35 free online tools — no signup, no ads, no tracking. Everything runs in your browser. Nothing is uploaded to any server.
Word Counter — characters, words, sentences, reading time as you type.
Case Converter — UPPER, lower, Title, camelCase, snake_case, and more.
Lorem Ipsum Generator — placeholder paragraphs for layouts.
Text Diff Checker — compare two texts side by side, see what changed.
JSON Formatter — beautify, minify, validate with clear error messages.
Markdown Preview Editor — write Markdown, see live rendered preview.
Regex Tester & Debugger — test patterns with match highlighting and group capture.
Protobuf Decoder — decode binary protobuf data into a readable tree.
Base64 Encode / Decode — full UTF-8 support.
URL Encoder & Decoder — percent-encoding for international characters.
Binary Decimal Hex Converter — convert between bases instantly.
Rot13 & Caesar Cipher — encode and decode with custom shift.
Environment Variable Diff — compare .env files side by side.
URL Debugger — paste a URL, see it broken down, params parsed, issues flagged.
Request Converter — get the same HTTP request in Fetch, Axios, and cURL.
CSS Flex/Grid Playground — tweak layout properties, see changes live.
JS Object Explorer — paste a JS object, browse as a collapsible tree.
Color Converter — HEX, RGB, HSL with live swatch and color picker.
Color Contrast Checker — check WCAG AA/AAA contrast between two colors.
CSS Minifier — strip whitespace and comments, shrink your stylesheets.
CSV to JSON Converter — handles quoted fields and edge cases.
JSON to CSV Converter — flattens nested objects and arrays.
Unit Converter — length, weight, temperature.
Timestamp Converter — Unix to date and back, auto-detects seconds vs milliseconds.
UUID Generator — RFC 4122 v4, crypto RNG.
QR Code Generator — custom size, colors, error correction. Download PNG or SVG.
Cron Expression Generator — dropdowns with next 5 run times.
.gitignore Generator — pick languages and frameworks, combine into one file.
Password Generator — strong random passwords, secure crypto RNG.
Hash Generator — MD5, SHA-1, SHA-256, SHA-512.
HMAC Generator — HMAC-SHA256 and HMAC-SHA512 signatures.
JWT Decoder — see header, payload, expiration instantly.
Token Counter — estimate tokens for GPT, Claude, Gemini models.
Codebase Context Packer — turn a folder into a Markdown blob for AI prompts.
AI Prompt Cost Calculator — see how much a prompt costs across GPT-5.6, Claude Opus 5, Sonnet 5 and Kimi K3.
No account. No API keys. No rate limits. Open a page and it works.
Most "free" online tools are cluttered with ads, popups, and trackers. Boring Tools does one thing: gives you a fast, clean tool and gets out of your way. Everything runs client-side — your data never touches a server.
Built with vanilla HTML, CSS, and JavaScript. No frameworks. No build step. No dependencies.
Boring Tools — the boring choice that just works.