Yes, and for More Reasons Than Rankings

The alt attribute is a short text description of an image embedded in the HTML. Its original purpose was accessibility: screen readers announce alt text so that people who cannot see an image still understand what it conveys. It also displays when an image fails to load and gives search engines a textual understanding of visual content. All three functions matter, and the accessibility one carries legal weight in many jurisdictions, which makes alt text more consequential than a typical SEO checklist item.

From a search perspective, alt text is a genuine ranking factor for image search and a supporting context signal for the page itself. Google has stated repeatedly that alt attributes help it understand images and their relationship to surrounding content. For ecommerce, publishers, recipe sites, travel brands, and any business where visual discovery drives traffic, image search is a real acquisition channel that many competitors ignore entirely.

How AAMAX.CO Handles Image Optimisation at Scale

When we audit sites at AAMAX.CO, missing or duplicated alt text is one of the most common issues we find, often across thousands of product images. We build templated but meaningful alt patterns for large catalogues, write bespoke descriptions for editorial and landing page imagery, and combine that with descriptive filenames, responsive formats, lazy loading, structured data, and image sitemaps. Our SEO services treat images as both a ranking opportunity and a performance factor, and our web development team implements the changes directly. As a full service digital marketing company working worldwide, we make sure visual assets contribute to visibility instead of just adding page weight.

What Good Alt Text Looks Like

Describe the image in the context of the page, concisely and naturally. If a photograph shows a technician replacing a condenser unit on a rooftop, say that. Aim for roughly five to fifteen words. Do not begin with image of or picture of, because assistive technology already announces that it is an image. Include a relevant keyword only when it genuinely describes what is shown; forcing commercial terms into every alt attribute is keyword stuffing and helps nobody.

For product images, specify the attributes a shopper cares about: colour, material, model, angle, and use. For charts and infographics, summarise the finding rather than listing every data point, and provide the full detail in nearby text or a caption. For images containing important words, such as a poster or screenshot with instructions, include that text in the alt attribute because it is otherwise invisible to both screen readers and crawlers.

When to Leave Alt Text Empty

Purely decorative images should have an empty alt attribute, written as alt with two quotation marks and nothing between them. Background textures, spacer graphics, and ornamental dividers add no information, and describing them forces screen reader users to listen to noise. Note the difference between an empty alt attribute and a missing one: a missing attribute causes assistive technology to fall back to reading the filename, which is usually worse than silence.

Similarly, avoid redundancy. If a caption immediately below the image already describes it in the same words, vary the alt text or keep it minimal so the description is not announced twice.

The Rest of Image SEO

Alt text works best alongside the other fundamentals. Use descriptive, hyphenated filenames rather than a string of camera generated digits. Serve modern formats such as WebP or AVIF, size images responsively with srcset, and compress them without visible quality loss. Lazy load below the fold images but never the main hero image, since delaying it damages Largest Contentful Paint. Place images near the text they relate to, because surrounding content contributes heavily to how search engines interpret them. Add an image sitemap for large libraries and use product or article structured data where appropriate.

Original photography also matters more than it used to. Stock images used by hundreds of competitors provide little differentiation in image search, while genuine photographs of your team, premises, and work create unique assets that can rank and build trust simultaneously.

Common Mistakes

Copying the same alt text across every image on a page, stuffing location and service keywords into decorative graphics, leaving alt attributes entirely absent on templated product galleries, and describing images inaccurately are the usual offenders. Another frequent problem is putting critical information only inside images, such as pricing tables or specifications rendered as pictures, which makes that content invisible to text based systems.

A Simple Implementation Plan

Crawl your site to list images missing alt attributes, then prioritise by page traffic and commercial value. Fix hero images, product photos, and key landing pages first. Establish a rule in your content workflow so no new image publishes without alt text or an intentional empty attribute. Review a sample with a screen reader to confirm the experience is genuinely useful rather than technically compliant. Combine the work with a broader digital marketing plan so improved visual visibility feeds into real campaigns.

Final Thoughts

Image alt tags are important for SEO, essential for accessibility, and cheap to get right. Write descriptions that would help someone who cannot see the picture, keep decorative images silent, and pair alt text with filenames, formats, and performance work. If you want this handled properly across a large site, hire us at AAMAX.CO for SEO services that cover the details most teams skip.