Justdone AI Writing Copyw Chrome Extension
Checks grammar, paraphrases and adjusts tone in real time across Gmail, Docs and more.
At a glance
Starts at
Free
Listed as free on the Chrome Web Store.
Free tier
Yes
Platforms
Chrome
Best for
Students and professionals writing across many web tools
Not for
Anyone writing exclusively in languages outside its 30-plus list
3.7 out of 5
Scored by a Toolio reviewer after real useOur verdict
Justdone checks grammar and spelling across more than 30 languages, and goes beyond basic proofreading with paraphrasing, summarization and tone adjustment, all applied in real time with color-coded suggestions you can accept in one click. It works directly inside Google Docs, Gmail, Outlook, LinkedIn and other sites without any copy-pasting. Coverage depends on which of the 30-plus supported languages you're writing in, so anything outside that list isn't handled the same way.
✓What it does well
Multilingual grammar checkGrammar and spelling errors are caught across more than 30 languages.
Works without copy-pasteSuggestions appear directly inside Gmail, Docs, LinkedIn and other sites.
Tone and clarity adjustmentTone can be adjusted instantly to fit a casual or professional context.
✕Where it falls short
Limited to supported languagesCoverage is limited to the 30-plus languages it explicitly supports.
One more browser extension to runIt requires installing and running yet another writing extension alongside your browser.
Depends on real-time analysisSuggestions depend on real-time text analysis, which can occasionally misread intent.
Key features
Multilingual grammar checkGrammar and spelling get checked live across more than 30 languages.
Advanced paraphrasingSentences rephrase while keeping the original meaning intact.
Fast summarizationLong text condenses into key takeaways in seconds.
Tone controlWriting tone adjusts instantly to match casual or professional contexts.