiddenUrl = [&] {
 			if (_data->type == WebPageType::BotApp) {
@@ -352,28 +393,31 @@ QSize WebPage::countOptimalSize() {
 			}
 			return true;
 		}();
-		_openl = _data->iv
-			? IvClickHandler(_data, original)
-			: (previewOfHiddenUrl || UrlClickHandler::IsSuspicious(
-				_data->url))
-			? std::make_shared<HiddenUrlClickHandler>(_data->url)
-			: std::make_shared<UrlClickHandler>(_data->url, true);
-		if (_data->document
+		if (sponsored) {
+			_openl = SponsoredLink(_data->url, sponsored->isLinkInternal);
+			if (sponsored->canReport) {
+				sponsored->hint.link = AboutSponsoredClickHandler();
+			}
+		} else if (factcheck) {
+			const auto item = _parent->data();
+			if (const auto info = item->Get<HistoryMessageFactcheck>()) {
+				const auto country = info->data.country;
+				factcheck->hint.link = AboutFactcheckClickHandler(country);
+			}
+		} else if (_data->document
 			&& (_data->document->isWallPaper()
 				|| _data->document->isTheme())) {
 			_openl = std::make_shared<DocumentWrappedClickHandler>(
 				std::move(_openl),
 				_data->document,
 				_parent->data()->fullId());
-		}
-		if (_sponsoredData) {
-			_openl = SponsoredLink(
-				_data->url,
-				_sponsoredData->isLinkInternal);
-
-			if (_sponsoredData->canReport) {
-				_sponsoredData->hintLink = AboutSponsoredClickHandler();
-			}
+		} else {
+			_openl = _data->iv
+				? IvClickHandler(_data, original)
+				: (previewOfHiddenUrl || UrlClickHandler::IsSuspicious(
+					_data->url))
+				? std::make_shared<HiddenUrlClickHandler>(_data->url)
+				: std::make_shared<UrlClickHandler>(_data->url, true);
 		}
 	}
 
@@ -456,7 +500,12 @@ QSize WebPage::countOptimalSize() {
 
 	const auto siteNameHeight = _siteName.isEmpty() ? 0 : lineHeight;
 	const auto titleMinHeight = _title.isEmpty() ? 0 : lineHeight;
-	const auto descMaxLines = isLogEntryOriginal()
+	const auto factcheckMetrics = factcheck
+		? computeFactcheckMetrics(_description.minHeight())
+		: FactcheckMetrics();
+	const auto descMaxLines = factcheck
+		? factcheckMetrics.lines
+		: isLogEntryOriginal()
 		? kMaxOriginalEntryLines
 		: (3 + (siteNameHeight ? 0 : 1) + (titleMinHeight ? 0 : 1));
 	const auto descriptionMinHeight = _description.isEmpty()
@@ -517,15 +566,16 @@ QSize WebPage::countOptimalSize() {
 	if (_asArticle) {
 		minHeight = resizeGetHeight(maxWidth);
 	}
-	if (_sponsoredData && _sponsoredData->canReport) {
-		_sponsoredData->widthBeforeHint
-			= st::webPageTitleStyle.font->width(siteName);
+	if (const auto hint = hintData()) {
+		hint->widthBefore = st::webPageTitleStyle.font->width(siteName);
 		const auto &font = st::webPageSponsoredHintFont;
-		_sponsoredData->hintSize = QSize(
-			font->width(tr::lng_sponsored_message_revenue_button(tr::now))
-				+ font->height,
+		hint->text = sponsored
+			? tr::lng_sponsored_message_revenue_button(tr::now)
+			: tr::lng_factcheck_whats_this(tr::now);
+		hint->size = QSize(
+			font->width(hint->text) + font->height,
 			font->height);
-		maxWidth += _sponsoredData->hintSize.width();
+		maxWidth += hint->size.width();
 	}
 	return { maxWidth, minHeight };
 }
@@ -539,9 +589,22 @@ QSize WebPage::countCurrentSize(int newWidth) {
 	const auto innerWidth = newWidth - rect::m::sum::h(padding);
 	auto newHeight = 0;
 
