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Developer Tools

URL Encoder/Decoder

Encode and decode URL strings instantly. Perfect for handling special characters in URLs and query parameters

Free · No sign‑up Added Jun 2026

URL Converter

About URL Encoder/Decoder

URLs can only contain a limited set of characters. Spaces, accented letters, symbols such as & and ?, and non-English text must be written as percent codes, like %20 for a space. This tool encodes text so that it is safe to use as part of a URL, and decodes percent-encoded text back to normal.

It uses the same encoding as the encodeURIComponent function in JavaScript. Letters, digits and the characters - _ . ! ~ * ' ( ) are left as they are, and everything else is converted, including / ? & = # : and spaces. That makes it right for a single value, such as a query parameter, but not for a whole URL, because the slashes and question marks that give the URL its structure would be encoded too.

When decoding, a plus sign is not turned into a space. Plus signs mean a space only in form-encoded data (application/x-www-form-urlencoded), and in that case replace the + signs with spaces first. Text with a broken percent sequence, such as %E0%A4%A, cannot be decoded and shows an error.

Who uses it and when

Query parameters

Encode a value before adding it to a link.

Reading encoded links

Decode a long %20-filled URL to see what it says.

Non-English text

Encode Arabic, Urdu, Chinese or accented text for use in a URL.

Debugging redirects

Check what a callback or redirect parameter really contains.

Why use this URL Encoder/Decoder

Percent-encode and decode text for URLs.

Encode and decode

Two boxes, two buttons, instant results.

UTF-8 aware

Works with any language and emoji.

Private

Runs in your browser.

How it works

Enter your text

Plain text to encode, or encoded text to decode.

Click Encode or Decode

The result appears below.

Copy it

Use the Copy button.

Frequently asked questions

Should I encode a whole URL?

No. This encodes everything including / and ?. Encode only the values that go inside the URL.

Why does a space become %20 and not +?

%20 is the standard in URLs. The + form is only used in form submissions.

Does decoding turn + into a space?

No. Replace the + signs with spaces first if the text came from a form.

Why do I get an invalid string error?

The text has an incomplete or invalid percent sequence.

Overview

What Is URL Encoder/Decoder?

Encode and decode URL strings instantly. Perfect for handling special characters in URLs and query parameters

User Guide

How To Use URL Encoder/Decoder

  1. 1 Open the URL Encoder/Decoder interface in your desktop or mobile browser.
  2. 2 Input or upload your source data, file, or parameters into the designated workspace fields.
  3. 3 Adjust any optional configuration settings or conversion toggles according to your requirements.
  4. 4 Click the primary action button to generate your output instantly.
  5. 5 Copy the resulting text, code snippet, or formatted file directly to your clipboard or local device.
Capabilities

Key Features of URL Encoder/Decoder

100% Free & Unlimited Usage

No registration, subscriptions, or hidden limits. Process as many files or items as you need.

Privacy-Focused Processing

All operations execute locally in your client web browser. Your sensitive files and data never touch external servers.

Cross-Platform Compatibility

Fully responsive design optimized for desktop workstations, laptops, tablets, and smartphone displays.

Instant Real-Time Output

Zero server queuing delays. Results are calculated and rendered immediately upon user input.

Client-Side Privacy & Security Guarantee

Your privacy is our priority. URL Encoder/Decoder executes processing entirely within your browser environment. Your input data, text, files, and credentials are never transmitted to external servers or stored in remote databases.

FAQ

Frequently Asked Questions

What is URL Encoder/Decoder?
Encode and decode URL strings instantly. Perfect for handling special characters in URLs and query parameters
Is URL Encoder/Decoder free to use?
Yes, URL Encoder/Decoder is completely free. There are no hidden charges, no subscription, and no credit card required. Just open the tool and start using it instantly.
Do I need to create an account to use URL Encoder/Decoder?
No account or signup is required. You can use URL Encoder/Decoder immediately without registering. Just visit the page and the tool is ready to use.
Does URL Encoder/Decoder work on mobile and tablet?
Yes, URL Encoder/Decoder is fully responsive and works on all modern devices including smartphones, tablets, and desktops. Any up-to-date browser is supported.
Does URL Encoder/Decoder process my data on a server?
No. URL Encoder/Decoder runs entirely in your browser using JavaScript. Your code and data are never sent to or stored on any server, keeping your work private and secure.
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