Formatters, generators and decoders for everyday engineering work.
12 tools, all free and browser-based.
Pretty-print and validate JSON with useful error messages.
Read epoch timestamps as dates, and dates as timestamps.
Generate cryptographically random UUIDs in bulk.
Read the header and claims inside a JSON Web Token.
Convert between HEX, RGB, HSL, HSV and CMYK.
Strip whitespace to make JSON as small as possible.
Test a pattern against real text and see every match.
Make long queries readable with consistent keyword layout.
Indent XML properly, or collapse it onto one line.
Compute SHA-1, SHA-256, SHA-384 and SHA-512 digests.
Clean up delimiters, quoting and ragged rows.
Generate placeholder text by word, sentence or paragraph.