Small, sharp tools that do one thing well.
Sourwood Labs builds focused browser extensions and developer utilities — the kind that solve a real, specific problem, respect your privacy, and stay out of your way. No bloat, no accounts, no tracking your browsing.
Every Sourwood Labs product is a self-contained tool with a single clear job. We charge a fair one-time price for the advanced features and keep the essentials free.
Chrome & Edge tools
Lightweight extensions for developers, writers, and everyday power users — formatters, converters, and cleaners that work instantly, offline, in a click.
Workflow utilities
Focused command-line and integration tools that automate the tedious parts of building software, published open-source where it helps the community.
One-time, fair pricing
Buy once, own it. Premium features unlock with a single purchase — no subscriptions you'll forget to cancel, no ads, no data harvesting.
JSON Formatter — Paste & Validate
Our first release. Paste any JSON and get it formatted, validated, and error-located in an instant — right in your browser, entirely offline.
- Format & minify with one click
- Pinpoint syntax errors to the exact line and column
- Tree view, JSON-path lookup, and format conversion (premium)
- Requests only storage permission — it can't see your browsing
Privacy by default
Our extensions request the narrowest permissions possible and never collect your page content or browsing history. What happens in your browser stays there.
No dark patterns
Clear one-time pricing, honest free tiers, and an obvious way to reach a human. No manipulative upsells, no buried cancel buttons.
Small & fast
Every tool loads instantly and works offline. We'd rather ship one thing that's excellent than ten things that are mediocre.