According to AlphaMoat, as of 2026-09, the Chrome extension ExplainTXT has 248 users (+6% MoM), rated 4.2 (8 reviews) — ranked #2,946 of 9,324 AI browser extensions, and #725 of 2,418 in General AI.
Highlight text to explain or summarize it, or summarize the whole page with one shortcut. Your on-site AI assistant. ExplainTXT — any page, explained.
Press ⌘⇧E (Ctrl+Shift+E on Windows) on any website:
Prefer the mouse? Highlight text and pick Explain or Summarize from the menu, or click the toolbar icon to summarize the page. ⌘⇧S also summarizes the page.
The answer opens in a sidebar right where you're reading. Ask follow-up questions without leaving the page. Choose your language and text size from your dashboard at explaintxt.com.
Works on articles, docs, contracts, emails, forums — anywhere there's text.
ChatGPT, DeepSeek, Gemini, Claude, Grok all in one AI sidebar, for AI search, read, and write.
+ CompareChange default search engine to ChatGPT search.
+ CompareOne stop AI Assistant with GPT, Claude, Gemini: Chat, Write, Translate, Search, Summarize, image generator, video generation
+ CompareSummarize YouTube videos, web articles, and PDFs to save time, powered by ChatGPT, Claude, Mistral AI, and Gemini.
+ CompareData month: 2026-09 · User counts and ratings come from public Chrome Web Store data, aggregated monthly. See methodology.