A rejected delivery can cost you days. Most rejections trace back to something
small — an ISRC that gained hyphens, a title that changed between the spreadsheet and the export,
a contributor missing on one track. ReleaseDiff compares two metadata snapshots and shows you
exactly what changed, what fails validation, and what looks wrong, before you send anything.
🔒Your files never leave this page. The whole audit engine is embedded in this HTML file
and runs in your browser. It contains no network code at all — no fetch, no
XMLHttpRequest, no WebSocket. You can disconnect from the internet and it still works.
Before
no file
Drop a CSV here, or click to choose
After
no file
Drop a CSV here, or click to choose
Need the paperwork too? There is a paid kit.ReleaseDiff Pro — Label Metadata Change Audit Kit adds the parts a label
actually hands over: a printable approval record, a change-request form and a
distributor handoff checklist (editable DOCX and print-ready PDF), two metadata
workbooks, an operating guide, and three worked examples. Same engine, and the same
absence of network code, verified the same way. One file, no install. What you are using here stays free and
MIT — Pro is for when a human has to sign something.