Editing Machine-Generated Alt Text for Product Photos: Ten Practical Revisions

Product photographs need more than object recognition

A product photograph does more than identify an object. It may show the color, shape, controls, packaging, included accessories or a particular feature. Useful alt text helps a reader understand what that individual image contributes to a product page. A description that says only "A bag" may identify the object but leave out the adjustable shoulder strap that distinguishes the photograph from other views.

Machine-generated descriptions can be useful as a first draft, especially when a catalog contains many images. However, recognizing the main object is only one part of the task. A description can be fluent and still miss the relevant feature, confuse an accessory with an included item or claim a material that cannot be established visually. The following ten revisions illustrate practical editorial corrections using hypothetical product photographs.

Ten revisions that make product alt text more useful

Each example starts with wording that needs improvement and gives a revised version. The examples are illustrative, not descriptions of actual tool results. The reason for each edit identifies the editorial decision behind the change.

• 1. Replace vague object labels. Before: "A bag." After: "A black backpack with a front zippered pocket." Edit reason: Identify the product and a visible distinguishing feature.
• 2. Remove unsupported material claims. Before: "A genuine leather wallet." After: "A brown wallet with a textured surface and visible stitching." Edit reason: Appearance alone does not establish that a material is genuine leather.
• 3. Describe the relevant product view. Before: "A pair of headphones." After: "Over-ear headphones shown from the side, with a padded headband and ear cushions." Edit reason: Communicate details visible in this particular photograph.
• 4. Distinguish product colors carefully. Before: "A blue water bottle." After: "A water bottle with a dark teal body and a black screw-top lid." Edit reason: Use a more useful color distinction when it is clearly visible and relevant.
• 5. Remove promotional claims. Before: "A premium, high-quality running shoe." After: "A running shoe with a mesh upper, contrasting side panels and a thick sole." Edit reason: Replace subjective marketing language with visible details.
• 6. Avoid inventing specifications. Before: "A 1-liter insulated steel bottle." After: "A stainless-steel-colored bottle with a screw-top lid." Edit reason: Capacity and insulation performance need reliable product information.
• 7. Clarify accessories. Before: "A camera with a tripod and case." After: "A camera displayed beside a tripod and carrying case." Edit reason: The photograph does not establish that every pictured item is included in the purchase.
• 8. Describe a meaningful control. Before: "An electronic device." After: "A handheld electronic device with three buttons along its upper edge." Edit reason: The visible controls may matter to someone comparing product designs.
• 9. Avoid misleading quantity claims. Before: "A set of four drinking glasses." After: "Four drinking glasses arranged in a row." Edit reason: A photograph showing four objects does not establish the package quantity.
• 10. Make the final image distinct. Before: "A red backpack." After: "Rear view of a red backpack showing two padded shoulder straps and a top handle." Edit reason: Distinguish this image from the front view and communicate the additional information it provides.

Use product context to resolve uncertain details

Product catalogs often contain information that cannot be established by looking at a photograph. Capacity, dimensions, weight, compatibility, materials, waterproofing and package contents should come from reliable product specifications. If a description needs one of these facts, check the product information maintained by the seller or manufacturer. The photograph can support a visual description, but it cannot independently confirm every specification.

Color also deserves attention. Lighting, image processing and display settings can change how a product appears. If the official catalog identifies a product as forest green, that information may help distinguish it from a similar model. However, a description should not turn an uncertain visual impression into a precise color claim. When color is central to the purchasing decision, use consistent, verified catalog terminology.

The relationship between a product and its accessories needs similar care. A charging cable, protective case or display stand might be shown for illustration without being included in the package. Alt text should describe what is pictured. The visible arrangement does not establish the contents of a purchase.

Give each product photograph a distinct purpose

An online catalog may show the same item from the front, back, side and inside. Repeating the same description for every photograph can make a product gallery less informative. The first image may identify the item, while later images communicate construction, controls, storage space or scale. Each description should reflect the information available in that particular view.

For example, a front photograph of a backpack might use "Front view of a gray backpack with a large zippered compartment." A second photograph might use "Back view showing padded shoulder straps and a mesh support panel." A third could explain the interior arrangement if it is clearly visible. These descriptions work together without making readers encounter the same sentence repeatedly.

When two images genuinely provide the same information, the descriptions may be similar. A gallery does not need artificial variation. The editorial question is whether a reader gains anything important from the additional image and its alternative text.

Keep alt text separate from captions and transcripts

Product pages sometimes combine photographs, video demonstrations and spoken explanations. Each accessible text form has a different job. Alt text describes meaningful visual information in an image. Captions present spoken dialogue and relevant audio information in synchronized text, including appropriate speaker identification and meaningful sound cues. Transcripts provide a text version of audio or audiovisual content without requiring the reader to follow its timing.

Audio description serves another purpose. It communicates important visual information in audiovisual media, particularly details such as actions, settings, gestures and changes that are not available through the soundtrack. A product demonstration might show how a latch opens while the presenter talks about the item. If that visual action is important and not explained in the speech, audio description can make the demonstration more accessible.

These formats are related but not interchangeable. A transcript of a product video does not automatically describe every visual action. Captions do not replace alternative text for an accompanying photograph. A short image description does not provide the full sequence of actions in a demonstration. Editors should identify the content type first and choose the appropriate accessible equivalent.

A plain-English guide to audio description basics

Audio description is spoken or otherwise delivered information about relevant visual events in media. It may describe a person entering a room, a change in setting, a visible demonstration or an action that explains how a product works. The description is usually placed in available pauses in dialogue or other important audio. The exact approach depends on the medium and production requirements.

For a short product demonstration, an audio description might explain, "The presenter turns the device over to reveal a charging port." This gives information that a viewer could otherwise receive only by seeing the action. It should not repeat dialogue that already explains the same detail, and it should avoid unnecessary commentary about visual decoration.

When a product page includes both still images and video, editors should plan accessibility for each element. Alt text covers the informative still photographs. Captions and transcripts make speech and relevant audio information available in text. Audio description communicates important visual action in the video. The page should make these alternatives easy to find and understand.

Apply a final editorial check before publishing

A practical review of product alt text starts with five questions. Does the description identify the correct item? Does it mention the visual detail that makes this photograph useful? Does it make any claim about materials, dimensions or package contents that needs confirmation? Does it repeat information already available in nearby text? Does it distinguish this view from other photographs in the gallery?

Read the description without looking at the photograph, then compare it with the image and product information. Remove claims that cannot be supported, replace promotional adjectives with concrete visual details and shorten repeated wording. If a specification matters, confirm it against the primary product information. Choose one product page and revise its image descriptions in gallery order, starting with the main photograph and working through each additional view.

Questions readers ask