YAML Merge

Deep-merge a YAML overlay onto a base document. Output stays YAML.

How to use

  1. Paste base YAML
  2. Paste overlay
  3. Copy the merged YAML

FAQ

Is my input uploaded?

No. Processing stays in your browser. Nothing is sent to our servers.

Related tools

  • YAML Diff — Compare two YAML documents with a structured diff — locally in your browser.
  • YAML Format — Pretty-print and repair YAML locally (multi-doc supported). Anchors and custom tags may not round-trip.
  • YAML Documents — List, select, and extract documents from multi-doc YAML streams (---).