Other tools just flag problems. We fix them.
Chapterra is your virtual developmental editor and proofreader, offering real, actionable feedback and professional-level revisions that make your manuscript publish-ready.
Upload your manuscript to proofread for FREE — rough drafts or finished manuscripts, in DOCX, EPUB, or TXT.
Upload your manuscript in DOCX, EPUB, or TXT format. Your work stays private — we never store your content.
Proofread for free, or choose copyedit / line edit for deeper polish. Process one chapter or your entire book.
See before/after comparisons, accept or reject changes, then export to DOCX or EPUB.
AI is optional, not inevitable: proofreading uses rules-based corrections, Story Bible & Chat track continuity without changing your story, Beta Read Reports analyse and advise rather than rewrite, and Cowriter is clearly labelled and entirely opt-in. You decide how much AI assistance you want.
Our editing prompts are built on a comprehensive editing guide covering 100+ common writing issues — from filter words to POV slips to pacing problems. This isn't generic AI; it's trained on real editorial expertise from professional developmental editing.
Other tools flag issues. We rewrite sentences while preserving your voice. Handle 90,000+ word manuscripts with chapter-aware processing, and track plot threads, character arcs, stakes, and pacing across your entire book.
From first draft to final polish, Chapterra provides professional-grade editing at every level.
Fix spelling, grammar, punctuation, and basic clarity issues. A rules-based approach preserves your voice.
Improve flow, consistency, and readability. Tighten prose while maintaining your style.
Deep polish for style, tone, and impact. Elevate your prose to professional standards.
Structural feedback on plot, character arcs, pacing, and story logic — plot holes, character consistency, and pacing issues.
Comprehensive analysis: plot structure, character arcs, pacing, emotional journey, and commercial viability, with a chapter-by-chapter breakdown.
Track continuity — characters, plot threads, and world details — across an entire manuscript.
Brainstorm, get unstuck, and plan revisions with a coach that knows your book.