-	const auto specialRightPix = (_sponsoredData || _stickerSet);
+	const auto stickerSet = stickerSetData();
+	const auto factcheck = factcheckData();
+	const auto specialRightPix = (sponsoredData() || stickerSet);
 	const auto lineHeight = UnitedLineHeight();
-	const auto linesMax = (specialRightPix || isLogEntryOriginal())
+	const auto factcheckMetrics = factcheck
+		? computeFactcheckMetrics(_description.countHeight(innerWidth))
+		: FactcheckMetrics();
+	if (factcheck) {
+		factcheck->expandable = factcheckMetrics.expandable;
+		_openl = factcheck->expandable
+			? ToggleFactcheckClickHandler(_parent)
+			: nullptr;
+	}
+	const auto linesMax = factcheck
+		? (factcheckMetrics.lines + 1)
+		: (specialRightPix || isLogEntryOriginal())
 		? kMaxOriginalEntryLines
 		: 5;
 	const auto siteNameHeight = _siteNameLines ? lineHeight : 0;
@@ -550,7 +613,7 @@ QSize WebPage::countCurrentSize(int newWidth) {
 	if (asArticle() || specialRightPix) {
 		constexpr auto kSponsoredUserpicLines = 2;
 		_pixh = lineHeight
-			* (_stickerSet
+			* (stickerSet
 				? kStickerSetLines
 				: specialRightPix
 				? kSponsoredUserpicLines
@@ -673,8 +736,14 @@ void WebPage::ensurePhotoMediaCreated() const {
 }
 
 bool WebPage::hasHeavyPart() const {
+	if (const auto stickerSet = stickerSetData()) {
+		for (const auto &part : stickerSet->views) {
+			if (part->hasHeavyPart()) {
+				return true;
+			}
+		}
+	}
 	return _photoMedia
-		|| (_stickerSet)
 		|| (_attach ? _attach->hasHeavyPart() : false);
 }
 
@@ -684,6 +753,11 @@ void WebPage::unloadHeavyPart() {
 	}
 	_description.unloadPersistentAnimation();
 	_photoMedia = nullptr;
+	if (const auto stickerSet = stickerSetData()) {
+		for (const auto &part : stickerSet->views) {
+			part->unloadHeavyPart();
+		}
+	}
 }
 
 void WebPage::draw(Painter &p, const PaintContext &context) const {
@@ -704,22 +778,22 @@ void WebPage::draw(Painter &p, const PaintContext &context) const {
 	auto tshift = inner.top();
 	auto paintw = inner.width();
 
-	const auto asSponsored = (!!_sponsoredData);
+	const auto sponsored = sponsoredData();
 
 	const auto selected = context.selected();
 	const auto view = parent();
 	const auto from = view->data()->contentColorsFrom();
-	const auto colorIndex = (asSponsored && _sponsoredData->colorIndex)
-		? _sponsoredData->colorIndex
+	const auto colorIndex = (sponsored && sponsored->colorIndex)
+		? sponsored->colorIndex
 		: from
 		? from->colorIndex()
 		: view->colorIndex();
 	const auto cache = context.outbg
 		? stm->replyCache[st->colorPatternIndex(colorIndex)].get()
 		: st->coloredReplyCache(selected, colorIndex).get();
-	const auto backgroundEmojiId = (asSponsored
-			&& _sponsoredData->backgroundEmojiId)
-		? _sponsoredData->backgroundEmojiId
+	const auto backgroundEmojiId = (sponsored
+		&& sponsored->backgroundEmojiId)
+		? sponsored->backgroundEmojiId
 		: from
 		? from->backgroundEmojiId()
 		: DocumentId();
@@ -755,8 +829,8 @@ void WebPage::draw(Painter &p, const PaintContext &context) const {
 	}
 
