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HTML Attribute Encoder

Developer

Encode HTML attributes for safe use inside element tags and values.

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HTML Attribute Encoder

Safely encode or decode strings for use in HTML attributes.

A double quote sitting inside a value meant to go into an HTML attribute doesn't stay part of that value, it closes the attribute early and breaks the rest of the tag, a different and more specific problem than encoding regular text content between two tags. This tool encodes HTML attributes for safe use inside element tags and their values, handling that attribute-closing character specifically rather than only escaping content the way a general HTML encoder would.

See more about the HTML Attribute Encoder

Useful for safely inserting a user-submitted string containing a quote character into a title or an alt attribute without breaking the surrounding tag, encoding a value for a data attribute that might contain special characters, or preparing dynamic content to be safely interpolated into an attribute value inside a template.

Key features

  • Clean interface
  • Fast processing
  • No signup required
  • Works offline

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Quick answers for HTML Attribute Encoder

Which characters does it encode?
Ampersand, double quote, single quote, less-than, and greater-than, the five characters that can break out of an HTML attribute value.
Can it also decode?
Yes, a Decode mode reverses the same five entities back into their original characters.
Why not just use JavaScript's built-in encoding?
Attribute encoding has different rules than URL or HTML-body encoding, since a single quote or double quote inside an attribute value needs escaping that those other encoders don't apply.