26 free SEO and content tools for marketers, students, and writers: E-E-A-T analysis, AI detection, readability, grammar, converters and utilities. No signup, no usage limits.
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 32 signals: E-E-A-T gaps, thin content, missing schema, Helpful Content Update compliance, and AI writing patterns.
Scan My Page →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.
Analyze Free →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 Readability →Check your meta title and description for character length, pixel width, keyword placement, and click-through potential. Includes a live Google SERP preview.
Analyze Meta Tags →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.
Detect AI Content →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.
Count Words →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.
Check Density →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 Clarity →Check grammar, spelling, punctuation, and style in one click. One-click fix suggestions for every issue found. Supports 20+ languages.
Check Grammar →Rewrite any text in standard, formal, simple, or creative tone. Ideal for varying sentence structure, refreshing stale copy, and avoiding unintentional repetition.
Paraphrase Text →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.
Summarize Text →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.
Humanize Text →Detect every passive sentence — passive percentage, count, and good/moderate/high rating — then get auto-suggested active rewrites. Edit each suggestion, apply all in one click, and copy the corrected text. Runs in your browser.
Remove Passive Voice →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.
Generate Citations →Get structured AI feedback on thesis strength, evidence quality, argument structure, and clarity. Receive a grade estimate, key strengths, and specific improvements.
Get Feedback →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 to HTML →Convert HTML to clean Markdown instantly. Handles headings, bold, italic, links, images, tables, code blocks, and blockquotes. Free, no signup.
Convert to Markdown →Convert Markdown to a real Word .docx or PDF. Paste Markdown from ChatGPT or Claude, edit the live preview, then export. Headings, tables, code, and lists preserved.
Convert to Word →Convert HTML to BBCode for phpBB, vBulletin, XenForo, and Reddit. Handles bold, italic, links, images, lists, quotes, and code blocks.
Convert to BBCode →Generate styled HTML, Markdown, and BBCode blockquotes with author attribution. 4 styles with live preview: classic, modern, minimal, academic.
Generate Blockquote →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.
Convert Case →Detect filler words and weak phrases that dilute your writing. Highlights every instance with suggestions to tighten your copy.
Check Filler Words →Check punctuation in your text: missing commas, double spaces, unclosed quotes, and common punctuation errors. Runs in your browser.
Check Punctuation →Repeat any text, word, or phrase a set number of times with a custom separator. Useful for testing, data generation, and formatting.
Repeat Text →Free online notepad with auto-save to browser storage. No account, no sync: just a fast distraction-free text editor that saves locally.
Open Notepad →Measure your typing speed in WPM and accuracy. Multiple test durations. Tracks your best score and shows errors in real time.
Test Typing Speed →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 is free; Pro unlocks the full issue list.