 	auto lineHeight = UnitedLineHeight();
-	if (_stickerSet) {
-		const auto viewsCount = _stickerSet->views.size();
+	if (const auto stickerSet = stickerSetData()) {
+		const auto viewsCount = stickerSet->views.size();
 		const auto box = _pixh;
 		const auto topLeft = QPoint(inner.left() + paintw - box, tshift);
 		const auto side = std::ceil(std::sqrt(viewsCount));
@@ -767,7 +841,7 @@ void WebPage::draw(Painter &p, const PaintContext &context) const {
 				if (viewsCount <= index) {
 					break;
 				}
-				const auto &view = _stickerSet->views[index];
+				const auto &view = stickerSet->views[index];
 				const auto size = view->countOptimalSize();
 				const auto offsetX = (single - size.width()) / 2.;
 				const auto offsetY = (single - size.height()) / 2.;
@@ -822,7 +896,7 @@ void WebPage::draw(Painter &p, const PaintContext &context) const {
 				st->msgSelectOverlay(),
 				st->msgSelectOverlayCorners(Ui::CachedCornerRadius::Small));
 		}
-		if (!asSponsored) {
+		if (!sponsored) {
 			// Ignore photo width in sponsored messages,
 			// as its width only affects the title.
 			paintw -= pw + st::webPagePhotoDelta;
@@ -850,35 +924,31 @@ void WebPage::draw(Painter &p, const PaintContext &context) const {
 			endskip,
 			false,
 			context.selection);
-		if (asSponsored
-			&& _sponsoredData->canReport
-			&& (paintw >
-					_sponsoredData->widthBeforeHint
-						+ _sponsoredData->hintSize.width())) {
-			if (_sponsoredData->hintRipple) {
-				_sponsoredData->hintRipple->paint(
-					p,
-					_sponsoredData->lastHintPos.x(),
-					_sponsoredData->lastHintPos.y(),
-					width(),
-					&cache->bg);
-				if (_sponsoredData->hintRipple->empty()) {
-					_sponsoredData->hintRipple = nullptr;
-				}
-			}
-
+		const auto hint = hintData();
+		if (hint && (paintw > hint->widthBefore + hint->size.width())) {
 			auto color = cache->icon;
 			color.setAlphaF(color.alphaF() * 0.15);
 
 			const auto height = st::webPageSponsoredHintFont->height;
 			const auto radius = height / 2;
 
-			_sponsoredData->lastHintPos = QPointF(
-				radius + inner.left() + _sponsoredData->widthBeforeHint,
+			hint->lastPosition = QPointF(
+				radius + inner.left() + hint->widthBefore,
 				tshift + (_siteName.style()->font->height - height) / 2.);
-			const auto rect = QRectF(
-				_sponsoredData->lastHintPos,
-				_sponsoredData->hintSize);
+
+			if (hint->ripple) {
+				hint->ripple->paint(
+					p,
+					hint->lastPosition.x(),
+					hint->lastPosition.y(),
+					width(),
+					&cache->bg);
+				if (hint->ripple->empty()) {
+					hint->ripple = nullptr;
+				}
+			}
+
+			const auto rect = QRectF(hint->lastPosition, hint->size);
 			auto hq = PainterHighQualityEnabler(p);
 			p.setPen(Qt::NoPen);
 			p.setBrush(color);
@@ -887,10 +957,7 @@ void WebPage::draw(Painter &p, const PaintContext &context) const {
 			p.setPen(cache->icon);
 			p.setBrush(Qt::NoBrush);
 			p.setFont(st::webPageSponsoredHintFont);
-			p.drawText(
-				rect,
-				tr::lng_sponsored_message_revenue_button(tr::now),
-				style::al_center);
+			p.drawText(rect, hint->text, style::al_center);
 		}
 		tshift += lineHeight;
 
@@ -901,7 +968,7 @@ void WebPage::draw(Painter &p, const PaintContext &context) const {
 		const auto endskip = _title.hasSkipBlock()
 			? _parent->skipBlockWidth()
 			: 0;
-		const auto titleWidth = asSponsored
+		const auto titleWidth = sponsored
 			? (paintw - _pixh - st::webPagePhotoDelta)
 			: paintw;
 		_title.drawLeftElided(
@@ -1051,16 +1118,38 @@ bool WebPage::asArticle() const {
 	return _asArticle && (_data->photo != nullptr);
 }
 
