There’s a fundamental difference between describing an image and writing alt text for a page. Most tools do the former. ALTification does the latter.
What a media-library tool sees
When an alt text tool scans your media library, it sees a collection of image files. It can analyse each one — identify objects, colours, composition, subjects — and produce a description. That description might be accurate. It might even be readable. But it’s written in isolation, with no knowledge of where the image appears, what the page is about, or what you’re trying to rank for.
A photo of a glass roof extension gets the same treatment whether it’s on a product page for “inset glass roofs,” a case study for a specific project, or a blog post about planning permission. The image is identical. The SEO context is completely different.
What page-level scanning gives you
When ALTification scans a page, it reads everything available: the page title, the Yoast or Rank Math focus keyphrase, the post type, the surrounding content, and for WooCommerce products, the product description, category hierarchy, and attributes. It then generates alt text that’s relevant to that specific page — not just that image.
The same glass roof photo on the inset glass roofs product page gets alt text that incorporates “inset glass roof” naturally. On the case study, it reflects the project context. On the blog post, it reflects the article topic. One image, three different pages, three pieces of alt text that are each doing real SEO work for the page they appear on.
Why this matters for multi-page images
Some images appear on multiple pages — a hero shot used across several product categories, or a lifestyle image used in multiple blog posts. ALTification detects this and handles it intelligently: rather than forcing one page’s keyword onto an image that serves multiple contexts, it generates descriptive alt text that works across all of them without cannibalising any individual page’s relevance.
This is the kind of nuance that manual alt text writing handles instinctively, but that generic tools miss entirely.
How ALTification handles shared images intelligently
When an image appears on more than one page, ALTification applies a priority hierarchy to decide which context should inform the alt text.
If an image appears on a WooCommerce product page and also on a standard page, the product page context takes priority — because product pages carry the most specific, commercially valuable keywords and the most complete product data. The alt text reflects the product name, category, and attributes rather than the more generic context of the standard page.
If an image appears across multiple standard pages or posts, ALTification uses the context of whichever page has the most specific SEO data available — pulling from the focus keyphrase, page title, and surrounding content to make the best possible choice.
However, if an image appears on more than four pages, a different rule applies. At that point, forcing any single page’s keyword onto the image would risk creating misleading or irrelevant alt text for the other contexts. Instead, ALTification falls back to your site’s brand keywords — producing descriptive, brand-relevant alt text that works neutrally across all the pages the image serves, without cannibalising any individual page’s relevance.
This tiered approach means ALTification is making intelligent SEO decisions at the image level, not just describing what it sees — and not blindly applying a site-wide keyword list that ignores context entirely.