Developer tools that run locally.

JSON Formatter

Format, validate, and pretty-print JSON with syntax highlighting.

Base64 Encode/Decode

Encode and decode Base64 — text and files.

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes instantly.

Diff Checker

Compare two texts. Line-by-line and word-level diffs.

Colour Converter

Convert colours between HEX, RGB, HSL, HSB, and CMYK instantly.

Timestamp Converter

Convert Unix timestamps to human dates and back. Seconds and milliseconds.

Regex Tester

Test regex patterns with live match highlighting, flags, and capture groups.

URL Encode/Decode

Encode and decode URL strings instantly. Smart full-URL mode.

SQL Formatter

Format and beautify SQL queries. Keyword casing.

JWT Decoder

Decode JWT header and payload. Check expiration.

HTML Entities

Encode and decode HTML entities. Instant.

UUID Generator

Generate v4 UUIDs. Batch mode, format options.

Lorem Ipsum

Generate placeholder text. Paragraphs, sentences, words.

Slug Generator

Convert text to URL-friendly slugs. Transliterate accents.

Cron Parser

Parse cron to English. Next 5 run times.

HTTP Status Codes

Searchable reference. All standard codes.

Minify JS

Remove whitespace and comments from JavaScript.

Minify CSS

Remove whitespace and comments from CSS.

Minify HTML

Remove whitespace and comments from HTML.

XML to JSON

Convert XML to JSON and back. Bidirectional.

XML Formatter

Pretty-print and validate XML. Choose indent.

Beautify Code

Format JS, CSS, HTML, JSON, XML. Configurable indent.

Markdown Preview

Live Markdown editor with rendered preview.

YAML to JSON

Bidirectional YAML and JSON conversion.

TOML to JSON

Convert TOML configuration files to JSON.

JSON Beautifier

Pretty-print JSON. Configurable indent, instant preview.

JSON Minifier

Strip whitespace from JSON. Single-line output.

JSON Validator

Validate JSON syntax. Error line and column.