28 tools for SEO professionals, content marketers, students, and writers. E-E-A-T analysis, AI detection, readability, grammar, converters, utilities, and more — 26 completely free, no signup.
Tools for content marketers, SEO teams, and bloggers to analyze, optimize, and rank.
Will your content survive the next Google algorithm update? Scans any URL across 20+ signals — E-E-A-T gaps, thin content, missing schema, Helpful Content Update compliance, and AI writing patterns.
Score your content across Google's four E-E-A-T dimensions — Experience, Expertise, Authoritativeness, and Trustworthiness. Get an AI-powered rewrite that adds the signals Google rewards.
Get your Flesch Reading Ease score, Flesch-Kincaid grade level, reading time, average sentence length, and suggestions to make your content clearer and more accessible.
Check your meta title and description for character length, pixel width, keyword placement, and click-through potential. Includes a live Google SERP preview.
Detect whether content was written by a human or generated by AI tools like ChatGPT, Claude, or Gemini. 4-signal ensemble — neural classifier, perplexity, burstiness, and n-gram repetition. Paste text or enter a URL.
Count words, characters, sentences, and paragraphs instantly. Also shows reading time, speaking time, unique word count, average sentence length, and top keywords. Updates live as you type.
Check keyword density for any target word or phrase. Shows density percentage, occurrence count, density rating (too low / optimal / too high), and top repeated 2-word and 3-word phrases across your content.
Tools for writers and editors to improve clarity, grammar, and style.
Detect passive voice, overly long sentences, and filler words that weaken your writing. Get a clarity score and specific sentence-level fix suggestions.
Check grammar, spelling, punctuation, and style in one click. One-click fix suggestions for every issue found. Supports 20+ languages.
Rewrite any text in standard, formal, simple, or creative tone. Ideal for varying sentence structure, refreshing stale copy, and avoiding unintentional repetition.
Condense articles, papers, and reports into bullet points, paragraphs, or numbered key takeaways. Choose your format and length — short, medium, or detailed. Up to 15,000 characters.
Polish AI-drafted content into your voice so it reads with the variance, cadence, and Experience signals Google E-E-A-T rewards. Three strengths, with a built-in AI-detection score before and after so you can verify the lift.
Paste any sentence and get 3 rewritten versions instantly. Choose shorter, longer, formal, or simpler mode. Ideal for students, writers, and marketers.
Detect every passive sentence instantly. Shows passive percentage, sentence count, and a good/moderate/high rating. Highlights each flagged sentence with the triggering be-verb. Runs in your browser.
Detect every passive sentence and get auto-suggested active rewrites. Edit each suggestion, apply all rewrites in one click, and copy the corrected text. Runs in your browser.
Tools for students and researchers — citations, essay feedback, and structured writing.
Generate APA 7th, MLA 9th, and Chicago 17th citations from a URL or manual entry in seconds. Free for students, researchers, and academics — no signup required.
Get structured AI feedback on thesis strength, evidence quality, argument structure, and clarity. Receive a grade estimate, key strengths, and specific improvements.
Count words for essays, college applications, and academic papers. Shows word count, character count, and reading time. Tracks limits like the 650-word Common App essay.
Convert and format text between HTML, Markdown, BBCode, and Word.
Paste text from Word or upload a .docx file and get clean, semantic HTML instantly. Detects headings, lists, bold, italic, and links. No mso- junk, no inline styles.
Convert HTML to clean Markdown instantly. Handles headings, bold, italic, links, images, tables, code blocks, and blockquotes. Free, no signup.
Convert HTML to BBCode for phpBB, vBulletin, XenForo, and Reddit. Handles bold, italic, links, images, lists, quotes, and code blocks.
Generate styled HTML, Markdown, and BBCode blockquotes with author attribution. 4 styles with live preview — classic, modern, minimal, academic.
Everyday writing utilities — case conversion, repetition, punctuation, and more.
Convert text to uppercase, lowercase, title case, sentence case, and more. Paste any text and convert in one click.
Detect filler words and weak phrases that dilute your writing. Highlights every instance with suggestions to tighten your copy.
Check punctuation in your text — missing commas, double spaces, unclosed quotes, and common punctuation errors. Runs in your browser.
Repeat any text, word, or phrase a set number of times with a custom separator. Useful for testing, data generation, and formatting.
Free online notepad with auto-save to browser storage. No account, no sync — just a fast distraction-free text editor that saves locally.
Measure your typing speed in WPM and accuracy. Multiple test durations. Tracks your best score and shows errors in real time.
Common questions about Credify's free tools.
No credit card. 26 tools need no signup — AI Humanizer requires a free account (5 uses/day). Penalty Risk Scanner free (Pro unlocks full issue list).
See Pro Features →