Changelog

All notable changes to CodePrettify are documented here.

v1.0.1 Latest January 25, 2026

RSS/Atom Feed Support — New file format support for .rss and .atom files with syntax highlighting, auto-formatting, code folding for XML elements, clickable URLs (with entity decoding), and feed statistics (tags, attributes, namespaces, etc.).
Code Folding (JS) — Collapse/expand functions, classes, objects, and code blocks. Hover over a foldable line to see the fold toggle. Use Collapse All / Expand All buttons in the toolbar. Can be enabled/disabled in settings.
Bracket Matching (JS) — Hover over {, (, or [ to highlight its matching pair. Both brackets are highlighted with visual feedback. Can be enabled/disabled in settings.
Code Folding Setting (JSON) — Added a setting to enable/disable the collapsible JSON feature.
Code Statistics Panel — View file size, line count, and character count. Language-specific stats: JSON (object depth, key count, array sizes), JS (function count, variable count), CSS (selector count, rule count, media queries).
Hex/RGB Color Preview (CSS) — Color swatches appear next to color values. Click to copy color in different formats. Includes a color picker.
Breadcrumb Navigation (JSON) — Shows path like root › data › users[0] › name when hovering/clicking. Click any breadcrumb to jump to that level.
Clickable URLs & Imports — URLs in strings and import/require paths are now clickable links.

Unified Layout — Adjusted all modal windows, toolbars, and UI elements to use CSS variables instead of hardcoded colors for consistent theming.
Enhanced Syntax Checker — Removed vanilla JavaScript validation and replaced it with a sandboxed environment for safer and more accurate syntax checking.

RSS Feed Rendering — Fixed issue where RSS feeds opened in a background tab (XHTML mode) failed to render correctly or caused high CPU usage. Now waits for tab visibility before rendering.

v1.0.0 Initial Release January 2026

Auto-Format: Automatically detects messily formatted code and beautifies it with your preferred indentation
Intelligent Minification Detection: Analyzes code density—if a file is minified, it formats it automatically; if it's already clean, it adds syntax highlighting
Local File Support: Works seamlessly on web URLs and local files (file://) opened in the browser
Zero-Flash Loading: Engineered to prevent raw text from flashing before the beautifier loads

Don't just read code—debug it. CodePrettify scans your files for common errors with instant feedback.

JSON: Detects syntax errors and provides the exact line number
JavaScript: Identifies mismatched braces, brackets, and common typos
CSS: Validates structural integrity
Instant Feedback: Invalid code triggers non-intrusive toast notifications with error details

Collapsible Data: Fold arrays and objects to navigate large datasets easily
Smart Previews: See summary info (e.g., Array(5) or {3 keys}) when blocks are collapsed
Clickable Links: URLs inside JSON strings automatically become clickable hyperlinks
Expand/Collapse All: Dedicated buttons to manage massive JSON files instantly

Advanced Search: Custom search bar (Ctrl+F) with result counting and navigation—works even on huge files
Go To Line: Jump straight to specific lines (Ctrl+G), perfect for debugging stack traces
Export Options: Download your file in three formats: Original, Formatted, or Minified
Copy to Clipboard: Quick one-click copy functionality

Themes: Choose between Light, Dark, or Auto (syncs with system)
Format Settings: Adjustable font size (10-24px), indentation (2 or 4 spaces), and line numbers
Privacy First: 100% client-side—your code never leaves your browser

Supports 14 languages including English, Norwegian, German, Spanish, and Chinese.