API CHANGELOG // DIFF

The Diff.

Name: API Changelog Diff
Author: 0xelitesystem

Paste two OpenAPI specs. Get a structured changelog: added, removed, changed, breaking. Export as Markdown.

Edition: 2026 JSON or YAML Browser only

Old Spec v1, base, "before"

New Spec v2, latest, "after"

Source: github.com/0xelitesystem/api-changelog-rss

Handles OpenAPI 3.x. JSON parses natively; YAML uses a small bundled parser supporting common subset (mappings, sequences, scalars, multi-line strings). For complex YAML with anchors or merge keys, convert to JSON first.