Swift Compressor
Remove comments and excess whitespace from Swift source files online for free. The swift compressor correctly handles all Swift string types — raw strings, multi-line strings, and nested block comments — before removing comments and collapsing whitespace. Configure 6 compression options individually. Runs entirely in your browser with no signup required.
Swift Input
.swift files — string literals, raw strings, and multi-line strings preserved
Compressed Swift Output
Read-only — copy or download the compressed output
Swift-aware compression
The compressor parses Swift character by character to correctly handle all string types — regular strings, multi-line strings (triple-quoted), and raw strings (#"..."#) — before removing comments and whitespace. Nested block comments (/* /* */ */) are also handled correctly.
Why Use Our Swift Compressor?
Instant Swift Compression
Compress Swift source files instantly in your browser — no upload wait, no server queue. The swift compressor processes your code in milliseconds and shows exact byte savings, line count reduction, and compression percentage.
Secure Swift Compressor Online
Your Swift code never leaves your device. The swift compressor runs entirely in your browser — no server uploads, no data transmission, 100% private. Safe for proprietary iOS, macOS, and server-side Swift code.
Swift Compressor Online — No Installation
Use the swift compressor directly in any modern browser with no Xcode, no plugins, and no account required. Works on Windows, macOS, Linux, and mobile devices — compress Swift code from anywhere.
100% Free Forever
The swift compressor is completely free with no signup, no premium tier, no file size limits, and no ads. Compress unlimited Swift source files at zero cost, forever.
Common Use Cases for Swift Compressor
iOS and macOS App Distribution
Compress Swift source files before sharing code snippets, distributing sample projects, or publishing open-source iOS and macOS libraries. The swift compressor removes all comments and whitespace while preserving the complete logic.
Code Snippet Sharing
Compress Swift code snippets before sharing on Stack Overflow, GitHub Gists, or developer forums. The swift compressor reduces snippet size while keeping the code fully functional and readable.
Open-Source Package Distribution
Compress Swift Package Manager library source files to reduce download size for package consumers. The swift compressor removes documentation comments and whitespace from production builds.
Server-Side Swift Deployment
Compress Vapor, Hummingbird, or Kitura Swift server source files before deployment to reduce artifact size. The swift compressor removes all development comments while preserving the complete server logic.
Embedded Swift Payloads
Compress Swift code that is embedded as strings in configuration files, code generators, or template systems. The swift compressor produces the smallest valid Swift representation for embedding.
Code Review and Audit Preparation
Strip comments and whitespace from Swift files before submitting to automated code analysis tools or security audits. The swift compressor reduces noise while preserving all executable code paths.
Understanding Swift Code Compression
What is Swift Code Compression?
Swift code compression reduces the file size of a Swift source file by removing characters that are not required for the code to compile and run correctly. This includes single-line comments (//), multi-line comments (/* ... */), documentation comments (/// and /** ... */), and excess whitespace. The swift compressor parses Swift character by character to correctly handle all Swift string types — including raw strings (#"..."#) and multi-line strings ("""...""") — before removing comments and whitespace.
How Our Swift Compressor Works
- Paste or Upload Your Swift Code:Enter your Swift source file into the input panel, or click "Upload .swift" to load a file. Click "Load sample" to try the compressor with a sample Swift class. The swift compressor accepts any valid Swift source code.
- Instant Browser-Based Processing:Click "Compress Swift" and the tool parses your code character by character, removing comments and collapsing whitespace — entirely in your browser. Your code never leaves your device.
- Copy or Download Output: Copy the compressed Swift code to clipboard with one click, or download it as a .swift file. The stats panel shows original size, compressed size, bytes saved, and lines removed.
What Gets Removed During Swift Compression
- Single-Line Comments: All
// ...comments are removed, including// MARK:section markers and inline comments. - Multi-Line Comments: All
/* ... */comments are removed. Swift supports nested block comments — the swift compressor correctly handles/* /* nested */ */without breaking. - Documentation Comments (optional):
///and/** ... */documentation comments are disabled by default to preserve API documentation and license headers. Enable this option for maximum compression. - Excess Whitespace: Multiple consecutive spaces and tabs are collapsed to a single space. Blank lines are removed. Trailing whitespace on each line is stripped.
Important Limitations
The swift compressor uses a character-by-character parser that correctly handles Swift's string types and nested comments. However, it does not perform full AST-level analysis — very complex macro expressions or unusual string interpolation patterns may produce unexpected results. Always test the compressed output before using it in production. The swift compressor is designed for code snippet sharing and size reduction, not as a replacement for Xcode's build optimisation pipeline.
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Frequently Asked Questions About Swift Compressor
A swift compressor removes comments and excess whitespace from Swift source files to reduce file size without changing the code's behaviour. Our free swift compressor online parses Swift character by character to safely handle all string types — including raw strings and multi-line strings — before removing comments and collapsing whitespace. It runs entirely in your browser with no server upload required.
Yes. Swift comments and whitespace have no effect on compilation — the Swift compiler ignores them completely. The compressed output is functionally identical to the original and will compile with the same result. Always test the compressed output before using it in production.
Absolutely. The swift compressor processes everything locally in your browser — your Swift code is never uploaded to any server and never leaves your device. Completely safe for proprietary iOS, macOS, and server-side Swift code containing sensitive business logic.
Yes — 100% free, forever. No signup, no account, no premium tier, no file size limits, and no ads. Compress Swift source files as many times as you need — completely free with no restrictions.
Yes. Unlike many simple regex-based tools, the swift compressor correctly handles Swift's nested block comments — for example, /* /* inner */ outer */ is treated as a single comment block. This is important because Swift is one of the few languages that supports nested block comments.
Yes. The swift compressor correctly identifies raw string delimiters (#", ##", ###", etc.) and never modifies their content. Raw strings can contain characters that look like comments — the compressor handles this correctly by tracking the raw string boundaries before processing.
Documentation comments are disabled by default because they often contain API documentation, parameter descriptions, and license headers. Enable "Remove documentation comments" only when compressing for internal use where documentation is not needed in the output.
Typical reduction is 20–50% for well-commented Swift files. Files with extensive documentation comments, MARK sections, and heavy indentation compress most. The stats panel shows the exact reduction percentage and lines removed for your specific file.
There is no artificial file size limit. The practical limit depends on your browser's available memory. For typical use cases — individual Swift source files, view controllers, service classes — the swift compressor handles them instantly.