Image Alt Text: How to Fix It Without Hurting SEO

Many site owners know they need image alt text, yet still aren’t sure what to write, which images can be left blank, or how much detail is too much. The safest approach is to write for the person who can’t see the image or whose connection hasn’t loaded it. Search engines benefit from that clarity, but accessibility should guide the decision.

This guide focuses on fixing existing alt text, not filling every field with keywords. You’ll learn how to handle product photos, charts, logos, decorative graphics, linked images, and images that contain words. You’ll also get a practical audit process you can use in a content management system.

What Image Alt Text Actually Needs to Do

Alt text gives a short text alternative for an image. Screen readers may read it aloud, and browsers may show it when an image fails to load. Search engines can use it as a clue about the image and the page, but that is a secondary benefit.

The right wording depends on the image’s job. A photo of a cracked phone on a repair service page needs a different description from a decorative brushstroke beside the heading. The subject matters, yet the surrounding content matters just as much.

Ask one practical question: If the image disappeared, what information would a visitor lose? Write that information and leave out details that don’t help the visitor understand the page.

For example, a page about a restaurant’s private dining room might use “Private dining room with a long wooden table and pendant lights.” It doesn’t need “high-resolution photograph of a modern restaurant interior taken during the day.” The latter describes the file, not the useful content.

How to Write Better Image Alt Text

Good image alt text is usually short, specific, and tied to the page’s purpose. There is no universal character limit that makes every description correct. A useful description may be a few words or a full sentence, depending on the information the image carries.

Start with the image’s purpose

Before describing what you see, identify why the image appears on the page. Is it showing a product? Explaining a process? Linking to another page? Supporting a mood? Replacing text that isn’t available elsewhere?

A headshot on an author page could use “Maya Patel, author of The Small Business Tax Guide.” A generic version such as “woman smiling” misses the page’s purpose. A product image might need “Blue insulated stainless steel water bottle, 24 ounces,” because color, material, and size help shoppers identify the item.

That doesn’t mean every product photo needs a long description. If five gallery images show the same sweater from different angles, describe the angle only when it adds information, such as “Back of the green wool cardigan showing the ribbed hem.”

Use plain, natural language

Write as if you’re describing the image to someone sitting beside you. Skip phrases such as “image of,” “photo of,” and “picture of” in most cases. A screen reader already announces that an image is present, so “image of a golden retriever” usually becomes “golden retriever.”

There are exceptions. If the fact that something is a photograph, illustration, map, or screenshot matters, say so. “Map showing the walking route from Union Square to the ferry terminal” gives a visitor useful context that “walking route” may not.

Keep the language natural. Don’t cram in a target phrase because you think it might rank. “Affordable Chicago plumber fixing kitchen sink” sounds like a search query, not a helpful description. “Plumber replacing a kitchen sink valve in a Chicago home” reads better and communicates more.

Include text that appears inside the image

If an image contains words that visitors need, include those words in the alt text or nearby page content. A promotional graphic that says “Free shipping through Friday” should not have alt text that says only “shipping promotion.” The offer is the useful information.

Never make an image the only place where essential information lives when ordinary HTML text would work. Text in an image can be harder to resize, translate, search, or read with assistive technology. Alt text is a backup description, not a substitute for accessible page content.

When Image Alt Text Should Be Empty

Some images should have an empty alt attribute: alt="". This tells assistive technology to skip the image because it adds no information. The attribute should be present and empty, rather than missing altogether.

Decorative examples include a flourish beside a heading, a background pattern, a divider line, or a stock photo that repeats the message already stated in the paragraph. Adding alt text to these images creates noise. A screen reader user may hear the same idea twice or be forced to listen to meaningless file details.

Consider a blog post with a heading called “Three ways to lower heating costs,” followed by a decorative photo of a house. If the photo doesn’t show a specific fact or support a later instruction, empty alt text is appropriate. If the photo shows a faulty furnace that the article asks readers to inspect, a useful description makes sense.

Be careful with icons. A magnifying-glass icon inside a search button may need alt text if the button has no visible label. If the button already says “Search,” the icon is decorative and should be skipped. The control needs an accessible name; the decorative symbol doesn’t need a second one.

Image Alt Text for Links, Buttons, and Logos

An image that links somewhere needs alt text describing the link’s destination or action, not every visual detail. A logo linking to the home page can use “Brooklyn Click home” if the surrounding interface doesn’t make that destination clear. A banner linking to a sale page might use “View spring furniture sale.”

Think of the alt text as the label for the link. “Red shoes on white background” is a poor choice for a clickable banner that leads to a product category. “Shop women’s red shoes” tells the visitor what will happen after activation.

Logos require judgment. If the logo is decorative and the company name appears as regular text next to it, an empty alt attribute may be fine. If the logo is the only way to identify the company or return home, give it a useful label. Avoid descriptions such as “logo logo.”

Social icons follow the same rule. An Instagram icon that links to a profile can use “Instagram.” If the page already has a visible link labeled “Follow us on Instagram,” the icon can be decorative. Check the accessible name of the entire link rather than treating the image in isolation.

