🔗 URL Encoding & Decoding Guide
URLs can only safely carry a limited set of characters. Spaces, ampersands, unicode symbols, and other reserved characters must be transformed before a link, query string, or API parameter can travel reliably across browsers, servers, and analytics tools. The MTKits URL Encoder / Decoder helps you do that instantly in your browser.
Short description
This tool converts plain text into URL-safe percent-encoded output, or reverses encoded strings back into readable text. It supports three practical modes: component encoding for query values, full URI encoding for complete links, and form-style encoding where spaces become plus signs.
What is a URL encoder?
A URL encoder takes characters that are unsafe or ambiguous in a URL and replaces them with percent-encoded sequences. For example, a space becomes %20, and & becomes %26.
Input: hello world & more
Output: hello%20world%20%26%20more
Encoding is not encryption. It does not hide meaning. It only makes text safe to place inside URLs, redirects, tracking parameters, and API requests.
What is a URL decoder?
A URL decoder reverses that process. It reads percent-encoded values such as %20 or %E2%9C%85 and turns them back into the original readable characters.
Input: hello%20world%26more%3D1
Output: hello world&more=1
Decoding is especially useful when debugging copied links, inspecting analytics payloads, or cleaning up encoded redirect URLs from logs.
How the tool works
Quick start: Paste your text, choose Encode or Decode, pick a mode, and copy the result. Everything runs locally in your browser.
- Open the URL Encoder / Decoder tool.
- Paste plain text or an encoded URL fragment into the input box.
- Select Encode to escape unsafe characters, or Decode to reverse percent encoding.
- Choose the encoding mode that matches your use case.
- Review the live output preview and copy the result.
Encoding modes explained
Component mode
Best for individual query values, path segments, and API parameters. Uses component encoding, which escapes nearly all reserved characters.
q=pdf tools → q=pdf%20tools
Full URI mode
Best when you need to encode a mostly complete URL while keeping structural characters such as :, /, ?, and# intact.
https://example.com/search?q=pdf tools
Form plus mode
Matches HTML form submissions andapplication/x-www-form-urlencoded behavior, where spaces are written as + instead of %20.
email=hello world → email=hello+world
Common use cases
- ✓Query strings: Encode search terms, campaign names, and UTM parameters.
- ✓Redirects: Build safe return URLs and callback links.
- ✓API debugging: Decode encoded payloads from logs or network tabs.
- ✓Analytics cleanup: Read encoded values from copied tracking URLs.
Encoder vs decoder: quick comparison
| Action | Purpose | Example |
|---|---|---|
| Encode | Make text safe for URLs | cat&dog → cat%26dog |
| Decode | Restore readable text | cat%26dog → cat&dog |
Tips
- Use component mode for single values inside a query string.
- Use full URI mode when the input already looks like a URL.
- Use form plus mode when matching HTML form or legacy backend behavior.
- If decoding fails, check for broken percent sequences or mixed encoding styles.
Ready to encode or decode?
Open the tool and transform your URL text in seconds.
Open URL Encoder / Decoder →