How are the files separated?
With standard --- document markers, producing a valid multi-document stream.
Merge toolLocal processingYAML document stream
Merge YAML
Merge YAML files as a safe multi-document YAML stream separated by document markers.
Accepted files
YAML
Add at least two valid files. The first valid file sets the format for this merge batch.
Files to merge
Use Move up and Move down to choose output order.
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Drop files here
Upload multiple YAML files, arrange them, then merge into one download.
No files added yet.
What this tool does
Merge YAML combines YAML files into one safe multi-document stream, separating each file with the standard document marker so nothing collides. It is the clean way to bundle several configs or manifests into a single file that still parses correctly.
How it works
Add your YAML files, set the order, and the tool joins them in your browser as a multi-document stream separated by --- markers. The merged file downloads as merged.yaml. Nothing is uploaded.
When to use Merge YAML
Bundling multiple YAML configs or manifests
Combining pipeline or deployment files
Keeping each document intact in one file
Merging YAML without an upload
FAQ
Does it merge keys across files?
No. Each file becomes its own document in the stream.
Are my files uploaded anywhere?
No. Everything runs in your browser and your files never leave your device.