What this tool does
Encode, decode, and parse URL query strings online. Handle parameters safely without requesting the URL.
- Encode a query value containing spaces, Chinese characters, or punctuation.
- Decode a copied tracking URL for inspection.
- Parse repeated query parameters such as tag=a&tag=b.
URL Encoder and Decoder
Output will appear here.
When this tool is a good fit
URL Encoder and Decoder helps when you need encoded or decoded URL-safe text from text or URL components that need percent encoding or decoding. It is most useful for preparing query parameters, redirect values, API examples, campaign fields, and copied URL fragments. The notes below focus on the settings that matter, the checks worth doing before you export, and the limits that tend to cause mistakes.
- Takes text or URL components that need percent encoding or decoding.
- Lets you adjust encode or decode mode and whether the value is a full URL or a single component.
- Calls out what to review: spaces, reserved characters, double encoding, plus signs, and malformed percent sequences.
- Produces encoded or decoded URL-safe text.
- Fits common jobs such as preparing query parameters, redirect values, API examples, campaign fields, and copied URL fragments.
Example jobs
- Encode a query value containing spaces, Chinese characters, or punctuation.
- Decode a copied tracking URL for inspection.
- Parse repeated query parameters such as tag=a&tag=b.
How to use URL Encoder and Decoder
- Prepare text or URL components that need percent encoding or decoding.
- Set encode or decode mode and whether the value is a full URL or a single component before running the tool.
- Generate or process the result, then review spaces, reserved characters, double encoding, plus signs, and malformed percent sequences.
- Copy, export, or download encoded or decoded URL-safe text.
- Run a second pass if the destination system, document, or workflow has stricter requirements.
What to know before you use it
- Encoding uses browser URL component rules.
- Parse mode extracts the part after ? when you paste a full URL.
- The tool never opens or requests the URL.
- Encoding a full URL and encoding one query parameter are different operations.
- Decoding untrusted redirect targets can reveal nested URLs that need separate validation.
Checks and edge cases
- Encode parameter values before placing them after question marks or ampersands.
- Do not decode and follow suspicious URLs automatically; inspect them first.
How your data is handled
This tool works in your browser. Toolumina does not upload or keep the content you enter here.
FAQ
Does this visit the URL I paste?
No. It only processes the string locally.
Are duplicate query parameters preserved?
Yes. Parse mode lists every parameter occurrence.
What is the difference between + and %20?
%20 is percent encoding for a space. A plus sign is commonly used for spaces in query form encoding.