Free Online Developer Tool

URL Decoder

Decode percent-encoded URLs, query values and text instantly. Choose component or full-URI mode, copy readable output and download results directly from your browser.

Instant decoding Two decoding modes UTF-8 support Browser based

Decode URL & Text

Convert percent-encoded content into readable text

Encoded URL / Text Input

Paste, type, upload or drop encoded content

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Decoded Output

Readable decoded URL or text

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Ready to Decode

Enter percent-encoded content and click Decode URL.

Input Size

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Output Size

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Browser-Based URL Decoding

This implementation decodes URLs and text directly in your browser with JavaScript. Decoding, copying and size calculations do not require your input to be sent to a server.

Decoder Features

Decode URLs in Seconds

Convert percent-encoded URLs and text into readable output with browser-based processing.

Instant Decoding

Decode percent sequences into readable characters with one click.

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Two Modes

Use component mode or full-URI mode for different decoding contexts.

Input Validation

Detect malformed percent sequences before generating decoded output.

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Copy & Download

Copy decoded output or save it as a text file.

Three Simple Steps

How to Decode a URL Online

1

Enter Encoded Content

Paste an encoded URL or text into the editor, upload a file or drag and drop content.

2

Decode URL

Click Decode URL to validate the input and remove unnecessary formatting.

3

Copy or Download

Review the decoded output, copy it to the clipboard or download a text file.

URL Decoding Guide

What Is a URL Decoder?

A URL Decoder converts percent-encoded URLs and URI components back into readable characters. Encoded byte sequences such as %20 can be restored to their original text representation.

URL decoding is useful for inspecting query parameters, redirect URLs, API requests, analytics links and text containing encoded Unicode characters.

URL Decoding Example

Encoded input:

Hello%20World%20%26%20more

Decoded output:

Hello World & more

Why Decode URLs?

Encoded URLs can be difficult to read when spaces, symbols or international characters are represented with percent sequences. Decoding restores a human-readable representation for inspection and debugging.

The correct decoding function depends on whether the input is a complete URI or an individual encoded component such as a query parameter value.

How Does Percent Decoding Work?

Percent decoding interprets hexadecimal sequences that begin with a percent sign and converts them back into bytes and characters. For example, %20 represents a space in standard URI percent encoding.

UTF-8 percent sequences can represent Unicode and multilingual text. Malformed sequences may cause decoding errors and should be corrected before retrying.

decodeURI vs decodeURIComponent

Full URI Mode uses JavaScript's decodeURI behavior and is intended for complete URI strings where structural delimiters should remain meaningful.

Component Mode uses decodeURIComponent behavior and is appropriate for individual encoded values or URI components. It decodes a broader set of encoded reserved characters.

Common Uses for URL Decoding

Query Parameters

Restore readable parameter values from percent-encoded URLs.

API Debugging

Inspect encoded endpoint values and request parameters.

Redirect URLs

Read nested destination URLs stored inside callback parameters.

Unicode Text

Restore multilingual text represented by UTF-8 percent sequences.

FAQ

URL Decoder FAQs

A URL Decoder converts percent-encoded URLs and URI components back into readable characters.
Percent decoding converts hexadecimal percent sequences back into represented bytes and characters.
decodeURI is intended for complete URIs, while decodeURIComponent is intended for individual encoded components and decodes more reserved characters.
Yes. Valid UTF-8 percent-encoded sequences can be restored to readable Unicode text.
Yes. The URL Decoder is free to use online.

Decode URL & Text Now

Paste percent-encoded content and generate readable decoded output in seconds.

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