C# Formatter - Format & Beautify C# Code Online
Format and beautify C# code online. Proper indentation, clean structure. Free, runs in your browser—no data sent to servers.
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Output
What Is a C# Formatter?
A C# formatter reorganizes C# code so it is consistently indented, properly spaced, and easy to read. It handles classes, methods, namespaces, properties, LINQ expressions, and all standard C# constructs. Good formatting makes code easier to review, debug, and maintain.
This tool has two modes: Format (beautify) and Minify (compress). Format adds proper indentation and whitespace; Minify removes comments and extra whitespace to reduce file size. Both run in your browser; no code is sent to a server.
How to Use This Tool
Choose Mode
Select Format to beautify C# code with proper indentation, or Minify to compress it by removing whitespace and comments.
Paste Input
Paste your C# code into the left editor. You can also click Sample to load an example, or Upload to load a file.
Copy Result
The right panel updates automatically. Use <strong>Copy</strong> or <strong>Download</strong> to save the result. To convert JSON to C#, try JSON to C#.
C# Formatter Examples
Before and after formatting a C# program with namespaces and classes:
Unformatted C#
Formatted C#
When Formatting Matters
Consistent code formatting reduces cognitive load when reading code and makes diffs easier to review in pull requests. C# projects often use tools like EditorConfig with Roslyn analyzers or IDE formatting rules for automated formatting. This tool is useful for quick one-off formatting without needing a local setup.
Minification is rarely used in C# since the code is compiled, but it can reduce source file size. For C# compilation and builds, use dotnet build or Visual Studio.
Frequently Asked Questions
Does this support all C# features?
This tool uses a brace-based indentation formatter that works well for most C# code including classes, namespaces, methods, and LINQ. For production use, consider IDE formatters or Roslyn analyzers.
Is my code sent anywhere?
No. All formatting runs entirely in your browser. No code is transmitted to any server.
What does Minify do?
Minify removes single-line comments (//), multi-line comments (/* */), and collapses whitespace. This reduces source file size.
Can I format C# files with attributes?
Yes. Attributes like [HttpGet], [Required], and others follow the same brace-based structure and are handled correctly.
How does this compare to Visual Studio formatting?
Visual Studio and Rider provide full Roslyn-based formatting with C# language awareness. This tool provides quick browser-based formatting without needing an IDE.
Related Tools
C# documentation is the official reference. C# code style rules cover formatting conventions. JetBrains Rider provides advanced C# formatting.