Fast everyday tools that run in your browser
Online tools that run locally
Format JSON, calculate file MD5, encode Base64 and URLs, convert colors, timestamps, JWTs, and more. Files and text stay local in your browser by default.
All Tools
Find the tool you need by category and use it right away.
JSON Formatter
Format, minify, and validate JSON locally in your browser.
File MD5
Drop or choose a local file to calculate its MD5 checksum.
Text Hash
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for text.
Base64 Converter
Encode and decode UTF-8 text with Base64 locally.
URL Encoder
Encode or decode URLs and query parameter values with encodeURIComponent.
Color Converter
Convert HEX colors to RGB and HSL with a live color preview.
Timestamp
Convert Unix timestamps to local time and back, supporting seconds and milliseconds.
UUID Generator
Generate UUID v4 values locally in your browser.
Text Counter
Count characters, words, lines, paragraphs, and UTF-8 bytes.
Case Converter
Convert text between camelCase, PascalCase, kebab-case, snake_case, and CONSTANT_CASE.
JWT Decoder
Decode JWT Header and Payload locally. Signature verification is not performed.
Regex Tester
Test a JavaScript regular expression against text and inspect matches.
Markdown Preview
Preview common Markdown syntax as HTML locally in the browser.
Why use these tools?
Most tools work immediately with no login and no extra software installation.
Text, files, and tokens are processed locally in the browser by default.
Common conversion, validation, and text utilities are collected in one place for quick tasks.