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Developer tool
Compare two JSON objects side by side.
JSON Diff compares two JSON objects and lists key-level differences so you can see what changed between versions, environments, or API responses. Paste left and right objects, run compare, and read added, removed, and changed keys.
Config drift and API regressions often hide in large JSON blobs. A structured comparison is faster than visual scanning, especially when only a few keys differ.
This tool parses both sides as JSON objects and compares top-level keys: matching values, left-only keys, right-only keys, and keys whose values differ. Nested objects are compared as whole values via serialization of each top-level entry — deep path-by-path tree diffing is not the focus of this lightweight UI.
Use it for release notes, support tickets, and fixture updates. For huge documents or array-order-insensitive deep diffs, pair with specialized libraries in your CI pipeline. Comparison stays in the browser so staging configs need not be uploaded.
ezToolFlow is operated by Vishvajeet Shukla. For privacy details on browser tools, accounts, and AI features, read our Privacy Policy.
Left is the baseline (for example production or “before”); right is the candidate (staging or “after”). Both must be valid JSON objects.
Keys present on both sides with the same value are shown as unchanged; differing or missing keys are marked with + / − style lines.
Copy the summary into a ticket, fix the source of truth, or update tests to match intentional changes.
Compare prod vs staging feature-flag JSON and spot unexpected toggles before promote.
Diff two captured responses after a deploy to see which top-level fields moved.
Understand what your golden files will change to before you accept a new snapshot.
Tip: after you finish, check Related tools at the bottom of this page for the next step in your workflow.
Quick answers about tools, privacy, limits, and pricing.
It compares top-level keys on two objects. Nested structures are treated as the value of each key (serialized for equality). For fine-grained path diffs, use a dedicated deep-diff library.
The primary path expects objects with keys. Wrap arrays or convert to objects if you need a keyed comparison, or use a specialized array diff tool.
One or both inputs failed to parse. Fix trailing commas, quotes, or truncated paste content and try again.
Comparison runs client-side for this tool. Still avoid pasting secrets when a redacted sample would do.
Yes. JSON Diff is free to use on ezToolFlow. Guests and free accounts may have daily limits on some tools; premium tiers can raise or remove those limits. AI tools may also spend credits.
For browser-based tools, processing runs on your device when possible and files are not uploaded for conversion. Optional accounts, usage limits, and AI features are described in our Privacy Policy.
No for most tools — you can start as a guest. An account helps keep higher daily limits and saved work (for example AI resumes).
Close other heavy tabs, use a smaller input file, and try Chrome or Edge on desktop. Very large files can stress browser memory.
Yes, the page is responsive. Complex media or large PDFs still work better on desktop because of memory and CPU limits on phones.
JSON Diff runs in the browser so you can complete a task without installing apps. Desktop software may still be better for very large batch jobs or offline-only environments.
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