WEBVTT

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Why does a copied website address sometimes contain percent signs?

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Percent encoding represents certain URL characters using encoded byte values.

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Keep the meaning of the URL component intact.
6 URL-encoding basics.

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Recognise the percent pattern
A percent sign followed by two hexadecimal digits represents an encoded byte.
Percent sign · Two hexadecimal digits · Encoded byte

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A space can become %20
Space handling depends on the URL or form-encoding context.
Space character · Percent-encoded space · Encoding context

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Some symbols are separators
Characters such as question marks and ampersands can have structural roles.
URL structure · Reserved symbol · Component meaning

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Encode values appropriately
A value containing a reserved symbol may need encoding within its component.
Individual value · Correct component · Preserved meaning

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Avoid encoding it twice
An already encoded percent sign can be encoded again and change the result.
Original value · Existing encoding · Unexpected double encoding

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Check the resulting link
Use suitable URL tools and verify the page receives the intended value.
Generated address · Expected value · Correct destination

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Your checklist
Recognise the percent pattern · A space can become %20 · Some symbols are separators · Encode values appropriately · Avoid encoding it twice · Check the resulting link

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Use the right URL tools and test the resulting destination.
jerseyweb.je