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URL Encoder/Decoder

LOCAL · Browser-Only

Encode or decode URL components for safe web usage

Encode space as +Each line separately

Encodes all special characters. Best for encoding query parameter values.

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Result

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What is URL Encoder/Decoder?

Free online URL encoder/decoder to encode special characters in URLs to their percent-encoded equivalents or decode percent-encoded URLs back to readable text.

URL encoding is essential for passing query parameters, encoding spaces and ampersands, building safe API requests, and submitting form data. Decode a percent-encoded URL to read it, encode a query string before appending it to an endpoint, or turn %20 back into a space. This tool handles all reserved and unsafe characters according to RFC 3986 standards, processing everything instantly in your browser. No signup required.

How to Use URL Encoder/Decoder

1Choose 'Encode' to convert text to URL-safe format, or 'Decode' to convert back
2Paste your text or URL-encoded string into the input field
3Click the Encode or Decode button
4Copy the result from the output area

Frequently Asked Questions

What is URL encoding?

URL encoding (also called percent-encoding) replaces unsafe ASCII characters with a '%' followed by their hexadecimal value. For example, a space becomes '%20' and an ampersand becomes '%26'. This ensures URLs are transmitted correctly across the internet.

When do I need to URL-encode text?

You need URL encoding when including special characters in query string parameters, form data, or any part of a URL. Characters like spaces, ampersands (&), equals signs (=), and non-ASCII characters all need encoding to avoid breaking the URL structure.

What is the difference between encodeURI and encodeURIComponent?

encodeURI encodes a full URL but preserves characters that have meaning in URLs (like ://?#). encodeURIComponent encodes individual URL components and also encodes those reserved characters. This tool uses encodeURIComponent, which is the safer choice for query parameters.

How do I decode a percent-encoded URL?

Switch to Decode mode and paste the encoded URL. The tool converts every %xx sequence back to its character, so %20 becomes a space and %26 becomes an ampersand, leaving you with the readable original.

Why does my decoded URL still show %25 sequences?

That usually means the URL was encoded twice (double-encoded). A literal percent sign becomes %25 on the first pass, then %2525 on the second. Decode once to peel off one layer, then decode the result again to recover the original.

Is my data sent anywhere when I encode or decode?

No. Encoding and decoding run entirely in your browser. The URLs and parameters you paste, which sometimes contain tokens or query data, are never sent to a server.

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Keep reading: Cron Expression Cheat Sheet and working without uploading reference. Doing this in code instead? See the tool chain endpoints.

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