Freedom251 › AI Alt Text Generators
Alta
What Alta is
Alta is a web tool for creating alt text from uploaded images and checking pages for accessibility issues. Users can add page context so a description reflects the image’s role, and charts or infographics can receive short alt text, a longer description, and an HTML data table. Alta says it marks labels or values it cannot read reliably rather than filling in guesses, and can identify images that appear decorative. It accepts PNG, JPEG, WebP, and GIF files up to 4 MB each. The maker says generated alt text stays under 125 characters and follows WCAG 2.2 SC 1.1.1, while noting that human review remains necessary. Images are processed in memory and not stored, according to Alta. Its checker scans page HTML for missing, generic, duplicated, or overly long alt text; generating fixes uses the daily quota or a Pro license. The Free plan costs nothing and allows 5 images daily, unlimited page scans, 3 styles, and 13 languages without signup. Pro costs $29 a year and adds unlimited generation, bulk upload of 50 images at once, CSV export, commercial use, and support.
Who it suits
Alta suits site owners and content teams who need image descriptions or a page-level alt text check. Its Shopify and WordPress workflows use fields in each product image or the media library, rather than CMS plugins.
What it does well
- Provides contextual descriptions and chart data tables
- Flags unreadable labels rather than guessing
- Free plan includes unlimited page scans
- Pro supports bulk upload and CSV export
What to know first
- Uploads are limited to 4 MB per image
- No free trial is offered
- Human review is still needed
Limits
Free allows 5 image generations per day, with 3 styles and 13 languages. Generating fixes from page scans uses the daily quota or a Pro license; Pro costs $29 a year and includes unlimited generations.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | $0 · 5 images/day · unlimited page scans · 3 styles · 13 languages · no signup | Free |
| Pro | $29/year · Unlimited generations · bulk upload (50 at once) · CSV export · commercial use · support | $29 a year |
As alttext-ai.com lists them, read 9 Oct 2026. The maker's own page has the final word.
Getting started
- Open https://alttext-ai.com/.
- Use the Free plan without signing up, or choose Pro for unlimited generations and bulk upload.
- Upload a PNG, JPEG, WebP, or GIF image up to 4 MB.
- Provide page context if the image's role on the page should guide its description.
- Review the generated text, then paste it into the image's alt text field in Shopify or WordPress, as applicable.
- Use the page checker to scan HTML for alt text issues.
Verdict
Alta combines image description generation with a page checker, plus tools for chart content and context-aware output. The Free plan covers limited daily generation, while Pro removes that generation limit and adds bulk processing.
Questions
How much does Alta cost?
The Free plan costs nothing. Pro is $29 a year.
Is there a free plan or trial?
Yes. The Free plan includes 5 images per day and unlimited page scans, and it does not require signup. Alta has no free trial.
What platforms does Alta support?
Alta is available on the web. It provides Shopify and WordPress workflows for pasting generated text into image fields.
Which image formats can I upload?
PNG, JPEG, WebP, and GIF are accepted, up to 4 MB per image.
Does Alta have CMS plugins?
No. For Shopify and WordPress, users paste generated alt text into the relevant image field.
Facts from Alta's own pages
- Accessibility output
- Alta says its alt text is kept under 125 characters and follows WCAG 2.2 SC 1.1.1; it also says human review is still needed. · alttext-ai.com, 9 Oct 2026
- Charts and infographics
- For charts and infographics, Alta can return short alt text, a long description, and an HTML data table. · alttext-ai.com, 9 Oct 2026
- Context-aware output
- Users can provide page context so Alta can describe an image according to its function on the page. · alttext-ai.com, 9 Oct 2026
- Image input limits
- The upload accepts PNG, JPEG, WebP, and GIF images up to 4 MB each. · alttext-ai.com, 9 Oct 2026
- Image privacy
- Alta says images are processed in memory and never stored. · alttext-ai.com, 9 Oct 2026
- Page checker
- The free checker scans page HTML for missing, generic, duplicated, or overly long alt text, among other issues; generating fixes uses the daily quota or a Pro license. · alttext-ai.com, 9 Oct 2026
- Shopify workflow
- For Shopify, users generate alt text in Alta and paste it into each product image's ALT field, or bulk-process a catalog with Pro. · alttext-ai.com, 9 Oct 2026
- Uncertain results
- Alta says it flags labels or values it cannot read reliably instead of guessing, and can identify images that appear decorative. · alttext-ai.com, 9 Oct 2026
- What it does
- Alta generates screen-reader-ready alt text from uploaded images and offers a checker that scans a page for alt text issues. · alttext-ai.com, 9 Oct 2026
- WordPress workflow
- For WordPress, users paste generated alt text into an image's Alternative Text field in the media library. · alttext-ai.com, 9 Oct 2026
Where Alta stands on Freedom251
- AI Alt Text Generators#11 of 27