A curated list of the best free online tools that work in your browser — no signup, no installation, no BS.
All tools listed here are 100% free, run in your browser, and require no account creation.
- AI Resume Tailor - ATS-optimized resume builder. Paste resume + job description → get tailored version.
- AI Cover Letter Generator - Personalized cover letters in seconds.
- AI Email Writer - Write or reply to emails in any tone.
- AI Roast Me - Describe yourself, get hilariously roasted by AI.
- AI Fortune Teller - Mystical AI psychic reading.
- AI Pickup Lines - Smooth, funny, or cheesy lines for any situation.
- AI Personality Quiz - AI-generated unique personality type.
- AI Dream Interpreter - Decode your dreams with AI.
- AI Rizz Rater - Rate your pickup lines 0-100.
- AI Red Flag Analyzer - Scan texts for dating red flags.
- AI Toxic Trait Revealer - Discover your worst quality.
- AI Survival Simulator - Zombie apocalypse, Mars, medieval plague — how long can you survive?
- AI CEO Simulator - Run a startup without getting fired.
- AI Wikipedia Speedrun - Connect two topics in fewest steps.
- AI Argument Settler - Let AI judge your debate.
- 决战拜年之巅 - Chinese New Year relative battle simulator.
- AI Business Name Generator - Creative brand names instantly.
- AI ELI5 Explainer - Explain anything at 5 difficulty levels.
- Pet Name Generator - AI-powered pet name ideas.
- AI Product Finder - Personalized product recommendations.
- JSON Formatter - Format, validate & beautify JSON
- JSON to CSV - Convert JSON arrays to CSV
- CSV to JSON - Convert CSV to JSON
- JSON to YAML - JSON ↔ YAML converter
- SQL Formatter - Beautify SQL queries
- Markdown Preview - Live Markdown to HTML
- Base64 Encoder - Encode & decode Base64
- URL Encoder - URL encode & decode
- Hash Generator - SHA-256, SHA-512
- HTML Entities - HTML entity encode/decode
- JWT Decoder - Decode JSON Web Tokens
- Text to Binary - Text ↔ binary ↔ hex
- Password Generator - Cryptographically secure passwords
- UUID Generator - Random UUID v4 in bulk
- Lorem Ipsum - Placeholder text
- QR Code Generator - Generate QR codes
- Favicon Generator - Text/emoji to favicon
- Color Converter - HEX, RGB, HSL
- CSS Gradient - Visual gradient builder
- Meta Tag Generator - SEO, OG, Twitter Cards
- Robots.txt Generator - Build robots.txt
- .htaccess Generator - Apache redirect rules
- Regex Tester - Test regex with highlights
- Timestamp Converter - Unix ↔ date
- Chmod Calculator - Unix permissions
- Crontab Generator - Cron expressions
- Number Base Converter - Bin/Oct/Dec/Hex
- Percentage Calculator - Quick math
- HTTP Status Codes - Complete reference
- Screen Resolution - Display & browser info
- Emoji Picker - Search & copy emojis
- Meta Tag Generator - Generate SEO meta tags
- Robots.txt Generator - Control crawler access
- Word Counter - Text statistics for content writers
- Best Robot Vacuums 2026 - Top 5 compared
- Best Air Purifiers 2026 - For allergies & pets
- Best Standing Desks 2026 - For home office
- Best Wireless Earbuds 2026 - ANC picks
- 20+ Product Comparisons - X vs Y head-to-head
- Best MCP Servers 2026 - 70+ curated Model Context Protocol servers
- Best Claude Code Skills 2026 - 60+ curated AI coding skills
Found a great free tool? Open a PR to add it!
