Free Writing Tools for Fiction Authors
Polish a draft before you publish, or use these tools while you write books free with AI on Entangled Text. 48 browser tools for manuscript checks, planning, and Kindle/KDP formatting. No login on most tools — paste a chapter, get a report, keep working.
A free AI novel writer is only half the job — you also need to remove AI sameness before KDP. This hub is that second half. Start with Manuscript Cleanup for filter words, adverbs, and passive voice; then use blurb, cover, and Kindle formatter tools when the prose is ready. Pair any tool with Story Studio when you want outline → chapters → export in one project.
From Entangled Text — free AI novel writer and book studio. Analyzers and formatters run in your browser; optional AI tools and signed-in history send only what’s needed for that feature.
Manuscript Cleanup Report
Paste a chapter — get a ranked cleanup checklist for filter words, adverbs, passive voice, clichés, readability, and more. Runs in your browser.
No tools match your search. Try “filter”, “chapter”, or “KDP”.
Manuscript Analysis
AI Writing Detector for Fiction & Websites
Free AI writing detector for fiction and webpages: flag novel AI tells, scan a chapter URL, and get optional DeepSeek rewrite tips. Craft risk — not a binary % AI score.
UpdatedStory X-ray
Paste a manuscript and see what it contains: the cast and who fades out, point of view and tense by chapter, contradictions between chapters, repeated phrasing, Story Health, how the prose sounds — and what will break by chapter 20. No AI call.
Manuscript Cleanup Report
Diagnostic prose report (not an auto-rewrite): filter words, adverbs, passive voice, dialogue tags, readability, and show-don't-tell — with a priority list of what to fix first.
Sentence Rhythm Report
Chart sentence length variety and catch monotonous AI pacing before readers tune out.
Opening Hook Checklist
Score your first ~250 words for character, tension, filter words, and lore dumps.
Dialogue vs Narration Ratio
See dialogue vs narration share — spot talking-head scenes or summary-heavy stretches.
Readability Scores
Flesch ease, grade level, and words/sentence — match prose to YA, thriller, or literary.
Sensory Detail Scanner
Count five-sense cues per 1k words — find white-room scenes and missing senses.
Filter Word Finder
Find crutch words AI prose overuses — very, really, just, suddenly, felt — with category filters, density scoring, and rewrite tips.
Adverb Counter
Count -ly adverbs, highlight top offenders, and see density per 1,000 words.
Passive Voice Scanner
Flag likely passive constructions (was/were + past participle, by the…).
Dialogue Tag Analyzer
Ratio of said/asked vs fancy tags and adverbs attached to speech tags.
Word Frequency Finder
Rank repeated words and phrases to catch AI padding and overused verbs.
Show Don't Tell Hints
Pattern match on emotion labels and telling phrases editors flag in AI drafts.
Cliché & Overused Phrase Finder
Flag tired AI crutches — heart pounded, couldn't help but, icy stare — for fresher rewrites.
Word Echo Finder
Catch the same word repeated within a few sentences — a common AI tic.
Paragraph Length Analyzer
Spot walls of text and one-line paragraphs that hurt pacing on screen.
Redundancy Phrase Finder
Flag tautologies and pleonasms — nodded his head, stood up, shouted loudly, and other padding.
Chapter Ending Hook Checker
Score the last ~120 words of each chapter for cliffhangers, concrete images, and anti-wind-down patterns.
Structure & Planning
Kindle Description Generator
Draft two genre-aware Amazon product descriptions from your title and pitch — powered by Kestrel — Free. Optional cover upload resized to 1600×2560 px in your browser.
NewAI Query Letter Generator
Draft a professional literary agent query letter from your hook, synopsis, comps, and bio — powered by Kestrel — Free.
NewLitRPG Character Sheet Generator
Build a game-system status screen by hand — like Story Studio’s insert block — then export markdown, HTML, PNG, Discord, and more. Optional AI layouts via Kestrel — Free restyle presentation only.
NewAI Character Profile Generator
Turn rough character notes into a story-bible profile with voice, goals, relationships, and continuity flags — powered by Kestrel — Free.
NewAI Character Portrait Generator
Turn a character description into a reference portrait with Grok image — free tier.
NewAI Book Title Generator
Eight marketable title and subtitle ideas from your premise — with Amazon search previews, KDP length checks, and trademark lookup links.
Chapter Word Count Planner
Genre presets → chapter count, words per chapter, and a printable plan.
KDP Page Count Estimator
Estimate print pages from word count and trim size for KDP planning.
Three-Act Beat Sheet
Fillable Save-the-Cat style beat sheet with word-percent targets. Copy or print.
