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Developer tool

URL Encoder / Decoder

Quick answerThis tool encodes or decodes a URL component. Use it for query parameter values and other components rather than blindly encoding a complete URL.
How it works

How to use URL Encoder/Decoder

  1. 1Paste or type your content.
  2. 2Choose the required action.
  3. 3Review the output.
  4. 4Copy or download the result.

About URL Encoder/Decoder

Encode or decode URL components. Use it when you need the result without the overhead of opening a larger application. For anything important, compare the output with your source and keep the original until you are satisfied with the result.

Editorial note

Encode the value, not blindly the entire URL

Percent-encoding is meant to keep data characters from being mistaken for URL syntax. A query value containing spaces or & needs encoding; the structural ?, = and & around it usually do not.

Double-encoding is a common bug. If % becomes %25 repeatedly, inspect whether an already encoded value was passed through the encoder again.

A realistic example

Encode “red & blue” as a query parameter value before inserting it into the URL, then decode once to confirm the original value returns.

When this tool is not the right fit

Do not repeatedly decode untrusted URLs without understanding how the application will use the result.

Quick answer

What this tool does

URL encoding converts characters into percent-encoded form for safe use in URL components; decoding reverses that representation.

Common use cases

  • Encode query values
  • Inspect encoded URLs
  • Prepare redirect parameters
  • Debug web requests

Limitations

  • Encoding a full URL and encoding one query parameter are different operations.
Privacy & processing

Processed locally in your browser

For this tool, the selected input is handled in your browser. It is not intentionally uploaded to Get Tools Lab for the core operation.

Reviewed byGet Tools Lab editorial & engineering teamLast updated
Examples & test cases

Example results

hello world

hello%20world

a%2Fb

a/b

Troubleshooting

If the result does not look right

  • Avoid decoding repeatedly unless you know the value was encoded multiple times.
Verification record

Last tested: 2026-09-03

V50 deterministic render, static JS/control audit and responsive layout checks

  • ✓ PHP page renders without a fatal/parse error
  • ✓ Primary controls and labels are present
  • ✓ Invalid or missing input has a recoverable error path
  • ✓ Responsive layout checked at 390px and 1365px in V50 local QA
  • ✓ Keyboard focus and status region are available

Read the testing methodology

Trust, methodology & corrections

Get Tools Lab documents how tools are designed, reviewed and corrected. We do not claim external certification unless it is explicitly documented.

Questions people ask

Answers about URL Encoder/Decoder

What is URL Encoder/Decoder useful for?

Encode or decode URL components.

Can I use URL Encoder/Decoder with production data?

Use a small, non-sensitive sample first and verify the output against the format or application that will consume it. A formatter or converter can validate structure, but it cannot know every rule in your application.

What is a common reason to use URL Encoder/Decoder?

A common use is to finish the url encoder/decoder task quickly without opening a larger desktop application.

What should I watch out for when using URL Encoder/Decoder?

Check the input format and review the output before replacing an original file or using the result in an important workflow.

How do I get a better result with URL Encoder/Decoder?

Start with a clean input, use the simplest settings that meet your goal, and compare the result with the original before you download or reuse it.

Learn more

Related guides

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