JSON is everywhere — APIs, configs, logs, exports, payloads, diffs.
If you build software, you already spend a non-trivial part of your life working with it.
Most JSON tools fall into two camps:
- Too basic — format and validate, then you’re on your own
- Overengineered — cluttered UIs, half-useful features, slow workflows
StableJSON sits in between.
It’s a focused workspace for actually working with JSON, not just prettifying it.
Live app: https://stablejson.vercel.app
Repo: https://github.com/debjit450/stablejson
Formatting Isn’t the Hard Part
Pretty-printing JSON is solved. Every editor can do that.
The real problems show up when you need to:
- Compare large API responses
- Debug payload mismatches
- Clean data before storage or hashing
- Generate types from unknown or evolving structures
- Ensure identical data always produces identical output
That’s where things usually break down:
- Key order changes
- Nulls and empty values add noise
- Diffs become unreadable
- Hashes change unexpectedly
- Generated types drift from reality
StableJSON is built specifically around these failure points.
What StableJSON Actually Gives You
StableJSON is a browser-based JSON workspace with tools that cover the entire JSON workflow:
- Validate & format JSON with proper indentation
- Clean null, undefined, and empty values in one step
- Side-by-side JSON diff with clear highlighted changes
- Path inspection & extraction for deeply nested data
- Automatic TypeScript interface and Zod schema generation
- Canonical JSON output for consistent hashing and comparison
- JSONPath queries to slice complex objects
- Structure analysis (depth, size, data types)
- Transform, flatten, and reshape JSON safely
- Custom validation rules when default checks aren’t enough
It’s not a collection of random utilities — it’s one coherent workflow.
Canonical JSON Is the Quiet Power Feature
One of the most important features in StableJSON is canonical output.
When JSON is deterministic:
- Hashes stop changing randomly
- Cache keys become reliable
- Diffs stay readable
- CI checks stop failing for no apparent reason
If you’ve ever had two JSON objects that look identical but serialize differently, you already know why this matters.
Canonical output isn’t flashy — but it prevents entire classes of bugs.
Who This Is Built For
StableJSON is for developers who:
- Debug APIs regularly
- Care about correctness, not just visuals
- Work with large or dynamic JSON structures
- Need reliable diffs, hashes, and generated types
- Want one tool instead of five scattered ones
If JSON is part of your daily workflow, this tool earns its keep very quickly.
Closing
Most JSON tools stop at “looks nice”.
StableJSON goes further — it helps you understand, compare, clean, and stabilize your data.
When you need JSON to be right, not just readable, this is the tool you reach for.
Try it: https://stablejson.vercel.app
Explore the code: https://github.com/debjit450/stablejson
Top comments (1)
Really useful tool — thank you!