100% client-side · nothing leaves your browser

Paste something.
Get working code.

Ten free developer tools that convert curl commands, JSON, YAML, cron expressions, timestamps, and more into real, runnable code — no signup, no server round-trip, no ads.

Data & Code
curl
curl → Code
Convert curl commands into working code in 14 languages and frameworks.
{ }
JSON → Code
Turn JSON into typed classes, safe parsing code, or ready-to-run loops.
⇄
YAML ⇄ JSON ⇄ TOML
Convert instantly between YAML, JSON, and TOML config formats.
.env
.env → Code
Turn a .env file into typed, safe config-loading code.
SQL
SQL Dialect Converter
Convert SQL statements between MySQL, Postgres, and SQLite.
Text & Encoding
.*
Regex → Code
Drop a regex into correctly escaped code for 8 languages.
#
JWT Decoder
Decode a JSON Web Token's header and payload — no signature sent anywhere.
Time & Scheduling
⏱
Timestamp Converter
Convert between Unix time, ISO 8601, and human-readable dates.
⏰
Cron Parser
Translate cron expressions into plain English, with next run times.
Reference
4xx
HTTP Status Codes
A searchable reference for every HTTP status code, with handling code.

Why these tools run entirely in your browser

Every converter on this site is a static page: no backend, no database, no account. When you paste a curl command or a JSON blob, the parsing and code generation happen in JavaScript running on your machine — the data never gets sent anywhere. That matters most for the tools that regularly see real API keys and tokens pasted into them, like the curl converter and the JWT decoder.

Built for the "I need this in a different language" moment

Most format converters stop at one target. These go further: paste a curl command and get it back as Python, Go, Rust, or eleven other languages; paste JSON and get typed classes, safe parsing code, or ready-to-run loops, not just a reformatted version of what you pasted.