English interface

URL component encoder and decoder

Percent-encode or decode one URI component locally.

ReviewedGeneral utility
Saves this tool's name on this device only (up to 20). No form values.
Only visible result text is included. Form fields are not read. Review sensitive values before sharing.

Processed locally. This treats the input as one URI component, not as a complete URL.

Enter values, then process to see the result.

How to use it

  1. Choose encode or decode.
  2. Enter one component value.
  3. Process and copy the reviewed output.

Important limitation

Treats all input as one component. Parse complete URLs and encode their individual values instead of encoding a whole URL blindly.

The interactive form is fully localized in English.

Reviewed 2026-09-09; next review 2027-09-09.

Core calculations, cited sources and main examples have been reviewed within the stated scope.

Recorded updates

Review history

Site changelog

Dates describe the review scope recorded below. A page update does not mean every source was checked again.

  1. Last recorded source/method review

    Core calculations, cited sources and main examples have been reviewed within the stated scope.