URL Encoder & Decoder Online
Encode or decode any URL or query string in seconds. This tool runs entirely in your browser — no data is uploaded or shared with any server.
URL Encoder & Decoder
Safely percent-encode or decode text strings locally without submitting data.
What is URL encoding?
URL encoding (also called percent encoding) converts special characters — like spaces, ampersands, and slashes — into a format that can be safely included in a URL. For example, a space becomes %20 and & becomes %26.
When do developers need URL encoding?
URL encoding is required when building query strings, passing parameters in GET requests, constructing redirect URLs, or embedding URLs inside other URLs. Without it, browsers and servers may misinterpret characters and break the request.
It's also useful when decoding URLs received from APIs or logs that contain percent-encoded strings you need to read.
How to encode or decode a URL
- Paste your URL or text into the input field
- Click Encode to convert special characters to percent format
- Click Decode to convert percent-encoded text back to readable form
- Copy the output with one click
Privacy-first URL encoding
URLs often contain sensitive data — auth tokens, private query parameters, or internal system paths. This tool encodes and decodes entirely in your browser, so nothing is ever transmitted. Safe to use with internal URLs, staging endpoints, or OAuth tokens.
Frequently Asked Questions
What is the difference between encodeURI and encodeURIComponent?
encodeURI encodes a full URL, leaving structural characters like / and ? intact. encodeURIComponent encodes everything, including those characters — ideal for encoding individual query parameter values.
Can I decode encoded query strings?
Yes. Paste any percent-encoded string and click Decode to read the original value.
Does this tool handle Unicode characters?
Yes. Non-ASCII characters like accented letters or emoji are encoded using UTF-8 percent encoding as per the URL standard.
Is this tool free?
Yes. No limits, no login, no cost.