Advanced Text & Code Minifier

It depends on how much whitespace and comments the original has. Typical ranges: Plain text with excessive spaces: 5-20% reduction. CSS stylesheets with comments and indentation: 20-50% reduction. JavaScript with comments, blank lines, and indentation: 30-70% reduction. HTML with indented structure: 15-40% reduction. The compression ratio shown after minification tells you the exact percentage for your specific input. Note: subsequent Gzip compression by web servers typically reduces code files by another 60-80%, so total size reduction on the wire is much higher.

Auto-detection inspects the pasted content or uploaded file extension to determine the code type. For file uploads, the extension (.js, .css, .html, .txt) is used directly. For pasted content, the tool scans for language-specific patterns: CSS curly braces and property declarations, HTML doctype and tag structures, JavaScript function/variable keywords. If the language is ambiguous, it falls back to plain text mode. You can always override the auto-detected type by selecting the language manually from the dropdown.

This Text Minifier handles plain text in addition to CSS, JS, and HTML — making it useful for compacting any whitespace-heavy content. The dedicated CSS/JS Minifier on this site is code-specific and includes beautification (reverse minification for debugging). Use the Text Minifier when you need to handle mixed content types or plain text. Use the CSS/JS Minifier when you need the beautify feature or want mode-specific processing without the plain text option.

Yes. The HTML minifier removes whitespace between HTML tags, inline whitespace in text nodes (collapses multiple spaces to one), and blank lines. It preserves the structure — tags, attributes, and content are not modified. However, whitespace inside <pre>, <textarea>, and <script> tags is significant and should be preserved; this tool's HTML mode attempts to protect these blocks. Test the minified HTML thoroughly before deploying if your template uses whitespace-sensitive elements or inline scripts.

Only whitespace is removed — all actual words, characters, and code tokens remain exactly as written. For plain text: multiple consecutive spaces are reduced to one, leading/trailing spaces on lines are removed, and blank lines are collapsed. For code: comments are removed and indentation is stripped, but variable names, string literals, and all code logic is preserved untouched. Always compare your output to the input to verify nothing unexpected changed.

Yes. Switch to "Upload File" mode and select a .js, .css, .html, or .txt file. The minified result appears in the output area and can be downloaded as a file with the same extension. The Download button preserves the original filename with a .min. prefix (e.g., style.min.css). You can also paste code directly into the input and copy the result — no file handling required.

No. All minification processing runs in your browser using JavaScript. Your text, code, and uploaded files never leave your device. This makes the tool safe for proprietary source code, configuration files with API keys, and any content you would prefer not to send over the network.