URL Encoder / Decoder – Encode & Decode URLs Instantly
Encode special characters into percent-encoded URL-safe strings, or decode them back to readable text. Supports both encodeURIComponent and full URL encoding — all processed in your browser.
Input
Result
Encoded or decoded result will appear here.
Why Use Tools Oasis URL Encoder / Decoder?
Tools Oasis makes URL encoding and decoding effortless. Whether you're building API query strings, debugging URLs, or handling special characters in web development — this tool does it instantly, privately, and for free.
Speed of encoding
URL encoding is a pure text transformation — instant in-browser, no server needed, no data transmitted.
In-Browser Processing
All logic runs in JavaScript locally — zero server calls, zero latency from network round-trips.
Secure by Default
No logging, no telemetry, no account needed. Your code and data stay yours.
Works Offline
Once the page has loaded, every tool works without an internet connection.
Tools Oasis processes everything locally in your browser — but your ISP can still see which sites you visit. A VPN encrypts your entire connection for complete privacy.
Try NordVPN — Up to 75% OffFrequently Asked Questions
01 What is URL encoding?
URL encoding (also called percent-encoding) replaces unsafe or reserved characters in a URL with a percent sign (%) followed by two hexadecimal digits. This ensures URLs are transmitted correctly across the internet, since certain characters like spaces, ampersands, and special symbols have special meanings in URLs.
02 Why do URLs need to be encoded?
URLs can only contain a limited set of ASCII characters. Special characters like spaces, quotes, angle brackets, and non-ASCII characters must be encoded to be safely included in a URL. Without encoding, these characters could break the URL structure or be misinterpreted by browsers and servers.
03 What does %20 mean in a URL?
%20 is the URL-encoded representation of a space character. When you see %20 in a URL, it means there is a space at that position. Other common encodings include %26 for ampersand (&), %3D for equals (=), and %2F for forward slash (/).
04 Is URL encoding reversible?
Yes. URL encoding is fully reversible. You can decode any percent-encoded string back to its original text using the Decode button on this tool. The Auto-Detect feature can also automatically determine whether your input needs encoding or decoding.
05 Is this URL encoder/decoder free and private?
Yes. Tools Oasis URL Encoder/Decoder is 100% free with no signup required. All encoding and decoding happens locally in your browser — no data is sent to any server, stored, or tracked.