JSONVault Pro

Name: JSONVault Pro
Rating: 5 (3 reviews)
Author: Valentin Conan

JSON viewer & formatter with JWT decode, diff, JSONPath. Formats JSON, YAML, XML instantly. Zero tracking. Privacy-first.

As of June 2026, JSONVault Pro has 25 users and a 5.00/5 rating from 3 reviews in the Developer Tools category.

Valentin Conan Developer Tools

Chrome Web Store ↗.crx

Users+316.7%

Rating0%

5.00

3 reviews

Reviews+200.0%

Version

1.0.3

Manifest V3

90-day change · In the last 90 days this extension 1 version update.

History

7 snapshots

Tracking since Apr 17, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 17, 2026	6	5.00	1	1.0.2
Apr 24, 2026	15	5.00	3	1.0.3
May 8, 2026	19	5.00	3	1.0.3
May 18, 2026	22	5.00	3	1.0.3
May 24, 2026	21	5.00	3	1.0.3
May 31, 2026	22	5.00	3	1.0.3
Jun 6, 2026	24	5.00	3	1.0.3
Now	25	5.00	3	1.0.3

Permissions & access

Permissions: storagewebRequestscriptingwebNavigationalarmscontextMenus
Host access: <all_urls>

Screenshots

About

JSONVault Pro — The JSON, YAML & XML viewer built for developers who care about privacy.

Instantly formats and beautifies any JSON, YAML or XML page into a clean, interactive, searchable tree. No config, no signup, no tracking. Your data never leaves your machine.

CORE FEATURES (FREE)
- Auto-detects and formats JSON, YAML and XML on any URL
- Collapsible tree view with item counts
- Dark mode + Light, Sepia, High Contrast themes
- Full-text search with highlight
- Sort keys alphabetically
- Copy JSONPath to any value
- Side-by-side diff tool
- DevTools panel with network request capture
- Standalone viewer (paste, import file, drag & drop)
- Web Worker parsing for large files (1MB+)
- Context menu: "Open in JSONVault Pro" on any page
- Zero tracking. Zero analytics. Zero telemetry.

PRO FEATURES
- JWT auto-decode: detects eyJ... tokens and shows decoded header + payload inline — no more jwt.io
- Base64 auto-detect with inline decode
- JSON Schema validation
- JSONPath queries directly in the browser
- Advanced diff: inline mode, ignore key order, ignore whitespace, type coercion
- Export to YAML, XML, CSV, TypeScript
- Document history (50 entries)
- 21 premium themes (Dracula, Catppuccin, Nord, Monokai, Solarized, GitHub, and more)
- Virtual tree rendering for files up to 500MB
- Live editing with validation and minify
- Collapse to Level N
- Smart Values: timestamps, colors, emails, IPs, UUIDs decoded inline

BUILT DIFFERENT
JSONVault Pro was built after the JSON Formatter / Give Freely incident of January 2026, where the most popular JSON extension (2M+ users) injected donation popups on checkout pages without consent.

This extension is the opposite: no tracking, no analytics, no telemetry, no surprises. The code runs entirely in your browser. No data is ever sent anywhere.

PERMISSIONS EXPLAINED
- Storage: saves your preferences locally
- WebRequest: reads Content-Type headers to detect JSON/YAML/XML (read-only, never modifies requests)
- Scripting: injects the viewer only when a structured format is confirmed
- All URLs: JSON/YAML/XML can come from any domain — the extension needs to work everywhere

Questions or bugs? https://github.com/valentinconan/jsonvault-pro-site/issues
Website: https://jsonvaultpro.com