🛜 URL Encoder & Decoder

Encode plain text strings into RFC 3986 safe parameters, or decode percent-encoded URLs instantly.

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Free Online URL Encoder & Decoder Tool

    
Web URLs only support a limited set of ASCII characters. Special characters, spaces, symbols, and non-ASCII parameters must be converted into a standardized format to prevent browser redirection issues and request failures. Our free Online URL Encoder & Decoder Tool helps developers, marketers, and SEO specialists translate queries into safe web formats instantly.


    
Understanding Percent Encoding (RFC 3986)

    
Web servers use percent-encoding to represent reserved characters. When you run our URL Encoder, the tool replaces unsafe symbols with a percent sign (%) followed by their hexadecimal code (e.g., a space becomes %20, and ? becomes %3F). Conversely, our URL Decoder takes percent-encoded strings and translates them back to standard human-readable characters.


    
Key Use Cases

    
For SEO Specialists: Ensure URL slugs containing non-ASCII symbols are safe for search engine indexers and direct links.

    
For Digital Marketers: Build clean UTM campaign parameters to track marketing emails and social ads without breaking redirection links.

    
For Software Engineers: Safely pass variables, query strings, and payloads inside HTTP headers or API endpoints.


    
Privacy & Speed Guaranteed

    
Like all our tools, the URL Encoder and Decoder operates locally on your machine. Since the calculations use standard JavaScript functions, conversions happen instantly with zero network delay and complete security.



    



                                    

     
Frequently Asked Questions


     

                      

                 

                     

                         
                     

                     

                         

                             URLs are restricted to the ASCII character set. Special characters, spaces, and non-ASCII symbols must be encoded into percent signs and hexadecimal representations so browsers and web servers can interpret them correctly without breaking.
                         

                     

                 

             

                      

                 

                     

                         
                     

                     

                         

                             Yes. The URL encoding and decoding scripts run entirely on the client side in your browser, meaning none of your secret tokens or links are ever sent across the network.
                         

                     

                 

             

                      

                 

                     

                         
                     

                     

                         

                             Yes. In query strings, plus signs are often used to represent spaces. Our decoder automatically converts plus signs into standard spaces.
                         

                     

                 

             

                      

                 

                     

                         
                     

                     

                         

                             If the string has a broken percent sequence (e.g., an uncompleted percent sign or invalid hexadecimal), the tool will catch the error and display an alert explaining the problem.
                         

                     

                 

             

                      

                 

                     

                         
                     

                     

                         

                             Yes. The tool handles Unicode characters perfectly, transforming them into valid percent-encoded bytes.