URLエンコーダー・デコーダー
Encode and decode URL components online while reviewing percent escapes, query parameters, and reserved characters. 日本語 locale.
Make HTML structure easier to inspect
This tool encodes text for use inside a URL component and decodes percent-encoded text back to characters. URL encoding pr...
Formatting is not HTML validation
Percent encoding represents a byte or character with a percent sign and two hexadecimal digits. Which characters are escap...
How to format HTML
- Choose encode or decode, enter one component, and inspect the result. Decide whether the input is a path, query value, fra...
- Choose encode or decode, enter one component, and inspect the result. Decide whether the input is a path, query value, fra...
Formatting method
- Read markup structure
The encoder converts characters outside the permitted set into percent escapes using a character encoding such as UTF-8. T...
- Apply indentation
The encoder converts characters outside the permitted set into percent escapes using a character encoding such as UTF-8. T...
- Preserve content
The encoder converts characters outside the permitted set into percent escapes using a character encoding such as UTF-8. T...
Exact parser recovery, optional-tag handling, whitespace policy, embedded-language behavior, and error wording should be c...
Read the formatted result
A correct result keeps delimiters that belong to the surrounding URL structure and escapes data characters that could be i...
よくある間違い
Common mistakes include encoding a full URL as one value, decoding too early, double encoding existing escapes, confusing ...
Common mistakes include encoding a full URL as one value, decoding too early, double encoding existing escapes, confusing ...
制限と特殊なケース
This tool does not resolve domains, validate server responses, sanitize HTML, or protect secrets. Different libraries appl...
This tool does not resolve domains, validate server responses, sanitize HTML, or protect secrets. Different libraries appl...
Examples
URL Encoder Decoder online — 1
Is URL encoding encryption?
Choose encode or decode, enter one component, and inspect the result. Decide whether the input is a path, query value, fra...
A correct result keeps delimiters that belong to the surrounding URL structure and escapes data characters that could be i...
URL Encoder Decoder online — 2
Should I encode a whole URL?
Choose encode or decode, enter one component, and inspect the result. Decide whether the input is a path, query value, fra...
A correct result keeps delimiters that belong to the surrounding URL structure and escapes data characters that could be i...
URL Encoder Decoder online — 3
Why does a space become plus?
Choose encode or decode, enter one component, and inspect the result. Decide whether the input is a path, query value, fra...
A correct result keeps delimiters that belong to the surrounding URL structure and escapes data characters that could be i...
URL Encoder Decoder online — 4
What is percent encoding?
Choose encode or decode, enter one component, and inspect the result. Decide whether the input is a path, query value, fra...
A correct result keeps delimiters that belong to the surrounding URL structure and escapes data characters that could be i...
URL Encoder Decoder online — 5
Can I decode twice?
Choose encode or decode, enter one component, and inspect the result. Decide whether the input is a path, query value, fra...
A correct result keeps delimiters that belong to the surrounding URL structure and escapes data characters that could be i...
URL Encoder Decoder online — 6
How are Unicode characters handled?
Choose encode or decode, enter one component, and inspect the result. Decide whether the input is a path, query value, fra...
A correct result keeps delimiters that belong to the surrounding URL structure and escapes data characters that could be i...
Frequently asked questions
Is URL encoding encryption?
No. URL encoding represents data for a specific component. Build and validate the complete URL with rules for its protocol...
Should I encode a whole URL?
No. URL encoding represents data for a specific component. Build and validate the complete URL with rules for its protocol...
Why does a space become plus?
No. URL encoding represents data for a specific component. Build and validate the complete URL with rules for its protocol...
What is percent encoding?
No. URL encoding represents data for a specific component. Build and validate the complete URL with rules for its protocol...
Can I decode twice?
No. URL encoding represents data for a specific component. Build and validate the complete URL with rules for its protocol...
How are Unicode characters handled?
No. URL encoding represents data for a specific component. Build and validate the complete URL with rules for its protocol...
Should slashes be encoded?
No. URL encoding represents data for a specific component. Build and validate the complete URL with rules for its protocol...
Does encoding make a URL safe?
No. URL encoding represents data for a specific component. Build and validate the complete URL with rules for its protocol...