ALTer is a Chrome extension that detects images missing accessible descriptions and generates descriptions when requested. Images with a proper description are left unchanged; images without one receive an “ALT” badge. Clicking an image prompts ALTer to create a description, place it in the image’s alt attribute, and make it available to screen readers. The service is intended to help address WCAG Success Criterion 1.1.1 on pages a user visits, including pages they do not control. To use it, create a free account and sign in through the extension popup with an email address and password. New users receive 30 credits per month, and each generated image description uses one credit. ALTer is free, with a listed plan of 0.00 USD per free. The site directs users to add the extension to Chrome from the Web Store. Publishing workflows are also listed.
Who it is for
ALTer suits people who want to make images on pages they visit more accessible to screen readers, including pages they do not control. It may also suit users who need publishing workflows and can work within the monthly credit allowance.
What is good
- Leaves images with proper descriptions untouched.
- Generated text is added to the alt attribute.
- Descriptions become readable by screen readers.
- Free plan includes 30 monthly credits.
What to know first
- Chrome extension only.
- Each image description uses one credit.
- Account and sign-in are required.
Verdict
ALTer offers on-demand descriptions for images missing alt text, with a monthly credit allowance. It is a Chrome extension and requires an account to use.
Get started with ALTer
- Add ALTer to Chrome from the Web Store.
- Create a free account.
- Sign in to the extension popup with an email address and password.
- Click an image marked with an “ALT” badge to generate its description.
What the free plan stops at
The Free plan costs 0.00 USD per free and includes 30 credits per month. One credit is used for each image description.
Questions about ALTer
How much does ALTer cost?
The Free plan is 0.00 USD per free.
Does ALTer have a free plan?
Yes. It includes 30 credits per month, with one credit used per image description.
Which platform does ALTer support?
ALTer is listed for the extension platform. The site directs users to add it to Chrome from the Web Store.
Does ALTer change images that already have alt text?
It leaves images with a proper description unchanged.
How does ALTer make descriptions available to screen readers?
When clicked, a generated description is added to the image’s alt attribute and is immediately readable by screen readers.
Does ALTer support publishing workflows?
Yes, publishing workflows are listed.
ALTer plans and pricing
All plansCompared on AI alt text generators
- Free plan
- Yes
- Publishing workflows
- Yes
