Proofread and Edit Text with AI: Best Tools

Proofreading with AI splits into two jobs: catching grammar and spelling errors, and improving clarity and readability. The picks below cover a real-time grammar assistant, a combined grammar-plus-rewriting tool, and a readability editor that highlights dense prose.

Best overall

Grammarly

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English Writing Assistant, Grammar Spelling Smart Check

✓It directly targets English grammar, spelling, clarity, and conciseness, which matches proofreading and editing exactly.
✓Its real-time suggestions help clean up text as you work, making it useful for fast iteration on drafts.
✓Tone and formality adjustments are helpful when the goal is not just correctness but smoother, clearer prose.

Paste a sample paragraph into Grammarly and review the grammar, clarity, and tone suggestions.

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Best free path

QuillBot

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Write effortlessly and efficiently with QuillBot's suite of AI tools. Paraphrase, check grammar, analyze tone, improve fluency, and more.

✓It includes grammar, spelling, and style checks alongside paraphrasing, so it can both correct and rephrase text.
✓Sentence and paragraph rewriting is useful when you want clearer wording without changing the meaning.
✓Its multiple tone and style modes can help tailor the edited text to a specific audience or purpose.

Try QuillBot on one draft paragraph and compare the original with its rewritten version.

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Strong alternative

Hemingway Editor

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Hemingway Editor is a focused writing assistant designed to make your prose bold, clear, and easy to read.

✓Its color-coded clarity highlighting makes it easy to spot dense or hard-to-read sentences quickly.
✓Readability metrics and complex sentence simplification tips are useful when you want cleaner, more direct prose.
✓It is especially strong for making blog posts, articles, emails, and reports easier to read.

⚠It is more focused on readability and concision than on broad grammar correction.

Run your text through Hemingway Editor and revise the highlighted sentences for readability.

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How to choose

1.Use a real-time assistant if you want corrections while you write, rather than a separate editing pass afterwards.
2.Choose a tool with rewriting support when the text needs rephrasing for clarity, not just error correction.
3.For readability problems (long, dense sentences), a highlighting editor like Hemingway shows exactly where prose gets hard to read.
4.Check where you write: browser extensions and document integrations matter more for daily use than raw correction quality.
5.Free tiers cover most casual proofreading; paid plans mainly add advanced clarity, tone, and vocabulary suggestions.

FAQ

Which tool catches the most grammar errors?

Grammarly is the strongest general proofreader: real-time grammar, spelling, clarity, and conciseness suggestions that work across browsers and documents.

What if I need to rewrite sentences, not just fix them?

QuillBot combines grammar checking with sentence and paragraph rewriting, so you can correct errors and rephrase awkward passages in the same tool.

How is Hemingway Editor different?

Hemingway focuses on readability rather than grammar: it color-codes dense sentences, passive voice, and complex phrasing so you can simplify prose. Use it after grammar checking for a clearer final draft.

Do I need a paid plan to proofread well?

For basic grammar and spelling, free tiers of Grammarly and QuillBot are enough. Paid plans mainly add deeper clarity rewrites, tone adjustment, and vocabulary suggestions for professional writing.