ALTer vs AltText.io
| ALTer | AltText.io | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | Free | $19/mo |
| Open source | No | No |
| Platforms | extension | api, extension, Web |
| Free plan | Yes | Yes |
| Publishing workflows | Yes | Yes |
| Paid from | — | 19 /mo |
| Bulk processing | — | Yes |
| API access | — | Yes |
| CMS plugins | — | Yes |
| Image formats | — | PNG, JPG, WebP |
Both are listed in Best AI Alt Text Generators. On Samsung Mobile US Press, AltText.io scores higher on our published basis.