CometWeb tools
JavaScript code obfuscator online — obfuscate JS locally
JavaScript code obfuscation online · your code stays local in the browser
Obfuscation can discourage casual copying and increase reverse-engineering effort. The result is still client-side code that a user can inspect; it does not protect secrets, replace server-side authorization or fix security vulnerabilities.
These transforms are text heuristics, not a JavaScript parser: console calls inside an expression become void 0 instead of disappearing, and quotes in comments or regex literals can still be misread. The output may parse and still behave differently from the original — test it before you ship it.
Before you download: do not put API keys, passwords or tokens in client code. Authorization and secrets belong on the backend — obfuscation does not protect them.
A JavaScript code obfuscator online changes selected client-side patterns locally to make quick reading harder. It is not encryption and does not protect secrets, API keys or server authorization.
Why obfuscation is not encryption
Obfuscation buys time, not secrecy. It slows down a casual read in DevTools, but a determined reader will recover the logic — deobfuscators are public and free.
Sensible uses: business-logic friction (pricing, coupons), scraping friction. API keys still belong on the server.
Bad uses: hiding malware, dodging ad blockers, or hiding trackers from users.
Test behavior after transformation
Keep the original file and run tests on the output. Check error handling, console messages and calls from other scripts. Successfully generating code does not prove that the application behaves as before.
Obfuscation techniques
- MMangling
- Rename variables and functions to opaque ids (e.g. _0x4a2f). Simplest technique.
- SString encoding
- Strings as \x6a\x61\x6e (hex) or Base64 so literals are less obvious.
- DDead code injection
- Inject never-run code to grow size and muddy control flow.
- CFControl flow flattening
- Turn if/while into switch + state table. Can slow execution.
Paste JavaScript, choose string encoding or console removal, then copy or download the result. The obfuscation runs locally in your browser and makes quick reading harder; it is not encryption.
A JavaScript code obfuscator changes selected code patterns to make quick reading in the browser harder. It does not hide client-side code, protect API keys or replace server-side authorization and security controls.
Yes. This obfuscator runs in your browser and does not upload pasted code to CometWeb. The output remains client-side code, so anyone using the page can still inspect and analyze it.
No. Keys belong on the backend or as short-lived session tokens.
Mangling is negligible. String encoding is small. Control-flow flattening can be much slower.
String encoding can be reversed, and client-side code can always be analyzed in the browser. This tool adds friction to quick reading; it is not encryption or secret protection.
What else might come in handy
TLS, headers, cookies and exposure — with a score breakdown and a remediation plan.