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Alta
Free AI alt text generator for WCAG & EAA compliance
6 followers
Free AI alt text generator for WCAG & EAA compliance
6 followers
Generate WCAG-compliant alt text for any image in seconds with AI. Free tool for accessibility, SEO and the European Accessibility Act.
How well does it actually handle complex images like charts or infographics, and is there a limit on how many I can generate for free before hitting a paywall?
@msunar82939 Great questions, thanks for digging in.
On complex images: it does a solid job on straightforward charts — it picks up the axis labels, the trend and the main takeaway. But I'll be honest about the limit: for dense infographics with a lot of embedded text, it summarizes rather than transcribing everything. That's partly by design, since WCAG treats complex images as "short alt + a longer description nearby," and right now Alta only produces the short alt. A long-description mode for charts and infographics is the next thing on my list.On limits: Free is 5 images/day, no signup and no card, and it includes all 3 styles and all 7 languages. Pro is $29/year (one-time, not monthly) with unlimited generations and bulk upload of up to 50 images at once. There's no credit system, so nothing runs out in the middle of a project.
If you have an infographic where the output wasn't good enough, please send it my way — those are exactly the samples I want for tuning.
Tried it on a few product photos and the descriptions came out surprisingly specific, even mentioning colors and layout. Nice to see a free tool that takes accessibility seriously instead of just slapping on keyword filler.
@tlinsalcanhtuu This made my day, thank you. That's exactly what I was aiming for: the prompt is tuned around what a screen reader user actually needs to picture the image — what it is, what it's doing, the colors and layout that carry meaning — instead of stuffing keywords in for a crawler. There is an SEO style if you want it, but even that one is written to be read out loud first.
If you keep using it on product photos, I'd love to hear where it still falls short — that feedback shapes what I build next.
Super handy for blog posts, generated solid alt text for a few product shots I tested and saved me a chunk of time. Wish it handled complex infographics a bit better though.
@dogan6960 Really glad it's saving you time on blog posts — that's the use case I built it for.
And you're right about the infographics, that's the honest weak spot today. A single alt string was never going to carry a dense infographic, so I'm working on a mode that returns a short alt plus a longer structured description you can drop into a <figcaption> or a details block, which is what WCAG actually asks for on complex images.
Out of curiosity, what kind were they — data-heavy charts, or process/flow diagrams with lots of labels? The two fail in different ways and it would help me prioritize.