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Ignores "alt" text on <object> element

See original GitHub issue

Provide the steps to reproduce

Run LH on https://pwa.cafe

What is the current behavior?

It fails, saying that <object> elements do not have [alt] text, put prints the failing element showing that it does indeed have an alt attribute with text.

https://twitter.com/lukeed05/status/1046462007841447936

Second Picture

What is the expected behavior?

It should be able to parse the alt text correctly since it exists.

Environment Information

Affected Channels: Chrome Extension
Lighthouse version: 3.2.0
Node.js version: N/A
Operating System: OSX

Issue Analytics

State:
Created 5 years ago
Comments:9 (4 by maintainers)

Top GitHub Comments

2reactions

patrickhulcecommented, Oct 1, 2018

I’m not an expert on the object element (as you note it’s rarely used these days 😉), but the linked axe docs from Lighthouse have this to say…

Add alternative text to all embedded object elements using either inner text, title attributes, aria-label or aria-labelledby.

It seems like screen readers expect alt text somewhere other than the alt attribute for the object element. If you think this is wrong, feel free to file an issue over in axe-core. We’ll pickup anything they change in the next version 😃

1reaction

paulirishcommented, Oct 1, 2018

I’m a little confused if this is a valid issue or if I should move the content within the tags.

not totally sure what you mean. afaik you have a few options with this svg

<img src="file.svg">
<img src="data:base64encodedsvg">
css background-image
<object data=file.svg>
inline SVG right inside the HTML

the and <object> options all require an alt attribute.

Personally I feel like inline SVG is the right semantic call here. it carries with it some other accessibility responsibilities (these probably?), but you’re luckily in that axe-core currently doesn’t inspect SVG, so it won’t be flagging things… for now. 😃

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