URL Encoder/Decoder
Encode and decode URLs with support for different encoding methods.
Best-fit workflows
Query-string preparation, redirect debugging, and safe URL component handling.
How to use this tool effectively
- Open the interactive UI and confirm expected input/output format hints.
- Encode only the specific URL component you need, not entire URLs by default.
- Run the transformation or validation, then compare output with an expected fixture.
- Copy, export, or chain the result into the next step of your workflow only after validation.
Practical example
Example: encode an OAuth state value containing JSON before appending to a login redirect.
Validation checklist
- Decode once and confirm the original semantic value is preserved exactly.
- Confirm character encoding and whitespace assumptions before concluding output is incorrect.
- Keep sample inputs reproducible so teammates can confirm the same result.
Edge cases to verify
- Space handling differs between `%20` and `+` depending on context.
- Double-encoding `%` sequences can break server parsing.
Quality and safety notes
Over-encoding can silently break callbacks and signature verification.