Felo

Free Online AI Proofreader & Punctuation Checker

Paste any text for a free online AI proofread that catches every punctuation slip — missing commas, comma splices, misused semicolons, apostrophe mix-ups, and wrong dashes — plus grammar and spelling fixes. Get a clean corrected version, a punctuation-first report with every rule explained, and AP/Chicago style options in seconds. Try it free →

What is Free Online AI Proofreader & Punctuation Checker?

A free online AI proofreader that finds and fixes every punctuation, grammar, and spelling mistake in your English text — and explains each correction so you stop making it. Whether you're polishing an essay, an email, or a blog post, paste your text and get a clean corrected version plus a punctuation-first report in seconds.

Key Features

Punctuation specialist checking: catches comma splices, missing serial commas, misused semicolons, possessive-vs-contraction apostrophes, and hyphen vs. em-dash errors that generic grammar tools miss.
Every fix explained: each correction comes with a one-line rule explanation, so you learn the grammar instead of just accepting the fix.
Punctuation-only scan mode: run a focused punctuation check with a punctuation score out of 100 whenever you want to review one category at a time.
Style-guide aware: apply AP Style, Chicago, or your Oxford comma preference in a single sentence.
No word limit: proofread long essays, reports, and documents section by section — or paste a URL to check a live page.

How to Use

Paste your text — essay, email, blog post, cover letter, or report — into the chat. You can also share a URL or upload a document.
Optional: tell the agent your style preference (e.g., "Use AP style, no Oxford comma") or ask for a punctuation-only check.
Review the corrected version, read the numbered report, and copy your clean text. Ask for a different tone or another section any time.

Example Use Cases

Essay proofreading: a student pastes a 2,000-word university essay and gets every comma splice and run-on fixed before submission day.
Business email punctuation: a professional cleans up a client email where semicolons and colons were used interchangeably — tone stays intact.
Blog post dialogue: a blogger's draft is full of misplaced quotation marks and broken dialogue paragraphing; every quote gets formatted correctly.
Cover letter apostrophes: a job seeker's draft has it's/its and your/you're mix-ups that spellcheck never caught; each is fixed with a rule note.
URL proofreading: paste a web page link and have the visible article text proofread without copy-pasting anything.

Tips for Best Results

Paste the full text at once — the agent handles long documents section by section and reports progress.
Name your style preference up front ("AP style", "Chicago", "Oxford comma off") for consistent formatting.
Use punctuation-only mode for a focused review before your final grammar pass.

FAQ

How long can my text be?
There's no word limit. Very long documents are proofread section by section, and you'll see a progress note telling you how many sections remain. You can also paste a URL or upload a text-based document.

How accurate are the results?
The agent explains every correction with the rule behind it, so you can verify each fix. It separates hard errors from optional style suggestions and preserves your original voice and meaning — it never silently rewrites your text.

How does Free Online AI Proofreader & Punctuation Checker compare to QuillBot's Online Proofreader?
QuillBot flags errors; this agent teaches. Every fix is explained with the rule, punctuation gets its own specialist pass and a score out of 100, you can apply AP or Chicago style, and there's no word limit — so long documents get proofread instead of truncated.