Form Data Encoder
Encode data in application/x-www-form-urlencoded format, the default encoding for HTML forms. Essential for POST requests and API integrations.
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Type:
Try:
0 chars
0 chars
URL Encoding Reference
→ %20
Space
& → %26
Ampersand
= → %3D
Equals
? → %3F
Question mark
/ → %2F
Forward slash
# → %23
Hash
+ → %2B
Plus
@ → %40
At sign
encodeURI vs encodeURIComponent
encodeURIComponent: Encodes all special characters including /, ?, &, =, #. Use for encoding URL parameter values.
encodeURI: Preserves URL structure characters (/, ?, &, =, #, :). Use for encoding entire URLs while keeping them valid.
encodeURIComponent("a=b&c=d") → "a%3Db%26c%3Dd"
encodeURI("a=b&c=d") → "a=b&c=d" (unchanged)
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Frequently Asked Questions
What is application/x-www-form-urlencoded?
It's the default encoding type for HTML forms. Data is encoded as key=value pairs separated by &, with special characters percent-encoded.
When is form encoding used?
Used when submitting HTML forms with method='POST' and the default enctype, or when making API calls that expect form-encoded data.
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