Tools

A growing toolbox of fast developer utilities. The client-side tools run entirely in your browser — your input never leaves your machine.

Webhooks

Temporary URL, live request inspection, configurable response.

Plain or regex find/replace.

Match highlighting and capture groups.

Line-level diff with add/remove highlighting.

Structural diff of two JSON documents.

Pretty-print and minify JSON with syntax highlighting.

Escape and unescape strings as JSON.

Encode and decode text and images.

SHA-1/256/384/512 and HMAC variants.

Decode claims and verify HS256 signatures.

Build and sign HS256 tokens.

Generate UUID v4 and ULID identifiers.

Epoch, ISO-8601, and human-readable.

Describe expressions and preview next runs.