What is URL encoding?

URL encoding (also called percent-encoding) converts special characters into a format that can be transmitted in URLs. Spaces become %20, ampersands become %26, etc. This ensures URLs work correctly across different systems.

When should I use URL encoding?

Use encoding when including special characters in URLs, query parameters, form data, or API requests. Any character outside A-Z, a-z, 0-9, and a few safe symbols (- _ . ~) should be encoded.

What's the difference between encodeURI and encodeURIComponent?

encodeURI is for complete URLs and preserves protocol (://), slashes (/), and query strings (?&). encodeURIComponent is for individual URL components (like query values) and encodes almost everything. Use encodeURIComponent for safer, more thorough encoding.

Why do URLs need encoding?

URLs have reserved characters with special meanings: ? starts query strings, & separates parameters, # indicates fragments, / separates path segments. Encoding prevents these from being misinterpreted as structural elements.

What characters get encoded?

Spaces, punctuation, and non-ASCII characters are encoded. Common examples: space → %20, ! → %21, " → %22, # → %23, $ → %24, & → %26, + → %2B, / → %2F, : → %3A, ? → %3F, @ → %40.

Can I decode any URL?

Yes, as long as it's properly percent-encoded. Our decoder handles standard %XX format where XX is a hexadecimal value. It works with URLs from any source—browsers, APIs, databases, etc.

Why does my encoded URL look messy?

Encoded URLs appear cluttered because readable characters are replaced with % codes. This is normal and necessary for proper URL transmission. Browsers automatically decode them when displaying.

Is URL encoding the same as HTML encoding?

No. URL encoding uses %XX format for URLs. HTML encoding uses entities like & < > for HTML content. They serve different purposes and aren't interchangeable.

What about Unicode characters?

Unicode characters (emojis, accented letters, non-Latin scripts) are first converted to UTF-8 bytes, then each byte is percent-encoded. For example, "café" becomes "caf%C3%A9".

Can I encode/decode multiple URLs at once?

Process one URL at a time for accuracy. However, you can use the swap button to quickly toggle between encoded and decoded versions, and the history feature stores your recent conversions for reference.

URL Tools

URL Encoder & Decoder

Safely encode and decode URLs and components.

encodeURIComponent

Plain Text / URL

Encoded Result

How to use this tool

1
Choose encode or decode mode
Select whether you want to convert plain text to URL-encoded format (encode) or decode an encoded URL back to readable text.
2
Select encoding type
Choose "Component" (encodeURIComponent) for encoding individual URL parameters, or "Full URI" (encodeURI) for encoding complete URLs while preserving protocol and structure.
3
Enter your text or URL
Paste the content you want to convert. For encoding, enter plain text or URLs with special characters. For decoding, paste percent-encoded strings.
4
Process and copy
Click the arrow button to convert. Use the copy button to grab your result, or swap input/output to quickly convert back and forth.

Frequently asked questions about URL Encoder & Decoder

What is URL encoding?: URL encoding (also called percent-encoding) converts special characters into a format that can be transmitted in URLs. Spaces become %20, ampersands become %26, etc. This ensures URLs work correctly across different systems.
When should I use URL encoding?: Use encoding when including special characters in URLs, query parameters, form data, or API requests. Any character outside A-Z, a-z, 0-9, and a few safe symbols (- _ . ~) should be encoded.
What's the difference between encodeURI and encodeURIComponent?: encodeURI is for complete URLs and preserves protocol (://), slashes (/), and query strings (?&). encodeURIComponent is for individual URL components (like query values) and encodes almost everything. Use encodeURIComponent for safer, more thorough encoding.
Why do URLs need encoding?: URLs have reserved characters with special meanings: ? starts query strings, & separates parameters, # indicates fragments, / separates path segments. Encoding prevents these from being misinterpreted as structural elements.
What characters get encoded?: Spaces, punctuation, and non-ASCII characters are encoded. Common examples: space → %20, ! → %21, " → %22, # → %23, $ → %24, & → %26, + → %2B, / → %2F, : → %3A, ? → %3F, @ → %40.
Can I decode any URL?: Yes, as long as it's properly percent-encoded. Our decoder handles standard %XX format where XX is a hexadecimal value. It works with URLs from any source—browsers, APIs, databases, etc.
Why does my encoded URL look messy?: Encoded URLs appear cluttered because readable characters are replaced with % codes. This is normal and necessary for proper URL transmission. Browsers automatically decode them when displaying.
Is URL encoding the same as HTML encoding?: No. URL encoding uses %XX format for URLs. HTML encoding uses entities like & < > for HTML content. They serve different purposes and aren't interchangeable.
What about Unicode characters?: Unicode characters (emojis, accented letters, non-Latin scripts) are first converted to UTF-8 bytes, then each byte is percent-encoded. For example, "café" becomes "caf%C3%A9".
Can I encode/decode multiple URLs at once?: Process one URL at a time for accuracy. However, you can use the swap button to quickly toggle between encoded and decoded versions, and the history feature stores your recent conversions for reference.