JSON Diff Tool
A diff tool listing added, removed and changed paths.
JSON Diff Tool is a browser-based web developer tool on WebDevToolsBase. A diff tool listing added, removed and changed paths. To use it, paste your input and view the result directly in your browser — no signup and nothing to install.
JSON Diff Tool is a free JSON Tools utility that runs entirely in your browser — nothing you enter is uploaded.
Compares all object members safely, ignores object-key order, and compares arrays by index. Numbers are compared as exact decimal values; original number text is retained in differences. Paths use JSON Pointer escaping (~0 for ~ and ~1 for /). Duplicate object member names are rejected. Structural equality does not prove that two JSON Schemas allow the same data.
How to use JSON Diff Tool
- Paste the original JSON into the left panel and the revised JSON into the right panel.
- Edit either panel to run the comparison. A selected JSON file is read locally when this page offers file controls.
- Read + as added in the right document, − as removed from the left document, and ~ as changed. Paths identify the affected value.
- Use Copy after the comparison completes. Resolve any syntax or duplicate-member error before copying another result.
About this tool
This tool compares the structure and values of two JSON documents. Object member order is ignored; array positions are compared in order. Schema documents are compared as JSON data, so an equal or different result does not establish schema validity, logical equivalence, or compatibility.
Comparison runs in this browser. Entered JSON and selected file content are not sent to a comparison service. Keep original files separately; this tool produces a difference report and does not merge changes into either file.
Frequently asked questions
What does JSON Diff Tool do?
JSON Diff Tool runs entirely on your device: add your input, and it compares it locally in real time.
Do I need an account for JSON Diff Tool?
No — JSON Diff Tool needs no account, sign-up or installation.
Where is my data processed by JSON Diff Tool?
Entirely in your browser — JSON Diff Tool keeps your data on your own machine and sends nothing anywhere.
Can JSON Diff Tool handle large or deeply nested JSON?
Size is limited by the memory and responsiveness of your browser. Deeply nested and large files can take longer to parse and display. Save the original files and use a small representative example before comparing a large document.
Does JSON Diff Tool work offline?
Once the page has loaded, JSON Diff Tool keeps working with no network connection.