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Preview of Universal File Viewer

Universal File Viewer by walid ahdouf

Beautify and highlight JSON, YAML, XML, CSV, and TOML files with syntax highlighting, tree view, and formatting tools directly in Firefox browser tabs.

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About this extension
Transform raw data files into beautifully formatted, syntax-highlighted documents with interactive features. Supports JSON, YAML, XML, CSV, and TOML formats with automatic detection. Features include:

• Syntax highlighting with multiple themes
• Interactive tree view for JSON/YAML structures• Raw/formatted view toggle
• Copy to clipboard functionality
• Download formatted files
• Customizable settings (line numbers, indentation, themes)
• Statistics tracking for file usage

Perfect for developers, data analysts, and anyone working with structured data files. No external dependencies required - works entirely offline.
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Required permissions:

  • Access your data for all websites
More information
Version
2.1.2
Size
136.96 KB
Last updated
11 days ago (Oct 1, 2025)
Version History
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