
Between Facebookâs social network, Instagram, WhatsApp and Messenger, the company says its users share more than 2 billion photos each day. Thatâs a lot of content â and also a lot that visually impaired people donât get to see.
To that end, Facebook spent 10 months building image recognition tech to analyze and tag photos with descriptions of their contents â and itâs pretty damn accurate. It helps blind users by making these descriptions available to screen reading software so they can understand whatâs in the photos people have shared on their timelines and in their feeds.
You can now see just how good it is at recognizing people, objects, expressions, activities, events and spaces, thanks to a Chrome and Firefox browser extension built by California-based developer Adam Geitgey.

Install the extension, and itâll display tags that Facebook uses as alt text for photos shared by users across its site, as overlays on each image. Facebookâs tech can figure out how many people are sitting or standing in a picture, whether theyâre smiling or not, if the background is indoors or out, and whether thereâs a baseball game under way in the shot.
Whether youâre curious about how powerful Facebookâs image recognition engine is, or want to know how photos might be perceived by blind users on the social network, this is a neat tool to try out. The extension is available from the Chrome Web Store and the Firefox Add-ons site.
Get the TNW newsletter
Get the most important tech news in your inbox each week.