Question 1

What is URL encoding (percent encoding)?

Accepted Answer

URL encoding replaces unsafe characters in a URL with a percent sign (%) followed by two hexadecimal digits. For example, a space becomes %20 and an ampersand becomes %26. This ensures URLs are transmitted correctly across the internet.

Question 2

What is the difference between encodeURI and encodeURIComponent?

Accepted Answer

encodeURI encodes a full URL but preserves characters like :, /, ?, and # that have special meaning in URLs. encodeURIComponent encodes everything including those characters, making it suitable for encoding individual query parameter values.

Question 3

How do I decode a URL with percent-encoded characters?

Accepted Answer

Paste the encoded URL into this tool, select Decode mode, and click Decode. It instantly converts percent-encoded sequences like %20, %3A, and %2F back to their readable characters.

Question 4

Is my data sent to a server when using this tool?

Accepted Answer

No. All encoding and decoding happens directly in your browser using native JavaScript APIs. Your data never leaves your device.

Question 5

Can I encode or decode multiple URLs at once?

Accepted Answer

Yes. Switch to Bulk mode and paste multiple URLs, one per line. Each URL is encoded or decoded independently, and results appear in the same line order.

URL Encoder / Decoder

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