How to Add Descriptive Alt Text for all important Images on Webflow?

Alt text serves two audiences simultaneously: screen readers, which read it aloud to visually impaired users, and search engines, which use it as a signal to understand what an image depicts. Getting it right benefits both without extra effort.

What makes alt text descriptive: describe what's in the image in the context of surrounding content. For a photo of someone using a laptop at a desk, the alt text isn't "person with laptop" — it's something like "designer working in Webflow on a MacBook at a standing desk." Specific is better than generic. The same image used as a hero on a Webflow agency site should have different alt text than the same image on a productivity app landing page.

How to add alt text in Webflow: click on any image element in Designer. In the Settings panel (gear icon), find the Alt Text field. For CMS images, bind alt text to a dedicated CMS field — set up an alt text field in your collection and bind it to the image's alt text setting. This lets editors write unique alt text per item without touching the design.

What not to do: don't keyword-stuff alt text. "Webflow SEO checklist best Webflow SEO tool 2026" is useless to screen reader users and a red flag for search engines. Write for the person, not the algorithm. The SEO benefit comes from descriptive relevance, not keyword repetition.

Decorative images should have empty alt text (alt=""): not no alt attribute, but explicitly empty. This tells screen readers to skip the image entirely. Images that are purely decorative — borders, background textures, generic stock photos with no semantic meaning — should be empty. Images that communicate information should be descriptive.

The difference matters: no alt attribute means the screen reader may read the image filename, which is worse than useless. Explicitly setting alt="" tells assistive technology the image has no informational content. One is accessible; the other is a failure.

Monthly review: run your site through WAVE (wave.webaim.org) or Lighthouse accessibility audit. Missing alt text is flagged immediately. For CMS-driven sites, check that the alt text field is populated for your most-visited collection items — not just the one you tested when you set it up.