Tool category · Development
Free developer tools
Format JSON, test your regexes, decode a JWT, generate UUIDs or convert a timestamp: small tools that save you time every day, with nothing to install.
1-8 of 8 tools
💸Development
API Cost Calculator
Estimate API request volumes, monthly costs, quotas, retries, and rate limits.
Open📋Development
JSON Formatter & Validator
Format, validate and minify your JSON in real time.
Open🆔Development
UUID Generator
Generate v1, v4 and v7 UUIDs in bulk.
Open🎯Development
Visual Regex Tester
Test your regular expressions with real-time highlighting.
Open🔑Development
JWT Decoder
Decode and inspect the header and payload of your JWT tokens.
Open📝Development
Markdown Preview
Preview your Markdown in real time and export the HTML.
Open🔢Development
Number base converter
Convert numbers between binary, octal, decimal and hexadecimal.
Open🕒Development
Timestamp Converter
Convert Unix timestamps to dates and back.
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