How to review a JSON comparison
Open JSON Diff when you have two JSON documents to check. Paste the earlier document and the revised document into its inputs, then review added, removed, and changed values by JSON path. The comparison runs locally in your browser, so the documents are not uploaded.
Compare two JSON documents
Paste the two versions into JSON Diff. The result identifies added, removed, and changed values by JSON path, which lets you move directly to the field that needs review.
Review JSON changes by path
The syntax-highlighted diff keeps each change beside the JSON around it. When you need a shorter record, switch to the JSON Patch-style result, which presents the comparison as paths and changes.
Review added, removed, and changed JSON values
A small change can be hard to spot in a long object. A path-based result points to the field that changed.
The value at role is changed when the earlier document contains "role":"editor" and the revised document contains "role":"admin". If a key exists only in the revised document, it is added. If it exists only in the earlier document, it is removed.
Choose a JSON diff or JSON Patch-style result
Use the syntax-highlighted diff to read the surrounding JSON and see each change in context. Use the JSON Patch-style result when you need a compact record of the paths and changes. Both views describe the same comparison.
The two inputs should represent the versions you want to compare. A missing key is treated as an added or removed value, which keeps the result tied to the structure of the documents rather than to a general text summary.
Where JSON comparison comes up
- A developer checks an API response before and after a backend change, then exports the diff for a code review.
- A technical writer compares two configuration examples and confirms which settings were added or removed.
- A support engineer compares a working JSON payload with a failing one and follows the reported path to the changed value.
- A data analyst checks two saved exports before passing the changed fields to a teammate.
When to use JSON Diff
Use JSON Diff when you need to compare two JSON documents and inspect their differences. For another JSON task, open the JSON Tools category and choose the matching page. This comparison page has one child, JSON Diff.
Frequently asked questions
How do I compare two JSON documents?
Paste the two documents into JSON Diff. It shows added, removed, and changed values by JSON path. You can inspect a syntax-highlighted diff or a JSON Patch-style result, then export the comparison.
Can I find changed JSON values by path?
Yes, JSON Diff reports changed values by JSON path. A path such as role identifies the field whose value differs between the two documents.
What is the difference between a JSON diff and JSON Patch-style output?
A syntax-highlighted diff shows the documents and their changes in context. A JSON Patch-style result presents the paths and operations in a compact form.
Does JSON Diff upload my documents?
No. JSON comparison runs locally in your browser with no upload, so the documents stay in the browser during the comparison.