Tiny tools for browser emergencies.
177 free utilities, no signup, most running entirely in your browser.
Most popular
View all →Base64 Encoder / Decoder
Encode or decode Base64 strings instantly.
Color Picker & Contrast Checker
Pick colors, convert between HEX/RGB/HSL, and check WCAG contrast.
Hash Generator
Compute SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or a file.
Image Compressor
Shrink JPG, PNG, and WEBP images in your browser — pick the quality and see the savings.
JSON Formatter & Validator
Pretty-print, minify, and validate JSON.
JWT Decoder
Decode and inspect a JSON Web Token's header, payload, and expiry.
Lorem Ipsum Generator
Generate placeholder text by words, sentences, or paragraphs.
Mortgage Calculator
Estimate your monthly PITI — principal, interest, property tax, insurance, and PMI.
Password Generator
Strong, customizable passwords generated with crypto-secure randomness.
Percentage & Ratio Tool
Six modes of percent: X% of Y, what % is X of Y, % change, markup, margin, and ratio simplifier.
QR Code Generator
Generate a QR code from any text or URL. Download as PNG.
Regex Tester
Test JavaScript regular expressions with live match highlighting and capture groups.
Smart Calculator
A calculator that understands expressions, percentages, and unit conversions like '12ft to cm' or '15% of 240'.
Timestamp Converter
Convert between Unix timestamps, ISO dates, and local time.
Word & Character Counter
Count characters, words, sentences, paragraphs, and reading time.
Try a workflow
All workflows →Chains of tools you can run with one click. Paste input, get output. Edit any step.
Decode a JWT and pretty-print the result.
URL & TokensParse CSV with a header row and pretty-print as JSON.
JSON / CSV / YAMLTrim, drop blanks, lowercase, deduplicate, and sort a list of email addresses. Lowercasing first means Alice@… and alice@… dedupe correctly.
TextPretty-print messy SQL.
SQLBuild a Tailwind-style 50–950 palette from a base hex color.
CSS & ColorRender Markdown to HTML and pretty-print it.
HTML & Markdown