- Typo and spelling correction
- Grammar and punctuation
- Sentence clarity, without touching your voice
How proofreading works
Upload your manuscript in DOCX, EPUB, or TXT. Choose to run a single chapter or the entire book. Chapterra returns a clean copy with before-and-after comparisons, and you accept or reject each correction before exporting back to DOCX or EPUB.
Rules-based, not guesswork
Proofreading uses rules-based corrections rather than open-ended AI, so it fixes mistakes instead of reinventing your sentences. Your work stays private and is never stored on our servers.
Frequently asked
Is this just Grammarly for books?
No. Grammarly helps you find mistakes, but it will not actually improve your writing, and you have to approve every single error one at a time, which can take weeks. Chapterra sends your entire book through at once and fixes everything, so you can be confident the manuscript is clean and ready to share.
Is my manuscript private?
Yes. Your manuscript is processed in your browser and sent directly to the AI provider you choose (OpenAI, Anthropic, or Google). Chapterra never stores your content on its servers.
Proofread my book free
Chapterra works on your whole book, one chapter at a time. Try it free.
Proofread my book free