Interactive Tree View
Virtualized collapsible tree, search on the toolbar, breadcrumbs, and path copy.
Open tree viewFeatures
Everything in one JSON workspace
See JSON as text, tree, graph, node cards, or a nested table — in nine languages, in the browser or as a Windows and Linux app. Format, validate, query, schema, and diff stay in the workspace. Optional AI, snapshots, and Webhook Tester use the server when you choose them.
View & Navigate
Five ways to look at JSON — text, tree, graph, node, and table — plus Stats and JQ. All free.
Graph View
Force-directed galaxy map of the payload — relationships instead of a flat list.
Open graph viewNode View
JSON Crack–style canvas: object cards, bezier edges, arrays of objects as table-shaped nodes, zoom/fit/lock, and search. Nested objects stay inside the parent until they need their own card. Free.
Open node viewTable View
Nested spreadsheet: objects as Key/Value, arrays of objects as columns, expand/collapse, virtualized long lists. Free.
Open table viewSyntax-Highlighted Editor
Monaco editor — paste, format, minify, and stringify with colour-coded JSON.
Open editorStats View
Counts, types, and depth at a glance — a tool next to the five views.
View JSON statsNine UI languages
Switch the workspace in Workspace settings (header gear): English, Simplified Chinese (简体中文), Japanese (日本語), Korean (한국어), Português (Brasil), Spanish, French, German, Russian. Not on the profile page. Free.
Open workspace settingsPerformance Mode
Pro-only optimization for large JSON payloads — keeps tree, graph, node, table, and editor views responsive on files up to 50 MB. Node and Table stay available on Free; Performance Mode is the upgrade for huge files.
Unlock with ProFormat & Validate
Clean up payloads and catch syntax issues before they reach your app.
JSON Formatter
Beautify with readable indentation and consistent spacing in one click.
Try formatterMinify
Compress JSON for production payloads and compact storage.
Try minifierReal-Time Validator
Surface bracket mismatches, trailing commas, and unquoted keys as you type.
Try validatorQuery & Filter
Pull exactly the slice you need from large documents without writing a script.
JQ Filter Playground
Run full jq in the browser via WebAssembly with quick filters and syntax help.
Try JQ filtersJSONPath Query
Use familiar path expressions like $.store.book[*].author on any payload.
Try JSONPathAI Query Assistant
Describe what you need in plain English and get a valid jq filter instantly.
Try AI queriesAI-Powered Tools
Fix broken data, generate test rows, and speed up AI workflows.
AI JSON Fixer
Repair missing commas, unquoted keys, and common syntax errors automatically.
Try AI fixerAI Mock Data Generator
Generate realistic test rows from a schema with custom profiles and row counts.
Generate mock dataAI Prompt Enhancer
Refine and improve LLM prompts directly inside your JSON workspace.
Enhance promptsSchema & Types
Validate payloads and keep documentation accurate.
Schema Validator
Confirm data against OpenAPI definitions or custom JSON Schema rules.
Validate schemaSchema Generator
Create a draft schema from an example object for docs and contracts.
Generate schemaType Generator
Export types and interfaces for TypeScript, Python, Go, Rust, and more — this is code generation, not the nine UI languages in Workspace settings.
Generate typesCompare & Export
Review changes and move data between formats without leaving the tab.
JSON Diff
Side-by-side comparison highlighting added, removed, and modified fields.
Compare JSONCompare View
Paste two versions and see exactly what changed — including offline text compare in the desktop app.
Open compare viewImport & Export
Upload files from disk and export formatted JSON, CSV, and more.
Import & exportSharing & Collaboration
Collaborate without attaching files to chat.
Shareable Snapshots
Generate encrypted links with optional expiry for async reviews and bug reports.
Share snapshotsAnnotate
Attach notes to keys and values, including JSONPath context for teammates.
Try annotationsDeveloper Utilities
Extra tools that keep you in one workspace instead of tab-hopping.
Webhook Tester
Generate disposable public webhook URLs, capture live HTTP requests, mock responses, and verify signatures. Free tier: 3 endpoints, 25 requests each, 2-day retention.
Open Webhook TesterEncoder / Decoder
Handle common encoding and decoding tasks alongside your JSON editor. Included in the desktop app offline.
Open encoder tool