Firefox 130 introduces automatic alt text for PDF images and an improved alt text flow. In addition to protecting users’ privacy with a small langua

Help us improve our alt text generation model

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2024-11-06 23:30:03

Firefox 130 introduces automatic alt text for PDF images and an improved alt text flow. In addition to protecting users’ privacy with a small language model that operates locally on their device, these improvements help ensure more images receive alt text resulting in more accessible PDFs. 

You can read more about our work on the model in the earlier Hacks blog post Experimenting with local alt text generation in Firefox. 

The work on the model happens outside of the mozilla-central code base, but as with the rest of the Firefox code, we want to keep the process open to our community. The language models used in our product are just weight files, and we want to ensure the Mozilla community understands how it was built and can help improve it. The open source AI definition from OSI is a work in progress, and our long-term aspiration is to follow the OSI’s guidelines for our local models.

The first version of the model is a work in progress, and it will make mistakes, especially when describing complex images. This is why we designed the feature to:

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