Fixing Image Alt Text on Common Website Types

The editing process changes slightly by site type, but the decisions stay consistent.

Product and ecommerce pages

Include the product name and details that help identification. Color, model, size, material, and view can matter. Avoid turning every gallery image into a sales pitch. Alt text should describe the image, not repeat “buy now,” “best price,” or a list of search terms.

For a single product image, “Women’s black leather ankle boot with side zipper” works well. For a detail shot, “Close-up of the boot’s side zipper and stitched leather upper” is more useful. If the product title is already directly beside the image, a shorter description may be enough.

Service and local business pages

Show what the business does or identify a relevant place, person, or finished project. “Technician installing a ductless heat pump” is stronger than “HVAC service.” A project gallery might need location and work type, such as “Backyard patio with new paver seating area in Austin.” Don’t add an unverified neighborhood or city just to target local searches.

Charts, diagrams, and screenshots

These often need more than a quick visual label. First, provide a short alt text that identifies the subject. Then put the meaningful data or instructions in nearby HTML text, a table, or a longer description.

For a chart, “Line chart showing monthly website leads from January through June” identifies the graphic, but it doesn’t give the values or trend. The page should state those details in text: leads rose from 42 in January to 89 in June, with the largest increase in April. Alt text alone isn’t a good home for a dense data set.

A software screenshot might use “Settings panel showing two-factor authentication enabled.” If readers need to follow the controls, describe the steps in the article itself. A long alt attribute can become difficult to hear and maintain.

Audit Image Alt Text Without Starting Over

You don’t need to inspect every image in one afternoon. Start with pages that attract visitors, generate leads, support sales, or explain important services. A focused audit usually finds more useful fixes than a rushed sitewide edit.

1. Make a page list. Begin with your main service pages, product pages, top blog posts, and landing pages linked from advertising or email campaigns.
2. Review each image in context. Read the heading and nearby paragraph before writing anything. The same photo may need different alt text on different pages.
3. Classify the image. Mark it as informative, functional, decorative, or text-bearing. This prevents the common mistake of describing every image in the same way.
4. Rewrite the highest-impact problems. Prioritize missing alt text on meaningful images, keyword-stuffed descriptions, duplicate descriptions, and images used as unlabeled links or buttons.
5. Check the rendered page. Save the change, then inspect the page rather than trusting only the editor field. Some themes replace, truncate, or ignore fields.
6. Test with a screen reader or accessibility checker. Automated tools can find missing attributes and suspicious patterns, but a person still needs to judge whether the wording makes sense.

Keep a simple spreadsheet with the page URL, image location, current text, recommended text, and status. That record helps teams avoid rewriting the same image every time a page is updated. It also exposes repeated problems in a template, such as a gallery that assigns the same generic alt text to every product photo.

For a deeper look at a related image SEO detail, see how image file names affect SEO. File names and alt text can support the same page topic, but they have different jobs. Renaming a file won’t fix a missing description, and a good alt attribute won’t repair a confusing file-management system.

Common Alt Text Mistakes That Need Fixing

Keyword stuffing is the most visible mistake. Repeating a phrase several times, adding city names that aren’t shown, or listing related terms makes the description harder to understand. Search engines don’t need a sales pitch in an image attribute.

Duplicate alt text causes trouble on galleries and team pages. If every employee headshot says “professional business person,” visitors lose the information that distinguishes one person from another. Use names and roles when those details matter.

Leaving a field blank by accident is different from choosing an empty attribute. A meaningful image with no alt text may be announced as a file name, a link, or simply “graphic,” depending on the technology. Confirm that empty fields are intentional.

Writing a transcript in a short field creates another problem. Complex charts, maps, and instructional screenshots need supporting content. Put the full explanation in the page copy, a table, or an expandable description. Keep the image alt text focused.

Describing what isn’t visible can mislead visitors. Don’t claim a product is waterproof because the photo shows it near water. Don’t add a location because the business wants local relevance. Alt text should describe evidence in the image and information established by the page.

Does Better Image Alt Text Improve SEO?

Better alt text can help search engines understand an image and the page around it. It may support visibility in image search, especially when the description accurately matches a useful image and a relevant page. That benefit is real, but it isn’t a shortcut to rankings.

Alt text won’t compensate for thin content, a confusing page, slow delivery, poor mobile design, or an offer nobody wants. It also won’t make a decorative image valuable. Treat it as one small part of a sound page, with accessibility and clarity ahead of search terms.

Track the work by watching practical outcomes. Check for fewer accessibility errors, clearer content reviews, improved product identification, and qualified traffic to pages that use meaningful images. Search impressions alone don’t tell you if the descriptions help visitors.

When a page already explains the image clearly, the SEO gain from rewriting a passable alt attribute may be modest. Fix the serious errors first. A missing description on a product image deserves attention before a minor wording change on a decorative graphic.

Final Verdict

Fix image alt text by describing the information or action a visitor needs, and use an empty attribute for images that add nothing. Prioritize meaningful images, linked graphics, products, charts, and screenshots before polishing minor wording. Done this way, alt text improves accessibility first and gives search engines clearer context as a natural side effect.

Frequently Asked Questions