Every tool an author needs, free.
Count words, check grammar, dodge plagiarism, humanize AI drafts, name your book, price your printing, outline your plot — and while the big AI tools fill with ads, this one stays 100% ad-free. publish with Harmony when you're ready.
All tools
Pick a tool and start — no account, no waiting.
Word Counter
Count words, characters, sentences, and reading time as you type.
Open tool →AI Text Humanizer
Rewrite AI-sounding text so it reads like a person wrote it.
Open tool →Book Title Generator
Generate ten book title ideas from your genre and theme.
Open tool →Book Description Generator
Turn your summary into a back-cover-ready book description.
Open tool →Slug Generator
Convert any title into a clean, SEO-friendly URL slug.
Open tool →Schema Generator
Generate schema.org JSON-LD with Wikipedia-linked entities for any page.
Open tool →Meta Tag Generator
Build copy-paste meta and Open Graph tags for any page.
Open tool →Grammar Checker
Fix grammar, spelling, and punctuation in any draft.
Open tool →Plagiarism Checker
Lite originality check that flags common and copied phrases.
Open tool →Readability Checker
Flesch reading ease score and grade level for your writing.
Open tool →KDP Royalty Calculator
Estimate Kindle Direct Publishing royalties per format.
Open tool →Book Printing Cost Calculator
Estimate print costs by pages, trim size, and quantity.
Open tool →Character Name Generator
Generate character names by style, genre, and gender.
Open tool →Writing Prompt Generator
Fresh story ideas and writing prompts by genre.
Open tool →Story Idea Generator
Vivid story ideas with built-in conflict, by genre.
Open tool →Book Plot Generator
Three-act novel outline: premise, setup, confrontation, resolution.
Open tool →Author Bio Generator
A polished author bio for your cover, Amazon page, or media kit.
Open tool →Query Letter Generator
A literary agent query letter from your title and hook.
Open tool →Book Cover Maker
Design a simple book cover mockup in your browser and download it.
Open tool →SEO Content Grader
Grade any draft for SEO: score, A+ to F grade, missing terms, structure notes.
Open tool →SEO Brief Generator
Turn any topic into a writing brief: titles, H2 outline, terms, word target.
Open tool →AI Detector
Estimate whether text reads AI-generated, with reasons and tell-tale phrases.
Open tool →BookBlurb — AI Book Description Generator
Turn your manuscript into a blurb that actually sells. AI readability scoring, keyword suggestions, unlimited optimizations — included in Tools Pro.
Open BookBlurb →Try it now
"A gripping debut about a lighthouse keeper who finds letters from the future…"
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