Developer Tools
Base64 Encoder/Decoder
Encode and decode Base64 strings instantly. Supports standard, URL-safe, and raw encodings.
developerCSS Minifier
Minify CSS to reduce file size. Strips comments, collapses whitespace, removes redundant semicolons.
developerJSON Formatter & Validator
Format, minify, and validate JSON online. Syntax highlighting with error detection.
developerJWT Decoder
Decode and inspect JSON Web Tokens. View header, payload, and signature without verification.
developerMarkdown Preview
Write Markdown and see rendered HTML in real time. Supports GitHub Flavored Markdown.
developerRegex Tester
Test regular expressions with Go/RE2 or JavaScript engines. See matches, groups, and captures in real time.
developerAI Token Counter
Count tokens for GPT-4, Claude, and Llama models. Estimate API costs before sending requests.
developerURL Encoder/Decoder
Encode and decode URLs and query strings. Supports full URL encoding and component encoding.
developerUUID Generator
Generate UUID/GUID v1, v4, and v7. Bulk generation up to 100 at once.
developerWord Counter
Count words, characters, sentences, and paragraphs. Estimate reading and speaking time.
developerYAML/JSON Converter
Convert between YAML and JSON formats instantly. Bidirectional, pretty-printed output.
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