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. 53 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. AI tools are marked on their cards with their free allowance, and send only what that feature needs.
Generators: turn a story into pages with the AI manga generator or AI comic studio, design a KDP cover with the AI book cover generator, write the Amazon copy with the book description generator or blurb builder, name it with the book title generator, plan it on the beat sheet, and pitch agents with the comp title finder and AI query letter generator.
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”.
Check a draft
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 AI rewrite tips. Craft risk — not a binary % AI score.
Scan: no AI · AI rewrite tips: 8 free per connectionStory 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, nothing stored.
Manuscript Cleanup Report
Diagnostic prose report (not an auto-rewrite): filter words, adverbs, passive voice, telling, clichés, sentence rhythm, dialogue tags and readability — with a cleanup score and 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 opening page against 12 hook checks: a named character, tension, an active first verb, filter words, lore dumps, sensory detail.
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 Finder
Find every -ly adverb, highlight the repeats, 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
Flags emotion labels (felt angry, was nervous), mental verbs and summarised action (told him about…, spent the next hour…), and names the text it scored.
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.
Plan the book
LitRPG Character Sheet Generator
Build a LitRPG status screen by hand, then export Markdown, HTML, PNG, Discord and more. Optional AI layouts restyle the sheet without changing your stats.
Optional AI layouts · small free budget per connection UpdatedCharacter Profile Generator
Turn rough character notes into a story-bible profile with voice, goals, relationships, and continuity flags — powered by Kestrel — Free.
AI · 8 free runs per connection · no cap on Pro/Ultra UpdatedAI Book Title Generator
Eight marketable title and subtitle ideas from your premise — with Amazon search previews, KDP length checks, and trademark lookup links.
AI · 10 free runs per connection · no cap on Pro/UltraChapter Word Count Planner
Genre presets → chapter count, words per chapter, and a printable plan.
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.
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.
Keep it consistent
Plot Hole & Dropped Thread Finder
Finds a sentence that made a promise and whether a later passage kept it. Dropped, paid off, or unclear — each one quoted from your paste.
AI · 6 free runs per connection · no cap on Pro/Ultra UpdatedChapter Recap Generator
Paste a chapter and get a story-so-far recap plus the facts the next chapter has to keep — powered by Kestrel — Free.
AI · 10 free runs per connection · no cap on Pro/UltraPOV 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.
Sell & pitch it
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.
AI · 8 free runs per connection · no cap on Pro/Ultra UpdatedAI Query Letter Generator
Draft a professional literary agent query letter from your hook, synopsis, comps, and bio — powered by Kestrel — Free.
AI · 6 free runs per connection · no cap on Pro/Ultra NewKDP Keyword Generator
Seven Amazon KDP keyword slots written from your manuscript. Each phrase stays under 50 characters, drops title words and banned terms, and explains reader intent. No invented search volume.
AI · 8 free runs per connection · no cap on Pro/Ultra NewAgent Synopsis Generator
A one-page agent synopsis that is allowed to spoil the ending. Chronological, 500–800 words, and only events that are actually in the paste.
AI · 6 free runs per connection · no cap on Pro/Ultra NewComp Title Finder
Comparable titles for a query letter. Each suggestion is checked against Open Library and labeled verified or unverified. Unverified titles are not presented as real books.
AI · 8 free runs per connection · no cap on Pro/Ultra NewTrope & Content Warning Tagger
Tags tropes, content warnings, and spice from a pasted chapter, and quotes the sentence that triggered each tag so you can delete false positives.
AI · 8 free runs per connection · no cap on Pro/UltraKDP Page Count Estimator
Estimate KDP print pages and spine width from word count and trim size.
Back-Cover Blurb Builder
Fill in story slots — get three short blurb drafts to build on, with a word count against the 100–180-word target (no AI).
Query Letter Builder
Fill in hook, synopsis, comps, and bio — get a structured agent query draft (no AI).
KDP Title Character Limit
Amazon title and subtitle character counter against the 200-character KDP limits.
Format & export
Free 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.
Optional AI cover · 3 free images per connectionSmart 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.
Covers, comics & art
AI Book Cover Generator
Generate KDP-ready AI cover art, or upload your own photo. Add title, author, and series with genre typography templates, drag text into place, and download at 1600×2560 px.
AI · 3 free cover images per connection · no cap on Pro/Ultra 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.
AI · 10 free panel images per connection · no cap on Pro/Ultra UpdatedAI 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.
AI · 10 free panel images per connection · no cap on Pro/Ultra UpdatedAI Character Portrait Generator
Turn a character description into an AI reference portrait for your story bible.
AI · 4 free portraits per connection · no cap on Pro/UltraAlso from Entangled Text
Start your novel
Genre, premise, outline, and your first chapter — guided step by step. Or keep polishing with 53 free browser tools above.
Free account · No credit card · Free AI on your own key
Frequently asked questions about our writing tools
Are these writing tools really free?
Yes. The analyzers, formatters and worksheets are free with no account and no cap. The AI helpers have a small free allowance counted per internet connection over time, not per day — 3 AI cover images, 4 character portraits, 10 manga or comic panel images, and 6–10 runs of each text generator. Signing in to a Free account does not raise it (signed-in runs also count toward your Free AI words); Pro and Ultra remove the caps.
How many words a day does the Free plan allow?
Free writes on your own AI key, so there is no daily limit from us: you write as much as your provider account allows, one chapter per press, and pay your provider directly. Pro and Ultra finish every chapter with Claude Opus and can draft the whole book in one go — see the pricing page.
Is my manuscript uploaded to your servers?
Analyzers and transformers run in your browser. Story X-ray reads the text on our server and does not store it. 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 do not: the analyzers, formatters and worksheets are rule-based, and so is Story X-ray. The AI tools are the book cover generator, AI Manga Studio and AI Comic Studio, the character portrait generator, and the text helpers — book description, title, query letter, synopsis, KDP keyword, comp title, content warning, character profile, chapter recap and plot-hole tools. The AI writing detector scans without AI; only its optional rewrite tips use it. Each AI tool shows its free allowance on its card and page.
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