Free Online Proofreader & Grammar Checker

What is Free Online Proofreader & Grammar Checker?

A free online proofreader that catches spelling, grammar, punctuation, and style errors in any English text — and explains every correction so you actually improve. Paste an essay, email, report, or blog post and get a clean corrected version plus a detailed proofreading report in seconds.

Key Features

• Catch every error type: grammar, spelling, punctuation, word choice, and clarity issues in a single pass.
• Learn while you proofread: every change comes with a one-line rule explanation, so you stop repeating the same mistakes.
• Preserve your voice: corrections keep your original meaning and style — no robotic rewrites, no invented content.
• Handle long documents: full essays, articles, and manuscripts are processed section by section, with recurring patterns called out.
• Adjust tone on request: ask for a formal, academic, professional, or casual rewrite and get it instantly.
• Proofread URLs too: share a link and the page's article content is fetched and proofread automatically.

How to Use

1. Paste your text into the chat — a sentence, a paragraph, or a full document.
2. Press send. You'll get the Corrected Version followed by a Proofreading Report listing every change with its rule.
3. Refine if you like: ask for a different tone, a clearer rewrite, or a focus on one error type, and the agent reworks it for you.

Example Use Cases

• Essay proofreading for students: paste a draft college essay and get grammar fixes plus clarity suggestions before you submit.
• Email and report cleanup for professionals: run an important work email through the proofreader to remove typos and awkward phrasing.
• English improvement for non-native speakers: receive simple rule explanations for each correction — faster than a textbook, tailored to your writing.
• Blog post and article editing: clean up a draft article, tighten wordy sentences, and fix punctuation before publishing.
• Cover letter and resume review: polish your application writing so first impressions count.

Tips for Best Results

• Paste the full text in one go — the report gets more useful when the agent can see your recurring patterns.
• Mention the tone you want upfront (e.g., "make this more formal") so corrections fit the register.
• Review the rule explanations, not just the fixes — that's where the learning happens.
• For long documents, let the agent work section by section rather than trimming your text.

FAQ

• How long can my input be? There's no hard character limit. Very long documents are proofread section by section, and you'll be told how many sections remain.
• How accurate are the results? The proofreader is thorough across grammar, spelling, punctuation, word choice, and clarity. Because it respects your original meaning, anything subjective is clearly marked as a suggestion, not an error.
• Can I upload files or URLs? You can share a URL to proofread a published article. For files, paste the text directly for the fastest and most complete result.
• How does this compare to QuillBot's proofreader? QuillBot is a popular online proofreader, but this agent goes further: it explains every single correction in plain English, flags recurring patterns, handles long documents without limits, and lets you adjust tone — all for free, with no word cap and no account required.