🔗 URL Encoder & Decoder
SolversPro URL Encoder & Decoder is a free web utility that escapes and decodes RFC 3986 percent-encoded uniform resource identifiers and individual query parameter components securely in your browser.
Plain Text / URL
Encoded URL
RFC 3986 Reserved Character Percent-Encoding Lookup
Standard hexadecimal escape substitutions for URI components and reserved characters:
| Raw Character | Percent Code | Character Name | Reserved Role in URI |
|---|---|---|---|
| (space) | %20 | Space | Invalid in raw URIs; encoded as %20 or + in forms |
| & | %26 | Ampersand | Query parameter delimiter |
| = | %3D | Equal sign | Key-value assignment delimiter |
| ? | %3F | Question mark | Query string initiator |
| / | %2F | Forward slash | Path segment separator |
| # | %23 | Hash / Number sign | Fragment identifier initiator |
encodeURIComponent
Encodes all special characters including / ? & = + # @. Use for encoding individual query parameter values.
encodeURI
Preserves URL structure characters like / ? & = + # @. Use for encoding a full URL while keeping its structure intact.
Frequently Asked Questions
What is the difference between encodeURI and encodeURIComponent?
encodeURI is designed for complete URLs and preserves structural delimiters like ':', '/', '?', '&', and '#'. encodeURIComponent encodes every reserved character into percent notation, making it safe for individual query parameter key-value pairs.
What happens if a URL contains non-ASCII or UTF-8 characters like emojis?
Both encodeURI and encodeURIComponent transform each multi-byte UTF-8 code point sequence into consecutive percent-encoded hexadecimal byte pairs (for example, the space character becomes %20).
How does URL decoding handle malformed percent sequences?
If a string contains an invalid escape sequence (such as a single '%' followed by non-hexadecimal characters), standard decode functions throw a URIError; this tool intercepts that error and provides a clear diagnostic warning.
Is any entered URL data transmitted across the network?
No. All percent encoding and decoding execute client-side in your local browser sandbox, protecting confidential API keys, tokens, and query strings.
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