What is this tool?
The URL Encoder / Decoder converts text into URL-safe characters and turns encoded URL text back into readable form. It is commonly used for query strings, redirect URLs, and API request parameters.
When a URL contains spaces, Khmer text, symbols, or nested links, encoding helps browsers and servers read the value correctly.
Why use this tool?
- It prevents broken links caused by spaces or special characters.
- It helps inspect encoded query strings during debugging.
- It is useful for redirect URLs, tracking links, and API parameters.
- It can show decoded query parameters in a more readable way.
- It helps developers avoid manual percent-encoding mistakes.
How to use it
- 1
Open the URL Encoder / Decoder.
- 2
Paste the text, URL component, or query string into the input.
- 3
Click Encode when preparing text for a URL.
- 4
Click Decode when reading an encoded value.
- 5
Review decoded query parameters if the input contains them.
- 6
Copy the result into your link, request, or debug note.
Common use cases
- A developer encodes a redirect URL before adding it to an OAuth flow.
- A marketer checks a campaign URL with Khmer text in query parameters.
- A QA tester decodes a long tracking link to understand each parameter.
- A backend developer checks whether callback parameters are being sent correctly.
- A support team reads a broken customer link before reporting it to developers.
Tips and best practices
- Encode only the component that needs encoding, not always the entire URL.
- Decode suspicious links carefully before opening them.
- Watch for double encoding, where percent signs are encoded again.
- Keep parameter names clear so decoded query strings are easy to read.
- Use HTTPS links when sharing real customer or payment URLs.
FAQ
What does URL encoding do?
It converts characters such as spaces and symbols into a format that can travel safely inside URLs.
When should I decode a URL?
Decode when you need to read an encoded parameter, redirect value, or tracking link.
Can I encode Khmer text in a URL?
Yes. Non-English text can be encoded so it works correctly in a URL.
What is double encoding?
Double encoding happens when an already encoded value gets encoded again, often making links fail.
Is this useful for APIs?
Yes. URL encoding is common for query parameters and callback URLs in web APIs.