Developer Tools
JSON, hashing, encoding and formatting tools for everyday development work.
Base64 Encoder & Decoder
CSS Minifier and Beautifier
CSV to JSON
Colour Converter
Cron Expression Generator
HTML Entity Encoder & Decoder
HTML Formatter
HTTP Status Codes
Hash Generator (SHA-256)
IP Subnet Calculator
JSON Formatter & Validator
JSON to YAML Converter
JWT Decoder
Markdown Preview
Regex Tester
SQL Formatter
URL Encoder & Decoder
UUID Generator
Unix Timestamp Converter
User Agent Parser
XML Formatter
About these developer tools
There are 21 tools in this section. Each one opens straight into the tool — no account, no upload limit and no watermark. The work happens inside your own browser, so whatever you type or open stays on your device.
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Free to use, no sign-up, works on any phone.
Everything on this page runs inside your own browser. Nothing you type or upload is sent to
a server, so your data never leaves your device.