LOCAL CODE OBFUSCATION

Obfuscate JavaScript and CSS

Make JavaScript harder to read with configurable obfuscation levels, or compact CSS and rename selected identifiers. Choose a light, balanced, or strong preset and adjust the transformations you need.

Paste code or open a local JavaScript or CSS file. Processing runs in your browser; source code is parsed as text, never executed, and never uploaded. Review, copy, or download the UTF-8 result.

Full mode is active — all options are available.

01 / OBFUSCATION LOCAL · NO UPLOAD

Choose the code type and obfuscation strength

Code type

Obfuscation strength

Strong settings can increase output size and slow down code at runtime.

Advanced settings

JavaScript syntax target Parse as an ES module (import / export) Generated identifier style Keep function and class names Move strings into a lookup array String array encoding Flatten control flow (strong; may slow execution) Inject dead code (larger output; test carefully) Split long string literals Rename global names (may break public APIs)

INPUT

Source code

📁 Open a local file File encoding

OUTPUT

Result

Paste source code or open a local file, choose a level, then run obfuscation.

Obfuscation is not encryption and cannot prevent reverse engineering. JavaScript output is not executed here. Test transformed code in the browsers and build setup you support.

ABOUT THIS TOOL

JavaScript and CSS obfuscation features

Make client-side code less readable and compact CSS without sending source files to a server. Obfuscation can make debugging harder, but it does not guarantee that code cannot be recovered.

JavaScript: rename local identifiers, encode string literals, split long strings, flatten control flow, and optionally convert syntax to ES5.
CSS: compact stylesheet syntax, remove regular comments, and optionally rename custom properties or keyframes used by animation declarations in this file.
Paste code or open a UTF-8 / Windows-1251 local file up to 1 MB. Cyrillic and English text are preserved.
Review output in the result pane, copy it, or download a .js or .css file.
Local Web Worker processing. Source files are not executed, transmitted, or stored by this tool.

Before using the result

Strong obfuscation can reduce performance, increase file size, or affect compatibility. Always test the output.