JSON Editor Free
Open and edit JSON files up to 4 GB in your browser
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A two-panel JSON editor that runs in your browser: text, tree and table modes, compare, JSON Schema validation, JSONPath/JMESPath queries, repair and CSV export. New: files over 100 MB open in huge file mode, up to 4 GB. The file stays on disk, a worker checks it in one streaming pass, and the tree reads rows as you scroll. Open any part up to 50 MB in the second panel to edit it. Free, no account, files stay on your device.
PH · launched Oct 27, 2026 · 1 upvote (top 67%) · 0 views
Niche: json tools and utilities · 64 launches, 3 in the last 7 days ▼ -40% · Explore this niche →
Category and tags
- Horizontal
- Dev tools
- Developer
- Not AI
- Commercial product
- Developer Tools
Visit website ↗ Source listing ↗
More like this: all 64 launches in json tools and utilities →
Could you build this?
Yes A browser JSON editor with tree, table, schema validation, and query modes is a known problem space. Handling 4 GB files with streaming parsing in a Web Worker and the File System Access API is demanding but achievable with careful engineering.
Competitors
Other products that read as similar to this one : 351 launches clear the similarity bar, closest 8 shown.
Attention rank: #177 of 352 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 360 days after the earliest competitor.
- GigaJSON · ph · 2026-10-13 · 1 upvotes · similarity 0.77
- JSONaire · ph · 2026-09-19 · 7 upvotes · similarity 0.64
- BigLeaf · ph · 2026-10-12 · 1 upvotes · similarity 0.62
- Private JSON Formatter · ph · 2026-10-29 · 1 upvotes · similarity 0.55
- JSON Lens · ph · 2026-09-30 · 1 upvotes · similarity 0.55
- Parsekit — Free JSON Tools for Developer · ph · 2026-09-29 · 1 upvotes · similarity 0.53
- JSONJet · ph · 2026-10-23 · 1 upvotes · similarity 0.53
- JSON Formatter - Browser Tools · ph · 2026-09-25 · 2 upvotes · similarity 0.52
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.