+WebPage::StickerSetData *WebPage::stickerSetData() const {
+	return std::get_if<StickerSetData>(_additionalData.get());
+}
+
+WebPage::SponsoredData *WebPage::sponsoredData() const {
+	return std::get_if<SponsoredData>(_additionalData.get());
+}
+
+WebPage::FactcheckData *WebPage::factcheckData() const {
+	return std::get_if<FactcheckData>(_additionalData.get());
+}
+
+WebPage::HintData *WebPage::hintData() const {
+	if (const auto sponsored = sponsoredData()) {
+		return sponsored->hint.link ? &sponsored->hint : nullptr;
+	} else if (const auto factcheck = factcheckData()) {
+		return factcheck->hint.link ? &factcheck->hint : nullptr;
+	}
+	return nullptr;
+}
+
 TextState WebPage::textState(QPoint point, StateRequest request) const {
 	auto result = TextState(_parent);
 
 	if (width() < rect::m::sum::h(st::msgPadding) + 1) {
 		return result;
 	}
+	const auto sponsored = sponsoredData();
 	const auto bubble = _attach ? _attach->bubbleMargins() : QMargins();
 	const auto full = Rect(currentSize());
 	auto outer = full - inBubblePadding();
-	if (_sponsoredData) {
+	if (sponsored) {
 		outer.translate(0, st::msgDateFont->height);
 	}
 	const auto inner = outer - innerMargin();
@@ -1175,16 +1264,15 @@ TextState WebPage::textState(QPoint point, StateRequest request) const {
 			}
 		}
 	}
-	if ((!result.link || _sponsoredData) && outer.contains(point)) {
+	if ((!result.link || sponsored) && outer.contains(point)) {
 		result.link = _openl;
 	}
-	if (_sponsoredData && _sponsoredData->canReport) {
-		const auto contains = QRectF(
-			_sponsoredData->lastHintPos,
-			_sponsoredData->hintSize).contains(point
-				- QPoint(0, st::msgDateFont->height));
-		if (contains) {
-			result.link = _sponsoredData->hintLink;
+	if (const auto hint = hintData()) {
+		const auto check = point
+			- QPoint(0, sponsored ? st::msgDateFont->height : 0);
+		const auto hintRect = QRectF(hint->lastPosition, hint->size);
+		if (hintRect.contains(check)) {
+			result.link = hint->link;
 		}
 	}
 	_lastPoint = point - outer.topLeft();
@@ -1256,25 +1344,25 @@ void WebPage::clickHandlerActiveChanged(
 void WebPage::clickHandlerPressedChanged(
 		const ClickHandlerPtr &p,
 		bool pressed) {
-	if (_sponsoredData && _sponsoredData->hintLink == p) {
+	const auto hint = hintData();
+	if (hint && hint->link == p) {
 		if (pressed) {
-			if (!_sponsoredData->hintRipple) {
+			if (!hint->ripple) {
 				const auto owner = &parent()->history()->owner();
-				auto ripple = std::make_unique<Ui::RippleAnimation>(
+				hint->ripple = std::make_unique<Ui::RippleAnimation>(
 					st::defaultRippleAnimation,
 					Ui::RippleAnimation::RoundRectMask(
-						_sponsoredData->hintSize,
+						hint->size,
 						_st.radius),
 					[=] { owner->requestViewRepaint(parent()); });
-				_sponsoredData->hintRipple = std::move(ripple);
 			}
 			const auto full = Rect(currentSize());
 			const auto outer = full - inBubblePadding();
-			_sponsoredData->hintRipple->add(_lastPoint
+			hint->ripple->add(_lastPoint
 				+ outer.topLeft()
-				- _sponsoredData->lastHintPos.toPoint());
-		} else if (_sponsoredData->hintRipple) {
-			_sponsoredData->hintRipple->lastStop();
+				- hint->lastPosition.toPoint());
+		} else if (hint->ripple) {
+			hint->ripple->lastStop();
 		}
 		return;
 	}
@@ -1387,6 +1475,19 @@ bool WebPage::isLogEntryOriginal() const {
 	return _parent->data()->isAdminLogEntry() && _parent->media() != this;
 }
 
