Skip to main content
Hemiley
URL encoder and decoder online tool converting readable text and percent-encoded URL components

URL Encoder and Decoder Online for Free

Encode text for use in URLs and decode percent-encoded values into readable text. Convert query parameters, path components, callback values, and test strings without writing a script.

Browse all tools

Plain text / URL

Result

Result appears here

Why URL Encoding Is Necessary

URLs use reserved characters to separate schemes, hosts, paths, queries, fragments, and parameter pairs. When a data value contains spaces, ampersands, equals signs, slashes, non-ASCII text, or other special characters, it may be interpreted as URL structure instead of content.

Percent encoding represents certain bytes with a percent sign followed by hexadecimal digits. Correct encoding helps a value travel safely as a URL component, but encoding an entire URL when only one parameter should be encoded can also break the address.

How Hemiley Simplifies URL Encoding and Decoding

Choose Encode or Decode, enter the source value, and copy the converted result. Encoding converts characters that need representation in a URL component. Decoding turns valid percent sequences back into readable content.

The correct result depends on context. A query parameter value, path segment, full query string, and complete URL do not always use identical rules. The tool converts text but cannot determine how your framework, server, router, or third-party service expects every component to be handled.

Key Benefits

  • Two-way conversion

    Encode readable text or decode percent-encoded URL content from one workspace.

  • Special-character handling

    Convert spaces, symbols, and international text for supported URL contexts.

  • Query debugging

    Inspect encoded parameters when troubleshooting redirects, callbacks, and API requests.

  • Copy-ready output

    Move the result into source code, a browser address, an API client, or documentation.

  • No manual hexadecimal work

    Avoid calculating percent sequences character by character.

  • Browser-based workflow

    Complete common URL conversion tasks without installing developer software.

Who Uses This Developer Tool?

  • Web developers

    Prepare query values, path segments, redirect parameters, and callback URLs.

  • API developers and testers

    Inspect encoded request values and reproduce parameter-related errors.

  • SEO and analytics teams

    Review tracking parameters and encoded campaign values without altering the destination.

  • Technical support teams

    Decode links found in logs, tickets, and redirect chains.

  • Students

    Learn how reserved characters and percent encoding work in web addresses.

How to Encode or Decode a URL Value in 3 Steps

  1. 1

    Choose Encode or Decode.

    Select the direction required for the URL component or encoded string.

  2. 2

    Paste the value.

    Enter the query value, path segment, or percent-encoded text into the input field.

  3. 3

    Convert and verify.

    Copy the result and test it in the actual application or URL context.

Common Use Cases

  • Encode a search phrase before adding it as a query parameter value.
  • Decode a callback URL captured in an application log.
  • Inspect campaign parameters that contain spaces or international characters.
  • Prepare a nested URL used as the value of another redirect parameter.
  • Troubleshoot double encoding, such as a percent sign that has been encoded again.
  • Create clear encoded and decoded examples for web-development documentation.

Why Choose Hemiley?

Hemiley puts encoding and decoding side by side, making it easier to compare a readable value with the representation used in a URL.

The tool supports conversion and debugging, but it does not validate whether a destination is trustworthy, protect sensitive query data, or guarantee compatibility with every framework-specific routing rule.

Related Free Developer Tools

Frequently Asked Questions

It represents certain characters as percent followed by hexadecimal digits so they can be carried safely in a URL component.

Usually you encode individual component values, not every separator in the full URL. The correct approach depends on where the value is being inserted.

Different form and query-string conventions may represent spaces differently. Your framework or receiving service determines which form is expected.

Double encoding occurs when an already encoded percent sequence is encoded again, such as %20 becoming %2520.

No. Decoding only makes the content readable. It does not confirm that the link, destination, script, or parameter is trustworthy.

Sensitive values should generally be avoided in URLs because they may be recorded in logs, history, analytics systems, and referrer information.