Scene Planning Worksheet
Goal, conflict, outcome, and POV for each scene — stack as many rows as you need.
Back-Cover Blurb Builder
Fill in story slots — get a structured 150-word blurb template (no AI).
Series Bible Template
Character, world, and timeline fields for series continuity. Copy when done.
Character Arc Worksheet
Map want, need, lie, ghost, flaw, and turning points — copy as Markdown for your story bible.
Query Letter Builder
Fill in hook, synopsis, comps, and bio — get a structured agent query draft (no AI).
Title & Subtitle Length
Character counts for Amazon/KDP title and subtitle field limits.
Consistency & QA
AI Chapter Recap Generator
Paste a chapter — get a running \"story so far\" summary and key facts for continuity — powered by Kestrel — Free.
POV Slip Detector
Flag paragraphs that mix first- and third-person pronouns (dialogue excluded).
Manuscript Diff
Compare two pasted versions word-by-word — see what changed between edits.
Character Name Variant Detector
Find similar capitalized names (John/Jon) that may be AI inconsistencies.
Day & Time Reference Extractor
List weekdays, dates, and time phrases for timeline continuity checks.
Proper Noun Extractor
Export a sorted list of capitalized names and places from your manuscript.
Format & Export
AI Book Cover Generator
Generate KDP-ready cover art with Grok Imagine Image 2.0, or upload your own photo. Add title, author, and series with genre typography templates, drag text into place, and download at 1600×2560 px.
UpdatedFree Kindle Book Formatter for Amazon KDP
Format a book for Kindle: convert Word/DOCX, TXT, or Markdown to a KDP-ready EPUB, print PDF, DOCX, and upload ZIP — plus optional AI cover at 1600×2560 px. Free online Kindle formatter.
UpdatedAI Manga Studio
Free AI manga generator and webtoon maker in your browser: panel templates, AI artwork, speech bubbles, book outline, and export to PDF, CBZ, webtoon strips, or EPUB. Try the demo with zero AI tokens.
NewAI Comic Studio
Free AI comic book and web novel studio in your browser: US comic layouts, AI panel art, speech bubbles, chapter outline, and export to PDF, CBZ, vertical strips, or EPUB. Turn prose into comics — try the demo with zero AI tokens.
Smart Quote Normalizer
Straight quotes → curly quotes, dashes, and ellipsis cleanup for submission.
Chapter Heading Formatter
Renumber and normalize "Chapter N" headings across your manuscript.
Plain Text to Markdown Chapters
Split on "Chapter X" lines and output Markdown with H1 headings.
Scene Break Standardizer
Normalize scene breaks to consistent *** or # markers.
Also from Entangled Text
Start your novel
Genre, premise, outline, and your first chapter — guided step by step. Or keep polishing with 48 free browser tools above.
Free account · No credit card · ~3 minutes to your first outline
Frequently asked questions about our writing tools
Are these writing tools really free?
Yes. Browser analyzers and formatters are free with no account required. Optional AI features (covers, manga/comic art, some generators) use a free daily allowance; Pro or Ultra unlocks higher limits.
Is my manuscript uploaded to your servers?
Analyzers and transformers run in your browser. Guests are not asked to upload a novel. If you sign in, optional “My runs” can store a private copy of a scan so you can reopen it — we don’t use drafts to train models. Generative AI tools send only the prompt/text needed for that generation.
Do these tools use AI?
Most analyzers and formatters are rule-based — not generative AI. AI Manga Studio, AI Comic Studio, the book cover generator, and a few Kestrel helpers include optional AI generation; layout, lettering, and export still run in your browser.
What is the best tool to start with?
Try the Manuscript Cleanup Report for a full snapshot (filter words, adverbs, passive voice, readability). Then drill into individual checkers for the metrics that scored highest.
Who are these tools for?
Fiction authors polishing AI-assisted drafts, self-publishers preparing KDP manuscripts, and writers who want quick prose diagnostics before hiring an editor.
Can I use these tools on a full novel?
Yes. Paste a chapter or an entire manuscript. Very large texts may slow your browser slightly. Analysis still happens locally; only optional signed-in history or AI generation sends data for that feature.
How do these compare to Grammarly?
Grammarly targets general grammar. These tools target fiction craft: dialogue tags, show-don't-tell, chapter pacing, KDP metadata, and series continuity — tuned for novelists.
How do these tools fit with write books free with AI?
Draft in Entangled Text Story Studio (or paste any AI draft here), run cleanup and KDP helpers on this hub, then export EPUB/DOCX from Ship or the Kindle formatter. The tools stay free either way.
Machine-readable summary for AI assistants: llms.txt