URL Encoder Decoder converts URL text and components into readable or percent encoded values. Encode special characters, decode percent codes, and copy results for APIs, links, and debugging.
Encoding changes unsafe URL characters into percent codes. Decoding changes those codes back into readable text. This tool handles both tasks for URLs, query values, and URL components.
A URL Encoder Decoder converts URL text between readable and percent encoded forms. It helps developers prepare URL components and understand encoded values.
Type or paste the URL component or text you want to process.
Select Encode or Decode to instantly convert your input.
Copy your encoded or decoded result for future use.
Type or paste the URL component or text you want to process.
Select Encode or Decode to instantly convert your input.
Copy your encoded or decoded result for future use.
URLs use reserved and unreserved characters. Letters, numbers, and some symbols can appear directly. Other characters need percent encoding, such as spaces, ampersands, and Unicode characters. RFC 3986 defines these URL character rules.
Developers can handle URL encoding in JavaScript, Python, PHP, and Java. Common functions include encodeURIComponent(), urllib.parse.quote(), urlencode(), and URLDecoder. These functions help encode query parameters and decode URL values.
URL encoding changes characters into percent codes. URL decoding reverses that process and restores readable characters when the encoded value is valid.
URL Encoding | URL Decoding |
|---|---|
Converts readable text into encoded data | Converts encoded data into readable text |
Uses percent encoding | Removes percent encoding |
Spaces can become |
|
|
|
Helps prepare URL components | Helps inspect URL components |
Common before sending URL data | Common when reading received URL data |
Note: Encoding does not encrypt data. It only changes how characters appear so URLs can carry them safely.
URL encoding helps prevent special characters from breaking URL structure. It supports query parameters, API requests, redirects, form data, tracking links, and other web workflows. Decoding helps developers inspect and troubleshoot these values.
URL encoding replaces characters that need special handling with percent codes. For example, a space becomes `%20`, while an ampersand becomes `%26`.
Before encoding, a value may contain spaces or reserved characters that can affect URL structure. Example: `search tools & guides`
After encoding, special characters use percent codes. The same value becomes `search%20tools%20%26%20guides`, making it safer for a URL component.
URL decoding converts percent encoded values back into readable text. It helps developers inspect query parameters, redirects, logs, API data, and encoded links. This makes encoded information easier to understand.
encodeURI() and encodeURIComponent() serve different purposes. Use encodeURI() for a complete URL and encodeURIComponent() for one URL component.
encodeURI() encodes characters that could affect a URL while keeping key URL separators readable. Use it when you already have a complete URL structure.
encodeURIComponent() encodes a single URL component, including characters such as ?, &, and =. It works well for query parameter values.
Encode only the URL part that needs encoding. Use UTF 8 for text, avoid double encoding, validate decoded input, and choose encodeURI() or encodeURIComponent() correctly. Never treat URL encoding as encryption or a security method.
Use free developer tools for coding, formatting, encoding, debugging, and everyday web development tasks, all in one place today.
Use free developer tools for coding, formatting, encoding, debugging, and everyday web development tasks, all in one place today.
These answers explain URL encoding, percent codes, affiliate URLs, JavaScript functions, security, spaces, and common URL problems developers face.