Code Viewer

View and highlight source code directly in your browser. Upload a code file or p...

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Updated

Drag & Drop or Click to Upload

Supports .js, .ts, .py, .java, .cpp, .go, .rs, .html, .css, .sql, .sh, .yaml, .json, .md, and more

Or Paste Code

Code Viewer Features

Everything you need to read code

Syntax highlighting for 15+ languages
Line numbers with click-to-select
Regex-powered search with match count
Light & dark theme toggle
Minimap overview panel
Adjustable font size (12-20px)
Word wrap toggle
Go to line number
Copy all or selected lines
Fullscreen mode
File stats (lines, chars, size)
100% private - no upload

Why Use Code Viewer?

Syntax Highlighting

Automatic keyword-based highlighting for 15+ languages. Keywords, strings, numbers, comments, and functions are color-coded for readability.

Powerful Search

Find any text in your code with regex support, match count, and next/prev navigation. All matches are highlighted in the editor.

Light & Dark Themes

Switch between a clean light theme and a dark VS Code-inspired theme. Comfortable viewing in any environment.

Fullscreen & Minimap

Go fullscreen for distraction-free reading. The minimap gives a bird's-eye view of your entire file at a glance.

Common Use Cases

Why view code online

Quick Code Review

Quickly review code files sent by teammates or found online without opening an IDE. Syntax highlighting makes it easy to read.

Debug & Inspect

Search for specific patterns, variables, or function calls across a file. Highlight lines of interest to focus your debugging.

Learning & Teaching

View code samples with proper highlighting to study syntax. Great for tutorials, workshops, and code walkthroughs.

View on Any Device

Read code on tablets or phones where IDEs are not available. Responsive design ensures readability on any screen size.

How It Works

1

Upload or Paste Code

Drag and drop a code file, paste code directly, or load a sample to get started instantly.

2

Language Auto-Detected

The language is detected from the file extension. You can also override it manually from the dropdown.

3

Explore Your Code

Browse with line numbers, search for patterns, highlight specific lines, and toggle word wrap.

4

Copy or Download

Copy the full code or selected lines to clipboard, or download as a file.

Pro Tips for Code Viewing

Use Keyboard Shortcuts

Press Ctrl+F to open search, Ctrl+G for go-to-line, and Escape to close overlays. Shift+click line numbers for range selection.

Try Dark Mode

Dark mode reduces eye strain during long reading sessions. The Catppuccin-inspired palette is easy on the eyes.

Regex Search Tips

Use \bword\b for whole-word matches, .* for wildcards, and [0-9]+ for number patterns. Invalid regex falls back to literal search.

Adjust Font Size

Increase font size for presentations or decrease it to see more code at once. The minimap scales accordingly.

Frequently Asked Questions

We support syntax highlighting for JavaScript, TypeScript, Python, Java, C, C++, C#, Go, Rust, Ruby, PHP, Swift, Kotlin, HTML, CSS, SCSS, SQL, Bash/Shell, YAML, JSON, TOML, INI, Markdown, and plain text.
We use keyword-based regex matching to identify tokens like keywords, strings, numbers, comments, and function names. Each token type is assigned a color for clear visual distinction.
Yes. The search bar supports full regex syntax. Type a regex pattern and it will highlight all matches. Use the next/prev buttons or Enter/Shift+Enter to jump between matches.
Click any line number to highlight that line. Hold Shift and click another line number to select a range. Click a highlighted line number again to deselect it.
No. All processing happens entirely in your browser. Your code never leaves your device. It is 100% private and secure.
The minimap is a small overview panel on the right side of the code area that shows a simplified, zoomed-out view of your entire file. It helps you navigate large files quickly.
Yes. Use the font size controls in the toolbar to adjust between 12px and 20px. This affects only the code display area.
There is no hard limit since processing is local, but files over 5MB may cause slower highlighting. For best performance, files under 2MB are recommended.
Yes. Click the download button in the toolbar to save the code as a file. The filename and extension are preserved from the original upload.
No. Word wrap is a display-only setting. The downloaded file contains the original code without any wrapping changes.

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