Z

JSON Diff

Structural JSON comparison. Color-coded paths for added, removed, and changed keys. Optional ignore-array-order mode.

Free No signup Client-side Privacy friendly
+ added - removed ~ changed Computing…

How to use

  1. 1 Paste the original JSON on the left, modified JSON on the right.
  2. 2 Pick how arrays should be compared — by order or by membership.
  3. 3 Differences appear color-coded: added (green), removed (red), changed (yellow).
  4. 4 Summary counts at the top of the diff panel.

Why use this tool

  • Powered by <code class="font-mono text-xs">microdiff</code> — a tiny, fast structural diff library.
  • Library loaded lazily on first compare — keeps page lightweight.
  • Two array modes — strict order vs. set-style membership.
  • Pure client-side — both JSON payloads stay in your browser.

Frequently asked questions

What does "Ignore order" do?

It deep-sorts arrays before comparing. Useful when arrays represent unordered sets (tags, IDs) and order is not meaningful.

How are nested differences shown?

Each difference includes the full JSON path (e.g. <code class="font-mono text-xs">owner.region</code>) so you can locate it precisely in either document.

Need to format the inputs first?

Use <a class="text-brand-600 hover:underline" href="/json-formatter">JSON Formatter</a> to clean both inputs, then come back here.

Need to diff plain text or code?

Use <a class="text-brand-600 hover:underline" href="/text-diff">Text Diff</a> for character / word / line diffs.

Summary

JSON Diff is a free developer utility by Zerethon Tools. Structural JSON comparison. Color-coded paths for added, removed, and changed keys. Optional ignore-array-order mode. Runs entirely in the browser — no signup, no upload.

Category
Developer
Pricing
Free
Privacy
Browser-based
Signup
Not required

Privacy

Your data never leaves your browser unless explicitly stated. JSON Diff runs entirely client-side — no server upload, no logging, no tracking of your input.

Related tools

JSON Formatter

Format, validate, and minify JSON online. Free, no signup — your data never leaves your browser.

Open tool

SQL Formatter

Format SQL queries online — beautify MySQL, PostgreSQL, SQLite, SQL Server, Oracle, and BigQuery.

Open tool

UUID Generator

Generate UUIDs online — v1, v4, v7, and Nil. Bulk generation up to 10,000. Free, no signup.

Open tool

Password Generator

Generate strong, cryptographically random passwords. Configurable length and character sets — runs in your browser.

Open tool

Build, share, and grow on Zerethon Social

Free signup. Earn points, collect achievements, and connect with creators worldwide.

Sign up free