URL Encoder and Decoder

About URL Encoder and Decoder

Special characters in URLs, such as spaces, ampersands and non-English letters, must be encoded so browsers and servers read them correctly. This tool encodes or decodes text as a URL component or as a full URL. Developers and marketers use it for query strings, redirect links and tracking parameters. Everything runs in your browser.

Example

Input: "summer sale & discounts" with Encode component. Output: summer%20sale%20%26%20discounts.

Tips for better results

• Encode only the parts that need it, such as parameter values, not the whole link structure.
• If decoding fails, the text may contain a stray percent sign.
• Never place secrets in URLs.

When to use URL Encoder and Decoder

This tool is for anyone working with links that carry parameters, such as marketers, developers, analysts and support staff. Use it when a link contains spaces, accented letters or symbols, when a redirect parameter needs to be nested inside another URL, or when you receive a messy link full of percent codes and want to read it. Paste the text, choose encode or decode and copy the result. Everything runs in your browser.

Real-world uses

• A marketer adds a campaign name with spaces and an ampersand and encodes it so the tracked link does not break.
• A developer decodes a long redirect link from a log file to see which page the visitor actually requested.
• An analyst cleans a list of search terms copied from a report where each spaced word appears as a percent code.
• A support agent encodes a customer's name containing accents before placing it into a prefilled form link.

Common mistakes to avoid

• Encoding an entire link with the component option also converts slashes and colons, which breaks the address, so encode only the value.
• Decoding twice can damage text that legitimately contains percent signs, so decode once and check the result before decoding again.
• Pasting links that already contain codes and encoding them again produces double encoding, so decode first if you are not sure.

Encode or decode URLs and query strings safely. It works instantly in your browser, so there is nothing to install and nothing to upload. URL Encoder and Decoder is part of our collection of 100 free tools in the SEO & Website category.

How to use it

1. Enter your information or choose a file in the tool above.
2. Your result appears right below the tool.
3. Copy the result, or adjust your input and try again.

Frequently asked questions

When should I choose component encoding?

Use it for a single value, such as a search term or redirect address that goes inside a parameter. It encodes reserved characters like slashes, question marks and ampersands.

Why does my decoded text look odd?

The original may have used a different character set, or it may have been encoded twice. Try decoding once more, or check whether a plus sign was meant to be a space.

Is URL Encoder and Decoder free to use?

Yes. URL Encoder and Decoder is completely free and you do not need to create an account.

Is my data uploaded anywhere?

No. This tool runs in your browser, so what you type or choose stays on your device.

How accurate are the results?

Calculations use standard formulas, but always double-check important figures, especially for money, health or legal decisions.