All Developer Tools
Browse our complete catalog of browser-based utilities. All tools process data locally on your device for absolute speed and privacy.
JSON Formatter
Format and beautify unformatted JSON strings into structured, indented code.
JSON Validator
Validate JSON syntax and identify exact error positions with detailed diagnostic messages.
JSON Minifier
Compress JSON code by removing all whitespace, indentations, and newlines.
JSON Viewer
Inspect complex JSON data structures with collapsible tree nodes and data type badges.
Base64 Encoder
Encode text strings and binary data into standard Base64 string format.
Base64 Decoder
Decode Base64 encoded strings back to human-readable UTF-8 text.
URL Encoder
Encode text characters into percent-encoded URL string component formats.
URL Decoder
Decode percent-encoded URL strings back into human-readable characters.
UUID Generator
Generate cryptographically secure v4 and v1 Universally Unique Identifiers (UUIDs).
Unix Timestamp Converter
Convert Unix epoch timestamps to human-readable dates and vice versa.
Regex Tester
Test and debug JavaScript regular expressions with real-time match highlighting.
Color Converter (HEX / RGB / HSL)
Convert color codes between HEX, RGB, HSL formats with interactive color picker.
HTML Formatter
Format, clean, and beautify raw HTML markup with consistent indentation.
CSS Formatter
Format and beautify CSS stylesheets with clean rule indentation.
Markdown Editor & Previewer
Write and edit Markdown with live dual-pane HTML rendering preview.