The JSONForge Browser Extension
The JSONForge browser extension brings the toolkit's formatter, validator, and viewer directly into the pages you're already on — API responses, devtools, and raw JSON endpoints — so you don't have to copy-paste into the website every time.
What the extension does
When you land on a page serving JSON (a raw API response, a JSON file, or content-type application/json), the extension detects it and offers to render it with the same formatter and tree viewer as the website — collapsible, syntax-highlighted, and validated. It's the website's viewing power, one click away, in context.
Installing it
The extension is published on the Chrome Web Store (and compatible browsers: Edge, Brave, Arc, Opera). From the site header, choose 'Get the extension' to open the listing, then click Add to Chrome. No account is needed — it runs locally, just like the website tools.
Extension vs. website
Reach for the extension when you're eyeballing live API responses in the browser and want instant readability without a context switch. Use the website for heavier work — conversions (YAML, CSV, TypeScript), schema validation, repair, the placeholder API — since the full toolkit lives there. They share the same engine, so results are identical.
Privacy
The extension processes JSON locally in your tab; it doesn't transmit your data anywhere. It only needs permission to read pages that serve JSON content.
FAQ
- Is the extension free?
- Yes — the extension is free, with no account required, matching the website's free-to-use tools.
- Which browsers are supported?
- Any Chromium-based browser with access to the Chrome Web Store: Chrome, Edge, Brave, Arc, Opera, and others. Firefox support depends on demand.
- Does it send my JSON anywhere?
- No. Formatting and viewing happen locally in your tab. Your data never leaves the browser.
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