Alt Text Is an Editorial Decision, Not a Keyword Box

Slug: alt-text-editorial-decision
Tags: UX Design, Product Design
Meta description: Write useful alt text by considering an image’s purpose, context and function. A practical editorial workflow for accessible, thoughtful website design.

Featured image: AI-generated conceptual illustration.

A beautiful image can strengthen an article. But its meaning should not depend entirely on seeing it. For a publisher, alternative text is part of the editorial work: deciding which information matters, what a reader needs and how the image contributes to the page.

That makes the familiar empty field beside an uploaded image more than an administrative detail. It is a small design decision with consequences for whether the content can be understood and used.

Start with purpose, not a list of objects

The W3C Web Accessibility Initiative’s Images Tutorial distinguishes informative, decorative, functional and complex images. An informative image needs a text alternative conveying its essential information. A purely decorative image can use an empty alt attribute. A functional image needs wording that communicates its action or destination. A complex chart may need a fuller text equivalent beyond a short description.

The editorial question is therefore not simply “What is in this picture?” It is “Why have we placed this picture here?” A photograph of a bridge could introduce a travel essay, document structural damage or illustrate an architectural style. The same inventory of objects would not serve all three purposes.

Three original examples of better editorial choices

Consider an imaginary article about repairing a bicycle tyre. “Bicycle, hands, wheel, tools” names visible objects but omits the useful action. “A tyre lever lifts the tyre edge over the wheel rim” explains the illustrated step. The description should match the actual photograph; it should not invent a technique that cannot be seen.

Now imagine a product photograph of a bag. If the surrounding page discusses its compartments, “Open travel bag showing three internal compartments” may be more useful than “Stylish premium travel bag”. The second phrase advertises an opinion. The first communicates a visible feature.

Finally, consider a graph used to justify a business recommendation. “Line chart” does not convey the argument. Readers need the relevant trend and access to the underlying values or a fuller explanation. Keep the evidence available in ordinary page content rather than asking one long alt attribute to carry the entire analysis.

An empty alternative can be the right answer

W3C’s alt decision tree asks whether an image adds meaning in context, carries otherwise unavailable text or supplies the meaning of a link or button. It also recognises cases where nearby text already provides the information and an empty alternative is appropriate. Empty alt text is a deliberate choice; omitting the attribute is not the same thing.

This is why a blanket rule requiring a descriptive sentence for every image can produce poor results. A repeated ornamental flourish need not interrupt the reading experience with another description. Conversely, a meaningful screenshot should not be dismissed as decoration simply because writing its alternative takes effort.

Keep promotional language out of the description

Treat alt text as communication, not a container for every phrase you hope a search engine will notice. A string such as “best business success entrepreneur leadership premium growth” tells a reader almost nothing about the image.

A useful internal editing rule is to remove any word that is neither relevant to the image’s purpose nor necessary to understand its role on the page. This is an editorial suggestion, not a fixed technical character limit. Concision should follow clarity, not replace it.

Use AI as a draft assistant, with context

If an AI tool drafts descriptions, give it the article’s subject and explain what the image is doing. An isolated image description may overlook why a detail matters or describe details that the article does not need.

Review the draft against the actual image. Do not let it turn a stock photograph into evidence of a real event, identify an unnamed person or invent emotions and intentions. For generated artwork, make its illustrative status clear where that distinction matters. A visible caption can explain provenance to all readers; an alt attribute has a different job.

A practical prompt is: “Draft a concise alternative for this image in the context of this paragraph. Describe only relevant, observable information. Flag uncertainty instead of inventing details.” The prompt is a starting point, not a guarantee of correctness.

Build a small publishing check

Before publishing, ask the editor to record the image’s purpose, review its alternative and check the page in context. If an image is also a link, ensure its destination is understandable. If it contains essential words, make those words available as text. If it carries data, make the information accessible beyond the picture.

For important pages, include accessibility testing and feedback from people using assistive technology. Reading a draft description aloud can reveal awkward wording, but it does not replace testing how the finished page actually behaves.

The design principle

The strongest image description is not always the most detailed one. It is the one that preserves the meaning a reader would otherwise miss. That requires editorial judgement about context, relevance and purpose.

Begin with your next upload. Before writing the alternative, finish this sentence: “This image helps the reader understand…” If the answer is clear, the description has a direction. If it is not, reconsider the image’s role in the article itself.