URL Encoder / Decoder - Free Online URL Encode & Decode Tool

Input Text

Supports batch processing, one per line. Click button to encode or decode

Example: %E4%B8%AD%E6%96%87

Batch Results

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History

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Why Choose Our URL Decoder Tool?

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Real-time URL Decode

Enter URL-encoded strings and get real-time decoding automatically. No manual operation needed, what you see is what you get. Supports batch URL encode/decode processing.

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Batch URL Decode

Supports batch URL decode operations, one URL per line, complete all decoding at once. 10x efficiency improvement, ideal for processing large amounts of data.

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Dark Mode

Supports dark/light mode switching, adapts to different usage environments, protects your eyes, reduces visual fatigue.

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History Records

Automatically saves the last 20 URL decode records, review history anytime, no more repeated searching. Fast and convenient.

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Local Processing Only

All URL encoding and decoding operations are done locally in your browser. Data is never uploaded to the server, protecting your privacy and security.

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High Performance

Optimized algorithm supports processing long text and large amounts of URL-encoded data, smooth without lag, instant response.

URL Encoding/Decoding: Principles and Use Cases

URL Encoding (also known as percent-encoding) is the process of converting special characters into URL-safe formats. Since some characters in URLs have special meanings or cannot be properly handled by all systems, these characters need to be converted to percent-encoding format.

Comparison

Unencoded

URL Encoded

Space

(space)

%20

Chinese

中文

%E4%B8%AD%E6%96%87

Special Symbols

# $ & + , / : ; = ? @

%23 %24 %26 %2B %2C...

Common Use Cases

Web Development: Handling Chinese characters in URL parameter passing
API Calls: Building URL requests that comply with RFC 3986 standards
Data Exchange: Securely transmitting special character data in URLs
Search Engines: Parsing and understanding encoded parameters in URLs
Form Submission: Handling special characters in HTML forms

URL Decode FAQ

Q1: What is URL decoding? Why do we need it?

A: URL decoding is the reverse process of URL encoding. The URL standard only allows a subset of ASCII characters to be used directly in URLs. Chinese characters, non-ASCII characters, special symbols, etc. all need to be encoded before they can be correctly transmitted in URLs. Using a URL decode tool can restore encoded strings back to their original text.

Q2: What's the difference between URL decoding and URL encoding?

A: URL encoding (Encode) converts normal text into URL-safe format, e.g., converting "中文" to "%E4%B8%AD%E6%96%87". URL decoding (Decode) is the reverse operation, restoring encoded strings back to original text. This tool focuses on URL decode functionality.

Q3: Why is the decoded text still garbled?

A: This is usually because the character set used for encoding (e.g., UTF-8, GBK) is inconsistent with the character set used for decoding. Make sure the input URL-encoded string is based on UTF-8 encoding, which is the internet standard. We recommend using browser developer tools to check the encoding format of network requests.

Q4: Are there any limits on batch URL decoding?

A: Batch URL decode supports processing multiple lines of URL-encoded text simultaneously, with each line as an independent item. We recommend processing no more than 1000 lines at a time. If the text is too long, you may need to process it in batches for better performance.

Q5: Is my data secure?

A: Completely safe! Our URL decode tool is purely frontend-implemented, all URL decoding operations are done locally in your browser. Data is not uploaded to any server and cannot be accessed by anyone. After clearing browser cache, history records will also be cleared.

Q6: What character sets are supported for URL decoding?

A: The tool uses the browser's native decodeURIComponent function, which by default supports UTF-8 encoded URL decoding. This is the internet standard and is recommended. If you encounter encodings from other character sets (like GBK), please first confirm the encoding format of the source system.