About JSON Diff
Use this free compare when you need json diff without installing extra CLI tools. Deep-compare two JSON objects and see added, removed, and changed paths side-by-side. Because processing never leaves your browser, it is a safer default for private payloads, tokens, and unpublished configs. Jump to related converters tools in the same workspace when you are done.
What stays local: Inputs you process with JSON Diff.
What you can do with JSON Diff
- Free online json diff — no account required
- Convert JSON Diff formats quickly for development workflows
- Runs locally in your browser (nothing uploaded for processing)
- Works offline after installing the DevTooKit PWA
How to use JSON Diff
- Open JSON Diff. Go to the free JSON Diff page on DevTooKit.
- Enter your input. Paste or type your json diff data — it stays in this browser tab.
- Run the tool. Use JSON Diff to get results instantly with no server round-trip for processing.
- Copy and continue. Copy the output into your editor, PR, or API client as needed.
Privacy
What stays local: Inputs you process with JSON Diff. DevTooKit is local-first — no signup wall, no server-side processing for this tool, and no watermark on results.
Related tools
FAQ — JSON Diff
Privacy, offline use, and how this free online tool works.
Does JSON Diff upload my data to a server?
No. JSON Diff runs in your browser. Your input stays on this device and is not sent to DevTooKit for processing.
Is JSON Diff free?
Yes — free, with no account and no paywall to use the core json diff workflow.
How accurate is JSON Diff?
It uses well-known client-side libraries and browser APIs. Unusual edge-case formats may still need a manual check.
Can I use JSON Diff offline?
Yes after the first visit. Install DevTooKit as a PWA and this tool keeps working without a network connection.