JSONFORGE
V2.0 — Local data pipeline · Code-Gen · Mock APIs 100MB+ Verified

Forge Your Data.

Privacy-first developer tools that run entirely in your browser. Format, validate, transform and inspect data — at the speed of thought.

Zero-Server Processing Instant Local Execution Fully Offline Capable No Data Uploads
Start UsingExplore Tools
forge://json-formatter● live
{"project":"JSONFORGE","version":"1.0.0","stack":["TanStack","Monaco","Framer"],"ship":true,"metrics":{"fps":60,"ttfb_ms":42}}
1{2  "project": "JSONFORGE",3  "version": "1.0.0",4  "stack": ["TanStack", "Monaco", "Framer"],5  "ship": true,6  "metrics": { "fps": 60, "ttfb_ms": 42 }7}
Tool ecosystem

A bento of precision instruments.

JSON Formatter
Pretty-print and indent JSON with instant syntax highlighting.
JSON
JSON Validator
Catch syntax errors with precise line + column hints.
JSON
JSON Minifier
Strip whitespace and ship the smallest payload possible.
JSON
JSON Diff
Side-by-side semantic diff with structural awareness.
JSON
JSON Tree Viewer
Interactive collapsible tree to navigate deep payloads.
JSON
JSON Beautifier
Smart indentation with sort-keys and quote normalization.
JSON
JSON → CSV
Flatten arrays of nested JSON objects into clean, spreadsheet-ready CSV with quoted strings and configurable delimiters.
JSON
CSV → JSON
Parse CSV into typed JSON arrays in one click.
JSON
View all tools
Performance

Built for the speed of thought.

Instant
Sub-50ms transforms with Monaco-powered editing.
Local-first
All processing happens in your browser. Nothing leaves.
60fps UI
GPU-accelerated motion, fine-tuned for flow state.
Composable
15+ tools that snap together for any data pipeline.
Keyboard-first

Shortcuts that respect your hands.

  • Open command palette⌘ K
  • Format current document⌘ ⇧ F
  • Minify current document⌘ ⇧ M
  • Toggle compare view⌘ /
  • Run / validate⌘ ⏎
  • Show all shortcuts?
Loved by builders

What developers are saying.

"JSONFORGE replaced 4 different bookmarks. The diff alone is worth it."
Mira K. · Staff Engineer
"It feels like Linear, but for raw data. Genuinely addictive."
Daniel R. · Founding Engineer
"Fastest JSON workflow I've ever used. The editor never lags."
Priya S. · DX Lead