Write clearer with free writing analysis
Instant feedback on grammar, readability, tone, and SEO. Paste any text and get 12+ writing metrics in under a second. No signup, no limits — analysis runs in your browser.
Trusted by writers, marketers, and educators worldwide
Everything you need to write better
Six analysis engines work simultaneously — grammar, readability, vocabulary, tone, SEO, and statistics — all in your browser, instantly.
Grammar & spelling
Detect errors, awkward phrasing, and style issues with suggestions powered by the LanguageTool open-source engine.
5 readability scores
Flesch Reading Ease, Flesch-Kincaid, SMOG, Coleman-Liau, and Dale-Chall — all calculated simultaneously with grade-level interpretation.
Tone & sentiment
Detect formality (academic / professional / casual) and emotional sentiment. Match your tone to your audience.
SEO content score
Keyword density, content length, semantic completeness, and readability scored against SERP averages for your target query.
Vocabulary analysis
Unique word count, lexical diversity, complex words, longest sentences, and most-used phrases — all surfaced instantly.
Reading & speaking time
Estimate how long it takes to read silently or speak aloud — calibrated by text complexity, not just word count.
Three clicks. One second. Twelve metrics.
No accounts, no installs, no waiting. Your text never leaves your browser.
Paste your text
Drop any text into the editor — a sentence, paragraph, blog post, or full article. Up to 50,000 characters per analysis.
Click analyze
All five readability formulas, grammar engine, tone detection, and SEO scoring run in parallel — typically under 800ms.
Improve and iterate
Get actionable suggestions for each issue. Edit inline, re-analyze, and watch your scores improve in real time.
Whoever takes writing seriously
Writers & authors
Polish manuscripts, posts, and copy with audience-matched tone
Students
Hit the right reading level for essays, theses, assignments
SEO marketers
Optimize content score, keyword density, semantic coverage
Teachers
Check if material matches your students' reading level
Professionals
Make emails, reports, proposals crystal-clear and on-tone
ESL learners
Calibrate complexity, learn from suggestions, build vocabulary
Editors
Quickly audit submitted drafts for readability and consistency
Publishers
Maintain editorial standards across teams and content types
Loved by 50,000+ writers
“Replaced three tools in my workflow. The five-formula readability check is killer for client deliverables — I can finally show data, not just opinions.”
“Use it before every blog post. The grade level metric alone has made my newsletter way more accessible. Open rates up 18% in three months.”
“My students use GrammarBot to self-edit before submitting. Best part: no account needed, so I can recommend it to anyone instantly.”
Frequently asked questions
Start writing clearer today
No signup. No paywall. Just paste your text and get instant, comprehensive feedback in your browser.
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