AI proofreader
Proofread the whole manuscript, not one pasted paragraph at a time
Import your book from Word, run a whole-book review with line edits you accept or reject, and spot-check any passage with a grammar checker that keeps errors and style notes apart.
Why general proofreaders struggle with a book
Tools built for emails and essays run into trouble at book length.They only see what you paste
A checker that reads one chunk at a time cannot judge anything that depends on the rest of the book.
They flag voice as error
Fragments used for effect, dialect in dialogue and a narrator's quirks get marked wrong and smoothed away.
They stop at the comma
Correct grammar does not fix a paragraph that says the same thing twice.
Copy and paste breaks the flow
Moving text back and forth between a manuscript and a checker invites lost edits and formatting damage.
How proofreading works here
Two levels: the whole book, and the passage in front of you.Import your manuscript
Upload a Word (.docx) file of up to 200,000 words. Chapters are detected automatically and you check them before import. Importing is free.
Run the review
The whole-book review returns line edits along with an editorial letter, chapter pacing notes and a score, for 15 credits per 1,000 words, once per book.
Accept or reject line by line
Each line edit applies only to the passage it was made for, and only if you accept it.
Spot-check passages
Paste a tricky passage into the grammar checker to see errors and style notes listed separately.
Export clean files
Preflight checks flag problems before you export, whether that is Markdown, DOCX from Plus, or an EPUB and a print-ready PDF on the Pro plan.
Pasting chunks into a checker versus proofreading the book
Both catch typos. They differ in everything around the typo.| Chunk-by-chunk checker | AIBookWriter | |
|---|---|---|
| What it reads | The text you paste | The whole manuscript, imported once |
| Your voice | Often treated as a mistake | Errors and style notes kept apart, so style stays your call |
| Applying changes | Copy corrected text back by hand | Accept or reject each line edit in place |
| Beyond the sentence | Not covered | An editorial letter and pacing notes in the same review |
| Undo | Whatever your word processor keeps | Every accepted edit in version history |
Proofreading tools in one place
Use the whole-book review for the big pass and the standalone tools for anything in between.Grammar checker
Errors and style notes in separate lists, with your voice left alone. 5 credits per 1,000 words after the free runs.
Line edits
Sentence-level changes from the whole-book review, each one accepted or rejected by you.
Originality checker
Flags clichés, stock phrasing and over-familiar passages. It is not a web plagiarism scan.
Word counter
Words, pages, reading time and per-chapter counts, free and unlimited in your browser.
Preflight checks
A last check before export, so formatting problems do not reach readers.
Version history
Each accepted edit is its own version, so one you regret can be rolled back.
What a proofreader should leave alone
Good proofreading is as much about restraint as correction. A book is full of deliberate choices that a rules-based check will flag, and accepting every suggestion can sand the character out of a manuscript.
Before you accept a change, ask whether the original was a choice:
- Dialogue. People speak in fragments, interrupt themselves and use words a style guide would not. A character's dialect is part of who they are.
- Rhythm. A one-word paragraph, a breathless run-on sentence in a panic scene, a repeated phrase that works as a refrain.
- Narrative voice. A first-person narrator who says “gonna” is not making a grammar mistake.
- House style. Serial commas, spelled-out numbers, em dashes with or without spaces. Pick one approach and apply it consistently; neither is wrong.
This is why the grammar checker keeps errors and style notes in separate lists, and why every line edit in the review waits for you. Accept the errors. Treat the style notes as questions.
One last step is still worth doing by hand: read a printed proof, or the exported EPUB on an actual device, before you publish. Some problems only show up on the page.
Free proofreading tools
Grammar Checker
Errors and style notes kept apart, with your voice left alone
2 free runs an hour
Originality Checker
Clichés, stock phrasing and over-familiar passages — not a web scan
2 free runs an hour
Word Counter
Words, pages, reading time and per-chapter counts, in your browser
Free, unlimited, runs in your browser
Paraphrasing Tool
Six rewrite modes, the meaning kept
2 free runs an hour
AI Content Detector
How machine-like a passage reads, and which sentences why
2 free runs an hour
Questions about AI proofreading
Can it proofread a whole novel at once?
Yes. Import the manuscript from Word, up to 200,000 words, and run the whole-book review, which returns line edits along with the editorial letter and pacing notes. The review costs 15 credits per 1,000 words, once per book, and re-running it after you revise is free.
Will it change my style?
Only if you let it. The grammar checker lists errors separately from style notes, and the review's line edits are suggestions you accept or reject one at a time. Nothing is applied to your manuscript automatically, and every save is kept in version history.
Is the grammar checker free?
You can run it twice an hour without an account. After that it costs 5 credits per 1,000 words. Each run accepts up to 15,000 characters, which suits a section of a chapter or a tricky scene rather than a whole book; use the whole-book review for that.
Does it check for plagiarism?
The originality checker looks for clichés, stock phrasing and over-familiar passages in your text. It does not scan the web or compare your book against published works, so it is not a plagiarism detector in the academic sense. It is a tool for making your prose more your own.
Should I still hire a human proofreader?
If your budget allows, a human proofread of the final files is worth it, especially for print. AI proofreading is a repeatable pass you can run after every revision; a human catches what context and taste reveal. The two work well in sequence: AI during revision, a person on the final proof.
Can it catch formatting problems?
Preflight checks run in the format and export step and flag problems before you create a print-ready PDF or EPUB. The import step also lets you check how chapters were detected before anything comes in, so a broken chapter split is caught at the start rather than at the end.
Clean up the whole book in one pass
Import your manuscript for free, run the review and work through the line edits in place.
Related pages
All use cases- Finish your bookFinish the book you started, without starting over
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