A full-site accessibility overlay; AI alt text is one feature gated behind paid tiers.
A full-site accessibility overlay; AI alt text is one feature gated behind paid tiers.
| Alta | UserWay | |
|---|---|---|
| Category | Standalone alt text generator | Accessibility overlay widget |
| Price | Free (5 images/day) or $29 one-time/year for Pro | Widget Pro from $69/mo (~$490/yr for up to 100K monthly pageviews); Pro Plus $169/mo, Ultimate $359/mo |
| Strength | Purpose-built for alt text only, free to start, and writes text into your own HTML rather than an injected overlay. | One JavaScript snippet remediates an entire site — alt text, contrast, keyboard navigation, VPAT generation and legal support — as a single bundled product. |
You need a broad, all-in-one accessibility layer across an entire site — contrast, navigation, legal documentation — and alt text is just one item on that list.
Alt text is your actual problem, and you don't want to pay for a full overlay subscription starting around $490/year just to get image descriptions.
UserWay's free tier does not include AI alt text at all — it's a paid-tier feature. Overlay-based alt text also lives in injected JS rather than your page's HTML, which can limit its SEO value.
Source: UserWay Pricing
Per the W3C's Complex Images guidance, a chart needs a short alt and a long description. Alta writes both — plus an HTML data table of the values it reads off the chart.
The usual complaint about AI alt text is that it describes pixels instead of purpose. Tell Alta what the page is about and it writes to the image's function.
If a label was too small or a value ambiguous, Alta says so instead of inventing it — so your human review goes to the images that need it.
The European Accessibility Act applies since June 2025, and 2026 is the first full year of national supervision — with corrective-action notices already landing.
Google Images drives ~20% of web searches, and AI answer engines lean on alt text to understand what your visuals show.
2.2 billion people live with visual impairment. Alt text makes your content usable for everyone.
Paste a URL into the free checker — it grades every image on the page, then fixes them one click at a time.
Run the free alt text checker →Yes — output is kept under 125 characters, avoids "image of" prefixes, and describes function and content per WCAG 2.2 SC 1.1.1. Complex images additionally get the long description the W3C asks for.
It detects them and returns three things: a short alt for the alt attribute, a long description that transcribes the labels, units and figures, and an HTML data table of the values. Copy the ready-to-paste <figure> snippet and the whole thing is wired up with aria-describedby.
Yes — every AI alt text tool needs a human pass, and Alta is built to make that pass short: it flags what it could not read reliably instead of guessing, and it tells you when an image looks decorative and should get alt="".
No. Images are processed in memory and never stored.
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