Free Developer Tools

About these tools

This page lists every tool on What Am I Sending. The encoders, the converters, the JWT decoder, the UUID generator, the timestamp converter, the regex tester and the hash generator all run client-side, so the text you paste never leaves your browser, and none of them require an account.

The HTTP request logger is the one tool that stores something: it gives you a URL that captures incoming requests so you can inspect and replay them. Captured requests are deleted automatically after 5 days, and the endpoint itself is deleted once it has been idle for 5 days.

All tools

• Base64 Encoding / Decoding — Encode text to Base64, or decode Base64 back to readable text.
• URL Encoding / Decoding — Percent-encode text for URLs, or decode %XX sequences back to plain text.
• XML Encoding / Decoding — Escape the five XML characters as entities, or decode entities back to text.
• JSON ⇄ YAML Converter — Convert JSON to YAML or YAML to JSON without leaving the browser.
• Hash Generator — Generate MD5, SHA-1, SHA-256, SHA-512, SHA-3 and RIPEMD-160 digests.
• JWT Decoder — Decode a JWT and read its header, payload claims and expiry.
• UUID Generator — Generate random v4 or time-ordered v7 UUIDs, singly or in bulk.
• Unix Timestamp Converter — Convert Unix epoch values to readable dates, and dates back to epoch.
• Regex Tester — Test a regular expression live, with match highlighting and capture groups.

When to use it

• Finding the right encoder, decoder, converter or generator without a search
• Jumping straight to the tool you use most often
• Seeing everything the site offers before you bookmark it

Worked example

Input

base64 → /base64

Output

https://whatamisending.dev/base64

Every tool has a stable, linkable URL you can bookmark or share.