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66+ free developer tools. No login. No servers. No tracking.
Instant results, all in your browser.
Popular Tools
HotJSON Formatter
Format, validate, and beautify JSON with syntax highlighting.
SQL Formatter
Format SQL queries with support for multiple dialects, including MySQL, PostgreSQL, SQLite, SQL Server, and Oracle.
Base64
Encode and decode Base64 strings, files, and images.
JWT Encoder & Decoder
Decode JWT tokens, verify signatures, and generate custom signed JWTs.
API Tester
Send HTTP requests and inspect responses. Like Postman, in your browser.
URL Encoder
Encode, decode, and parse URLs with full component breakdown.
cURL Converter
Convert cURL commands to fetch, axios, Python, PHP, or Go.
JSON → TypeScript
Paste JSON and instantly get TypeScript interfaces with nested types and optional fields.
Regex Tester
Test regular expressions with live match highlighting, group capture, replace mode, and code export.
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