Altagonist vs ALTification

Altagonist is a WordPress plugin that creates image alt text using image metadata and page content. It can process hundreds of images at once and supports 70 languages. Its three quality levels draw on different amounts of context: Lite uses image metadata, Medium also uses page excerpts, and High uses full page content. Each image costs one, two, or three credits respectively. You can turn on automatic generation for uploaded images, choose a default language and quality level, and edit generated tags in the WordPress media library. JPEG, PNG, GIF, and WebP work natively; SVG, AVIF, TIFF, and BMP are converted automatically. The documentation says images are processed in real time and immediately discarded rather than stored. All plans support multiple WordPress sites, with credits shared among sites on the same license key. The Free plan costs nothing and includes 50 monthly credits. Personal, Pro, and Agency are listed as Coming Soon at €5 a month, €12 a month, and €29 a month, respectively. Unused credits do not roll over.

ALTification is a WordPress plugin and web service that uses AI to generate keyword-aware alt text, captions, and descriptions for images. It considers the page’s surrounding content and SEO context, and supports bulk site scans as well as targeted scans of pages, posts, and public custom post types. Supported formats include JPG, PNG, WebP, and AVIF. Integrations include Yoast SEO, Rank Math, All in One SEO, SEOPress, The SEO Framework, WooCommerce, and Advanced Custom Fields. Agency workflows can use before-and-after reports. One credit covers a generation; requesting alt text, a caption, and a description together can use up to three credits per image. The free trial includes 25 credits, three Preview & Refine tests, and one site. Monthly and one-time credit packages are available. Each API key is tied to the first WordPress site where it is used, so additional sites need separate keys. ALTification is operated by A Fine Studio in the United Kingdom. Its privacy policy says submitted images, prompts, and responses are not kept after generation and are not used to train AI models.