URL Encoder / Decoder
Encode or decode URL strings and components. Automatically parses URL structure.
What is URL encoding?
Special characters like spaces, &, =, ? must be converted to %XX format for a URL to be valid. For example, a space becomes %20.
When to use it?
When sending data through a URL query string, when building API calls, or when copying a URL with special characters from the browser address bar.
URL Encoder and Decoder β Complete Solution for URL Handling
This online URL encoder and decoder tool lets you easily convert text strings into URL-safe formats and decode them back. Whether you are working on web development, API integrations, or just need to decode query parameters from an address bar β this tool provides a fast and reliable way to work with URLs. The additional URL parser feature breaks down a URL into protocol, domain, path, query parameters, and fragment.
π How to Use the Tool Step by Step
1. Select the mode: Encode, Decode, or Parse URL.
2. Enter text in the input field (e.g., "hello world!" for encoding or "hello%20world%21" for decoding).
3. The result updates automatically as you type β no extra clicks needed.
4. Copy the output with one click on the "Copy Result" button.
5. In Parse URL mode, the tool automatically displays the URL structure (protocol, domain, path, all query parameters).
6. Swap fields to quickly switch input and output values.
𧩠What is URL Encoding and Why It Matters
URLs (Uniform Resource Locators) can only contain certain ASCII characters. Special characters like spaces, &, #, %, ? must be encoded using % followed by a hexadecimal value to avoid breaking the URL structure. For example, a space becomes %20, and # becomes %23. Browsers automatically encode form data and JavaScript API calls, but manual encoding/decoding is often needed when parsing URL parameters. This tool handles both directions using standard JavaScript functions encodeURIComponent() and decodeURIComponent(), ensuring accurate conversion.
π URL Parsing: Understanding URL Components
Enter a URL (e.g., https://devtet.rs/tools?q=url#top) and the tool breaks it down into:
β Protocol: http, https, ftp
β Domain: hostname (e.g., devtet.rs)
β Port: if specified, otherwise default
β Path: part after the domain (e.g., /tools)
β Query string: part containing ? and parameters
β Fragment: part after #
β Query parameters: each key=value pair displayed separately. This is extremely useful for debugging API requests, analyzing URLs, and understanding how applications handle data.
π‘ Common Use Cases
- Frontend Development: generating dynamic links with parameters containing spaces or special characters.
- Backend Integration: decoding URL data before processing.
- SEO & Marketing: creating clean URLs with properly encoded tracking parameters (UTM codes).
- Educational: understanding how encoding works in web technologies.
βοΈ Technical Details β How It Works
The tool uses built-in JavaScript methods:
β encodeURIComponent() to encode all reserved characters except letters, digits, and a few safe characters (-_.!~*'()).
β decodeURIComponent() to decode encoded strings, automatically converting + (sometimes used for spaces) back to space.
β URL constructor to parse and separate URL components, ensuring compliance with web standards.
Frequently Asked Questions (FAQ)
Does the tool work with non-ASCII characters (e.g., Latin and Cyrillic)?
Yes, all characters outside the ASCII range are encoded into multi-byte sequences (%C4%87 for Δ, %C5%A1 for Ε‘, etc.). Decoding accurately restores the original text.
Why does the parser show "none" for the query string when my URL contains a question mark?
The URL parser uses the standard URL constructor. If you enter a relative path without a protocol, the tool prepends "https://" so parsing works correctly. Make sure the URL includes a question mark and valid parameters (e.g., https://example.com?key=value).
Can I encode the entire URL including protocol and domain?
Technically yes, but itβs uncommon because encoding the protocol and domain can break the URL. Typically, only path and parameter values are encoded. The tool allows full URL encoding if needed.
Why do I get "invalid encoded string" in decode mode?
This means the input contains invalid % sequences (e.g., %2 or %GG). Ensure the string is properly encoded using standard methods.
Does the tool save previous conversions?
No, the tool does not store any data on the server or use cookies. Everything runs locally in your browser, ensuring privacy and speed.