URL Encoder & Decoder
Percent-encode or decode URLs and query strings safely.
Encode
Decode
How to Use URL Encoder & Decoder
- 1
Input Text
Paste or enter your content directly into the URL Encoder & Decoder input area.
- 2
Select Settings
Choose transformation options or conversion parameters with live updates.
- 3
Copy or Export
Copy the processed output to your clipboard or download it instantly.
About URL Encoder & Decoder
URL-encode or decode strings instantly in your browser. Free & private. This tool operates completely in your web browser. No text inputs are ever sent to remote servers or stored in any database, ensuring 100% data privacy for code, API payloads, or confidential documents.
Client-Side Privacy Guarantee
All text transformations run inside your browser tab. Zero server logging or tracking.
100% Private & Offline Capable
Executes locally via JavaScript. Your text never leaves your device.
Instant Real-Time Results
No network latency or server waits. See outputs instantly as you type.
Frequently Asked Questions
What is URL encoding?
URL encoding replaces unsafe characters with % followed by hex digits.
Is this URL Encoder & Decoder safe and private to use?
Yes. All processing happens 100% locally on your computer inside your web browser using client-side JavaScript. Your files and data are never sent to any external server.
Do I need to create an account or pay to use this tool?
No. All 60 tools on NS Ascertain Toolkit are completely free with no registration, no subscription, and no usage limits.
Does this tool work on mobile devices and Macs?
Yes. The tool runs on any modern browser including Chrome, Safari, Firefox, and Edge across Windows, macOS, iOS, and Android.