As developers, we constantly work with JSON — API responses, config files, logs, payloads, and data transformations.
I recently built a small project called jsondevtools.org to make common JSON-related tasks faster and easier.
Why I Built It
While debugging APIs and backend services, I found myself repeatedly searching for tools to:
Format JSON
Validate broken payloads
Decode JWT tokens
Convert JSON to YAML or CSV
Minify large responses
Most existing tools were:
overloaded with ads
slow
cluttered
or missing useful developer-focused features
So I decided to build a lightweight alternative focused on:
speed
simplicity
clean UI
privacy
Current Features
JSON Formatter & Validator
Pretty-print and validate JSON instantly.
JWT Decoder
Decode JWT payloads directly in the browser.
JSON ↔ YAML Converter
Convert between JSON and YAML formats.
JSON Minifier
Reduce payload size quickly.
Developer-Friendly UI
Dark mode
Mobile responsive
Fast client-side processing
No data uploaded to servers
Built With
HTML
CSS
JavaScript
GitHub Pages
The site is fully static and runs entirely in the browser.
Future Plans
I’m planning to expand this into a larger developer toolkit with:
XML tools
Base64 utilities
Regex tester
API testing helpers
SQL formatting tools
Schema generators
Feedback Welcome
I’d genuinely appreciate feedback from developers:
UI improvements
feature requests
SEO/content ideas
missing tools
Website:
Thanks for reading
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