Alt text

SleekAI describes images in the media library with a vision model and writes the description to the image’s alt text, caption or description. It works on images you select in a table, and on new uploads if you turn that on.

Alt text sits below AI in the sidebar and has three pages: the model, the generation settings, and the table.

Model

The Alt text page chooses the model that looks at the images. It lists the models of every provider with a stored API key; custom models are not offered. Choose a model that accepts images.

System instruction tells the model how to describe an image. Its placeholder shows the instruction SleekAI uses when the settings hold none: a concise, descriptive alt text of under 125 characters. Along with the image, SleekAI sends the image’s title and caption when it has them.

Nothing is generated until a model is chosen.

Generation

The Generation page has two settings:

• Generate alt text for new uploads generates a description for every image added to the media library.
• Fields chooses where the description is written: Alt text, Image caption and Image description. The same text goes into every field you choose, replacing what was there. Choose at least one field; otherwise the description is generated and then discarded.

An upload does not wait for the model: SleekAI queues the work as the sleekAi/altText/generate action in Action Scheduler and generates the text shortly after. If the action cannot be queued, the text is generated during the upload instead. A callback you add to that action at a priority above 10 runs after SleekAI has written the text; see the hooks reference.

Table

The Table page lists the media library’s images with a thumbnail, their alt text, caption and description, and their date. Select images, or every image on the page with the checkbox in the table’s header, and choose Generate above the table to describe them one after another with the current model and fields; the button names how many images are selected and stays disabled until you select one. The Status column shows each image as processing, completed or failed.

The table pages through the library, 10 rows at a time unless you choose up to 500, newest first unless the Date column’s menu sorts it oldest first. The page keeps that state in its address, before the #, as paged, per_page and order=oldest, so a link can open a given page of the table; a page past the last one opens the last.

From the command line

wp sleek ai alt-text generate describes images with the same model and fields, by attachment ID or for every image that has no alt text yet:

wp sleek ai alt-text generate 42 43
wp sleek ai alt-text generate --all-missing --dry-run

--dry-run lists the images without calling the provider. A run handles at most 50 images, or as many as --limit names up to 500; run it again for the rest. The CLI reference lists every option.