+WebPage::FactcheckMetrics WebPage::computeFactcheckMetrics(
+		int fullHeight) const {
+	const auto possible = fullHeight / st::normalFont->height;
+	const auto expandable = (possible > kFactcheckCollapsedLines + 1);
+	const auto check = _parent->Get<Factcheck>();
+	const auto expanded = check && check->expanded;
+	const auto allowExpanding = (expanded || !expandable);
+	return {
+		.lines = allowExpanding ? possible : kFactcheckCollapsedLines,
+		.expandable = expandable,
+	};
+}
+
 int WebPage::bottomInfoPadding() const {
 	if (!isBubbleBottom()) {
 		return 0;
diff --git a/Telegram/SourceFiles/history/view/media/history_view_web_page.h b/Telegram/SourceFiles/history/view/media/history_view_web_page.h
index 86f7ec817..47cba266c 100644
--- a/Telegram/SourceFiles/history/view/media/history_view_web_page.h
+++ b/Telegram/SourceFiles/history/view/media/history_view_web_page.h
@@ -101,6 +101,40 @@ public:
 	~WebPage();
 
 private:
+	struct FactcheckMetrics {
+		int lines = 0;
+		bool expandable = false;
+	};
+	struct HintData {
+		QSize size;
+		QPointF lastPosition;
+		QString text;
+		int widthBefore = 0;
+		std::unique_ptr<Ui::RippleAnimation> ripple;
+		ClickHandlerPtr link;
+	};
+	struct StickerSetData {
+		std::vector<std::unique_ptr<Sticker>> views;
+	};
+	struct SponsoredData {
+		QString buttonText;
+
+		uint64 backgroundEmojiId = 0;
+		uint8 colorIndex : 6 = 0;
+		uint8 isLinkInternal : 1 = 0;
+		uint8 canReport : 1 = 0;
+
+		HintData hint;
+	};
+	struct FactcheckData {
+		HintData hint;
+		bool expandable = false;
+	};
+	using AdditionalData = std::variant<
+		StickerSetData,
+		SponsoredData,
+		FactcheckData>;
+
 	void playAnimation(bool autoplay) override;
 	QSize countOptimalSize() override;
 	QSize countCurrentSize(int newWidth) override;
@@ -124,36 +158,26 @@ private:
 		const ClickHandlerPtr &link) const;
 	[[nodiscard]] bool asArticle() const;
 
+	[[nodiscard]] StickerSetData *stickerSetData() const;
+	[[nodiscard]] SponsoredData *sponsoredData() const;
+	[[nodiscard]] FactcheckData *factcheckData() const;
+	[[nodiscard]] HintData *hintData() const;
+
+	[[nodiscard]] FactcheckMetrics computeFactcheckMetrics(
+		int fullHeight) const;
+
+	void setupAdditionalData();
+
 	const style::QuoteStyle &_st;
 	const not_null<WebPageData*> _data;
+	const MediaWebPageFlags _flags;
+
 	std::vector<std::unique_ptr<Data::Media>> _collage;
 	ClickHandlerPtr _openl;
 	std::unique_ptr<Media> _attach;
 	mutable std::shared_ptr<Data::PhotoMedia> _photoMedia;
 	mutable std::unique_ptr<Ui::RippleAnimation> _ripple;
 
-	struct StickerSet final {
-		std::vector<std::unique_ptr<Sticker>> views;
-	};
-
-	std::unique_ptr<StickerSet> _stickerSet;
-
-	struct SponsoredData final {
-		QString buttonText;
-		bool isLinkInternal = false;
-
-		uint64 backgroundEmojiId = 0;
-		uint8 colorIndex : 6 = 0;
-
-		bool canReport = false;
-		QSize hintSize;
-		QPointF lastHintPos;
-		int widthBeforeHint = 0;
-		std::unique_ptr<Ui::RippleAnimation> hintRipple;
-		ClickHandlerPtr hintLink;
-	};
-	mutable std::optional<SponsoredData> _sponsoredData;
-
 	int _dataVersion = -1;
 	int _siteNameLines = 0;
 	int _descriptionLines = 0;
@@ -172,7 +196,7 @@ private:
 	int _pixw = 0;
 	int _pixh = 0;
 
-	const MediaWebPageFlags _flags;
+	std::unique_ptr<AdditionalData> _additionalData;
 
 };