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JavaScript Encoder / Decoder

JavaScript Encoder / Decoder. Local browser processing.

Convert in your browser · No sign-up

JavaScriptAll encoding tools ↗

Wrap code as a Unicode-escaped eval string or decode literal eval/Packer wrappers without running code.

unicode / eval(string) / Dean Edwards Packer

Result

Add your input or load an example, then run the tool. Your result will appear here.

How to use

  1. Enter your data and parameters, or load the example.
  2. Choose the operation and confirm the input format.
  3. Run the tool, then copy or download the result.

Example

eval("\u0061"); → a

Details and limitations

Everything runs in your browser; text, files and keys are not uploaded.

Input is limited to 100,000 characters per field. Cancel stops the worker and discards the pending result.

Hashing is one-way. Encoding and obfuscation do not keep data secret.

FAQ

Are my keys or files uploaded?

No. Calculation happens locally in a Web Worker. Clearing or leaving the page discards its working state.

Format references

Tool page updated: