Compare YAML (YAML diff)

Put two YAML files side by side, such as two versions of a Kubernetes manifest, a CI pipeline or an app config, and see what changed, line by line and word by word.

Same layout on both sides

YAML can say the same thing in block style or in flow style ({a: 1}), with different indentation. Format both sides to lay them out the same way, so only real changes remain.

Key order

Turn on Sort keys before formatting to order every mapping alphabetically, so keys that merely moved don't show up as changes.

Errors pointed out first

Each side is checked as you type, so a mistake such as a tab used for indentation is pointed out with its line before you compare.

Find each change

Changed lines and words are highlighted, long unchanged stretches are folded, and the arrows jump from one change to the next. Both sides stay editable as the highlights follow, and Swap exchanges them.

Private: nothing is uploaded

Formatting, checking and comparing all happen in your browser. Your documents are saved in the browser's own storage on this computer, not on a server, so they never leave your device.

With your permission, we count anonymous visits (which pages and tools are used), never what you type. See Privacy.

Questions

How do I compare two YAML files?

Paste or open one on each side, or drop each file on its side, then Format both, with Sort keys on if the key order may differ.

Why do two files that mean the same show differences?

Usually layout: indentation, flow or block style, or key order. Format both sides with Sort keys on and those differences disappear.

Is my data uploaded anywhere?

Your documents aren't: everything runs in your browser, and they are saved on your computer, in the browser's storage for this site. With your permission we count anonymous visits, never their content.