About this tool
Encode or decode URL components and inspect the supported query information. Review whether you are working with a complete URL or a component before placing the output into a route, parameter or document.
Calculations and file processing run in this browser tab. The tool does not send working inputs or files to our hosting server.
मुख्य इनपुट और नियंत्रण हिंदी में देखने के लिए ऊपर “🇮🇳 हिंदी में देखें” चुनें। गणना और फ़ाइल प्रोसेसिंग इसी ब्राउज़र टैब में होती है; टूल आपके इनपुट हमारी होस्टिंग पर नहीं भेजता।
Features
- Work with URL or Parameter Text.
- Mode: choose from Encode Component (encodeURIComponent); Decode URL (decodeURIComponent).
- Review Input Length; Output Length in the result breakdown.
Benefits
- Inspect escaped characters in a URL component.
- Compare a query-string draft with its readable values.
Who should use this tool?
- Developers preparing URL parameters.
- Editors inspecting a campaign-link example.
How to use
- Complete the labelled fields for your scenario, including URL or Parameter Text. Use the units shown beside each field.
- Choose Mode to match the situation you want to check.
- Select Calculate / Run Tool and review Percent-Encoded URL Component and Input Length; Output Length.
- Check the assumptions and limitations below. Adjust a value to compare scenarios, then copy or download the result you need.
Try these worked examples
| Scenario | Example inputs | Example result |
|---|---|---|
| Percent-Encode Query String with Spaces & % | URL or Parameter Text: GST Calculator India & slabs=18%Mode: Encode Component (encodeURIComponent) | GST%20Calculator%20India%20%26%20slabs%3D18%25 |
| Decode "GST%20Calculator%20India%20%26%20slabs%3D18%25" | URL or Parameter Text: GST%20Calculator%20India%20%26%20slabs%3D18%25Mode: Decode URL (decodeURIComponent) | GST Calculator India & slabs=18% |
Reference and processing
RFC 3986 URI Percent-Encoding Standard · Listed applicability: 2025-2026
Calculations and file processing run in this browser tab. The tool does not send working inputs or files to our hosting server.
FAQs
Does decoding a URL open or verify the website?
The tool transforms the supplied text. It does not verify the destination or establish that a decoded link is safe to visit.
Which inputs do I need for URL Percent-Encoder, Decoder & UTM Query Parameter Parser?
Use URL or Parameter Text; Mode. The built-in examples show how those fields fit together.
What should I check before using this result?
Handles malformed % sequences gracefully with a clear error message. Check the assumptions and output against your intended task before relying on the result.
What happens to the information I enter?
Calculations and file processing run in this browser tab. The tool does not send working inputs or files to our hosting server. Tool favourites save only tool IDs in this browser. Sharing sends the tool link, not your working values or files.