Separate Missing Alt Attributes From Deliberately Empty Ones

How to Use This Tool

Count images, absent alt attributes and explicit decorative empty text. Audit pasted HTML image alt attributes locally and distinguish missing attributes from intentional empty alternatives.

The failure HTML Alt Audit is designed to catch

An empty alt attribute can correctly mark decoration, while a missing attribute provides no such accessibility decision. The boundary is the job stated in Separate Missing Alt Attributes From Deliberately Empty Ones; HTML Alt Audit is not intended to score or transform a different workflow.

The HTML Alt Audit input contract

The fields used for this specific operation are Input text, Unused option. Keep the source values beside the HTML Alt Audit result, because replacing the original would remove the evidence needed to reproduce or reverse the operation.

• For HTML Alt Audit, Input text starts at <img src="a.jpg"><img src="b.jpg" alt=""><img src="c.jpg" alt="Chart"> in the worked case; replace that example with the matching source value.
• For HTML Alt Audit, Unused option starts at in the worked case; replace that example with the matching source value.

Worked result for HTML Alt Audit

The executable case called Default browser-only example expects out: Images: 3 Missing alt: 1 Empty alt: 1. Verify that observation before entering real material, and then change one HTML Alt Audit field at a time so an unexpected direction or formatting change can be traced to a specific input.

Reading the HTML Alt Audit output

No. The transform runs in browser JavaScript and the page does not call a processing API. Network extensions or a compromised device remain outside this page's control. Apply that answer only when Input text, Unused option describe the same scope and format as the worked operation. If the source uses different units, quoting, nesting, timing or account rules, a plausible-looking HTML Alt Audit output is not sufficient validation.

Assumptions attached to HTML Alt Audit

• HTML Alt Audit assumes that the pasted input uses the syntax described by the selected standard or page guidance.
• HTML Alt Audit assumes that the operation is intentionally narrow and does not infer private downstream schema rules.

If one of these HTML Alt Audit assumptions is false, keep the result as a diagnostic rather than production or decision data, and choose an implementation that explicitly supports the missing rule.

Evidence maintained for HTML Alt Audit

The recorded reference is WHATWG HTML Living Standard. Reopen that source when the definition, format, fee or policy behind HTML Alt Audit changes; private configuration and downstream acceptance still have to be checked in the user's own system.

Where HTML Alt Audit runs

The named operation executes in browser JavaScript without an ecech calculation API. For HTML Alt Audit, local execution reduces transmission but does not control browser extensions, device security or the destination where the result is pasted, so sensitive inputs still require the user's normal handling rules.