PDFFileElement: signed property

Value

A string, or null when the file is not signed:

"pending"

The signatures are being checked.

"verified"

Every signature verified: intact, signed by a trusted signer, not revoked.

"unknown"

A signature could not be checked.

"untrusted"

A signer is not trusted: no trust anchors, or an unknown or self-signed issuer.

"expired"

A certificate was not valid at signing time.

"revoked"

A certificate was revoked.

"invalid"

A signature is broken or the signed part was changed.

The order from best to worst is verified, unknown, untrusted, expired, revoked, invalid. CSS sees the same value as a custom state, pdf-file:state(verified) and so on, while the element's attributes stay as written.

Examples

Warning about a broken signature

body:has(pdf-file:state(invalid)) .warning {
  display: block;
}

const file = document.querySelector("pdf-file");
file.addEventListener("verify", () => console.log(file.signed)); // "verified"

Specifications

Not part of any specification. <pdf-file> and <pdf-page> are autonomous custom elements defined by WebPDF.pro. It implements:

Browser compatibility

See also

• PDFFileElement.verify()
• verify
• States