URL Encoder / Decoder

Q: What's the difference between the two encoder modes?

encodeURIComponent encodes everything including ?, &, / for query parameters. encodeURI preserves URL structure.

Q: Is my data uploaded anywhere?

No. All encoding and decoding is done client-side. Zero server uploads.

Encode and decode URL components — perfect for query string manipulation

Method

Input Text

Encoded (Component)

💡 Encodes special characters including ?, /, &, =, #, spaces and Unicode

About This Tool

URL encoding (also known as percent-encoding) converts special characters into a format that can be safely transmitted in URLs. This free online URL encoder/decoder handles both encoder modes — for query parameters and for full URLs — with instant bidirectional conversion.

Essential use cases include encoding user input before appending it as URL query parameters, decoding URLs from web server logs for inspection, handling non-ASCII characters in internationalized URLs, and preparing data for REST API calls that include special characters.

The tool provides two encoding modes: encodeURIComponent for query parameters (encodes everything including ?, &, and /) and encodeURI for full URLs (preserves structural characters). A convenient swap button lets you quickly switch between encoder and decoder modes.

Frequently Asked Questions

What's the difference between the two encoder modes?

encodeURIComponent encodes everything including ?, &, /, = for query parameters. encodeURI preserves URL structure characters for encoding full URLs.

Does it support non-ASCII characters?

Yes, it handles all Unicode characters including Chinese, emoji, accented letters, and special symbols.

Is my data uploaded anywhere?

No. All encoding and decoding is done client-side using JavaScript's built-in encodeURIComponent() and decodeURIComponent(). Zero server uploads.

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