JSONViewerTool vs fedo
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
JSONViewerTool compared with fedo
| Detail | 
JSONViewerTool | 
fedo |
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| What it does | Fast, browser-based JSON viewer, formatter, validator and converter that runs entirely client-side
| In-app feedback and feature voting SDK for Android and iOS
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Free
| Freemium
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| Pricing | Not given
| Starter: Free (1 app, no credit card). Plus and Pro are in early access with locked-in rates available on request via email.
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| Key features | - View JSON in tree, code, and text modes
- Format and beautify unreadable JSON
- Validate JSON and catch syntax errors
- Minify JSON to reduce payload size
- Convert JSON to CSV, Excel, YAML, and XML
- Decode JWT tokens and inspect claims
- Generate UUIDs and encode or decode Base64 data
- Compare and diff JSON structures
- Sort, search and transform JSON data
- All processing runs 100% client-side in browser
| - Native feedback screen that matches app theme automatically
- One-tap upvoting for feature requests
- Comment threads with replies on Plus and Pro
- Users and external IDs list
- Guest user support without login required
- Data export as JSON or CSV
- Webhooks for Slack, Discord, and custom integrations on Pro
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| What makes it different | - Privacy-first: all processing runs client-side with no server uploads, storage or logging
- No installation or signup required; works directly in modern web browsers
- Side-by-side input and output view for easy comparison and debugging
- Comprehensive toolset covering viewing, formatting, validation, conversion and comparison in one place
- Works on desktop and mobile browsers without any setup time
| - Users submit feedback without creating an account or leaving the app
- Automatically matches Material theme on Android and native styling on iOS
- Free plan for one app with no credit card required
- No passive data collection, only fixed device properties and user submissions
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 9 ▲ +2 (up) since last check | Not checked yet |
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| Trust Flow (Majestic) | 7 | Not checked yet |
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| Citation Flow (Majestic) | 30 | Not checked yet |
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| Referring domains (Majestic) | 48 | Not checked yet |
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4 details filled in for both companies.
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