URL Encode/Decode

Escape/Unescape URLs

URL Encode/Decode

Escape/Unescape URLs

Input

Output

URL Encoder & Decoder

Encode or decode URL components (percent-encoding). Ensures special characters are safe for transmission in URLs.

How to Use

1. Paste text. 2. Click Encode or Decode. 3. Copy result.

Examples to try

Use these sample inputs and outputs with URL Encode/Decode.

-Example 1: Start with a small input to validate the format.
-Example 2: Try a real-world payload to confirm the output.
-Example 3: Compare the result against your expected structure.

Common pitfalls

Avoid these mistakes when using URL Encode/Decode.

-Mixing formats or encodings in a single input.
-Copying output without reviewing edge cases.
-Skipping validation before sharing the result.

Frequently Asked Questions

Why encode URLs?

URLs can only contain ASCII characters. Special characters must be converted to %xx format.

What can be encoded or decoded?

You can process full URLs or query strings.

Should I encode the whole URL?

Encode only components; keep scheme and host readable.

How are spaces encoded?

Use %20 for URLs; + is for form encoding.

About URL Encode/Decode

Use URL Encode/Decode to Escape/Unescape URLs. The tool runs in your browser for fast results and keeps your data local.

How to Use

1. Add your input or data.
2. Adjust options if needed.
3. Review the result and copy it.

What is URL Encoding?

URL encoding (also called percent-encoding) is a mechanism for converting characters into a format that can be safely transmitted in URLs. URLs can only contain a limited set of ASCII characters—letters, digits, and a few special characters like hyphens and underscores. Characters outside this set, including spaces, non-ASCII characters, and reserved characters like &, =, ?, and #, must be encoded as a percent sign followed by two hexadecimal digits representing the character code (e.g., space becomes %20). URL encoding ensures data integrity when passing information through URLs, query parameters, and form submissions. Different parts of a URL (path, query, fragment) have different encoding rules.

Common Use Cases

URL encoding is essential for web development and API integration. Frontend developers encode user input before adding it to query parameters to prevent breaking URLs with special characters. API developers encode path parameters and query strings to ensure proper data transmission. Search engines and analytics platforms rely on URL encoding to track search terms and campaign parameters containing spaces and special characters. OAuth and authentication systems encode redirect URLs and state parameters. Developers decode URLs to extract and display human-readable information from query parameters. Web scrapers and automation tools encode URLs when constructing requests programmatically.

Encoding user input for URL query parameters
Building API requests with special characters in parameters
Encoding search terms and filters in URLs
OAuth redirect URLs and state parameters
Encoding file names in download URLs
Decoding analytics and tracking parameters
Constructing URLs programmatically in scripts

Best Practices & Tips

Encode only the specific URL components that need encoding—do not encode the entire URL including the protocol and domain. Use the appropriate encoding function for each URL part: encodeURIComponent for query parameters and path segments, encodeURI for full URLs. Always encode user input before adding it to URLs to prevent injection attacks and broken links. When decoding, handle malformed encoding gracefully to avoid errors. Be aware that some characters like + have special meaning in query strings (represents space) and may need special handling. Double-encoding is a common mistake—ensure you encode only once.

Encode only URL components, not the entire URL
Use encodeURIComponent for query parameters
Always encode user input before adding to URLs
Decode URLs before displaying to users
Handle the + character correctly in query strings
Avoid double-encoding by checking if already encoded
Use UTF-8 encoding for international characters

Troubleshooting Common Issues

If URLs break after encoding, you may have encoded the entire URL including the protocol and slashes—only encode the data portions. If special characters still appear unencoded, ensure you are using the correct encoding function (encodeURIComponent, not encodeURI). Double-encoding occurs when encoding already-encoded strings, producing sequences like %2520 instead of %20—check if the string is already encoded before encoding again. If decoded text looks garbled, verify the character encoding is UTF-8. The + character in query strings represents a space in some contexts but a literal + in others—understand your system conventions.

Encoding the entire URL including protocol and domain
Using wrong encoding function (encodeURI vs encodeURIComponent)
Double-encoding producing %25xx sequences
Character encoding mismatches causing garbled text
Confusion between + as space vs literal plus sign
Not encoding user input leading to broken URLs
Decoding errors from malformed percent sequences

Frequently Asked Questions

Is URL Encode/Decode free to use?

Yes. URL Encode/Decode is free and works directly in your browser.

Does URL Encode/Decode upload my data?

No. Most processing happens locally. Any network requests are clearly indicated.

What formats does URL Encode/Decode support?

URL Encode/Decode supports the common formats described on the page. Convert uncommon formats before pasting.

How should I share results from URL Encode/Decode?

Copy the output and review any sensitive data before sharing or publishing.