{"id":87,"date":"2026-10-13T01:02:09","date_gmt":"2026-10-13T01:02:09","guid":{"rendered":"https:\/\/www.srbooster.com\/blog\/image-seo-how-to-write-alt-text\/"},"modified":"2026-10-13T01:02:09","modified_gmt":"2026-10-13T01:02:09","slug":"image-seo-how-to-write-alt-text","status":"publish","type":"post","link":"https:\/\/www.srbooster.com\/blog\/image-seo-how-to-write-alt-text\/","title":{"rendered":"Image SEO: How to Write Alt Text That Ranks"},"content":{"rendered":"<p>A small team can handle image SEO alt text by focusing on a few basics. Image SEO means helping Google discover images and helping Google and users understand them through alt text, filenames, and surrounding page context. Google uses alt text alongside computer vision and page content to understand an image\u2019s subject matter.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/developers.google.com\/search\/docs\/appearance\/google-images\"><sup>[1]<\/sup><\/a><\/p>\n<p>Missed basics are still common. In a February 2025 sample of the top 1,000,000 home pages, 55.5% had missing alternative text for images.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/webaim.org\/projects\/million\/2025\/\"><sup>[3]<\/sup><\/a> For a startup, that gap is an opportunity:<\/p>\n<ul>\n<li><strong>Describe meaningful images concisely<\/strong> in natural language, without keyword stuffing.<\/li>\n<li><strong>Leave decorative images empty<\/strong> with alt=&#8221;&#8221; so screen readers skip them.<\/li>\n<li><strong>Use standard HTML and sitemaps<\/strong> so crawlers can find image files.<\/li>\n<\/ul>\n<h2>What alt text does \u2014 and what it doesn&#8217;t<\/h2>\n<p>Alt text has <strong>two jobs<\/strong>. For accessibility, it provides a text alternative that can be read aloud or rendered as Braille.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.w3.org\/WAI\/tutorials\/images\/\"><sup>[4]<\/sup><\/a> For search, Google uses alt text with computer vision and page content to understand an image\u2019s subject matter.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/developers.google.com\/search\/docs\/appearance\/google-images\"><sup>[1]<\/sup><\/a><\/p>\n<p>You still need the right page around an image. Google considers page content and nearby text when determining where an image may appear, while image preview selection is automated and not guaranteed.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/developers.google.com\/search\/docs\/appearance\/google-images\"><sup>[1]<\/sup><\/a> Adding alt text alone does not guarantee rankings, image-search placement, or traffic.<\/p>\n<p>Image-heavy startup pages need a system. In that same sample, 18.5% of all home page images had missing alternative text, across more than 58.6 million images and an average of 58.6 images per home page.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/webaim.org\/projects\/million\/2025\/\"><sup>[3]<\/sup><\/a> If your homepage, pricing page, and docs each load dozens of logos, screenshots, icons, and illustrations, spot fixes will not hold.<\/p>\n<p>Accessible practices can improve usability and discovery, but they are not a startup compliance threat. The U.S. Title II web rule sets WCAG 2.1 Level AA for state and local governments, with compliance dates of April 26, 2027, and April 26, 2028, depending on population. It does not generally apply to startups.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ada.gov\/resources\/2024-03-08-web-rule\/\"><sup>[9]<\/sup><\/a><\/p>\n<h2>How to write image SEO alt text that works<\/h2>\n<p>Google advises writing <strong>useful, information-rich alt text<\/strong> in the context of the page, using keywords only where they fit naturally. <code>alt=\"Dalmatian puppy playing fetch\"<\/code> is helpful; stuffing an alt attribute with phrases like <code>alt=\"puppy dog baby dog pups puppies dog dogs\"<\/code> creates a poor user experience and may cause the site to be seen as spam.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/developers.google.com\/search\/docs\/appearance\/google-images\"><sup>[1]<\/sup><\/a><\/p>\n<p>There is no strict character limit for alt text. Keep it descriptive but not overly long, and avoid starting with \u201cimage of\u201d or \u201cpicture of\u201d.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/moz.com\/learn\/seo\/alt-text\"><sup>[6]<\/sup><\/a><\/p>\n<p>Do not use filler just to fill the attribute. In the WebAIM sample, 11% of images with alt text had questionable or repetitive text, such as \u201cimage,\u201d \u201cgraphic,\u201d a filename, or text identical to nearby copy.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/webaim.org\/projects\/million\/2025\/\"><sup>[3]<\/sup><\/a> That kind of alt text gives little useful information to a screen-reader user or to Google.<\/p>\n<blockquote>\n<p>You need to optimize file names and alt text: always rename your files using descriptive keywords (e.g., organic-apple-pie-recipe.webp) and write a clear, natural alt attribute (e.g., alt=\u201dEasy organic apple pie recipe\u201d).<\/p>\n<p>\u2014 Vincent H\u00e9go, SEO expert, vincenthego.com <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/imagify.io\/blog\/image-optimization-seo\/\"><sup>[7]<\/sup><\/a><\/p>\n<\/blockquote>\n<h3>Describe informative images briefly<\/h3>\n<p>Product screenshots, team photos, and original charts need a <strong>short description of essential information<\/strong>, not a pixel-by-pixel inventory.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.w3.org\/WAI\/tutorials\/images\/\"><sup>[4]<\/sup><\/a> Name the function a visitor needs: \u201cAcme analytics dashboard showing churn by cohort\u201d tells more than \u201cimage1.jpg.\u201d For a team photo, add context: \u201cAcme co-founders demoing prototype at booth.\u201d<\/p>\n<p>For complex charts and infographics, keep alt text brief and put the full data in nearby text. That complete equivalent serves screen-reader users and gives search systems more context.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.w3.org\/WAI\/tutorials\/images\/\"><sup>[4]<\/sup><\/a> <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/moz.com\/learn\/seo\/alt-text\"><sup>[6]<\/sup><\/a><\/p>\n<h3>For linked images, describe destination or action<\/h3>\n<p>When an image is inside a link or button and is needed to understand the destination, alt text should <strong>describe the destination or action<\/strong>, not the appearance.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.w3.org\/WAI\/tutorials\/images\/decision-tree\/\"><sup>[5]<\/sup><\/a> <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.w3.org\/WAI\/tutorials\/images\/\"><sup>[4]<\/sup><\/a> Google also notes that alt text can function like anchor text when an image is used as a link.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/developers.google.com\/search\/docs\/appearance\/google-images\"><sup>[1]<\/sup><\/a><\/p>\n<p>Apply this to clickable logos, signup buttons, and directory profile logos. A logo linking to your homepage could use \u201cAcme \u2014 home,\u201d not \u201cblue hexagon logo.\u201d A directory profile logo that links to your site should make that destination clear.<\/p>\n<p>Linked images deserve early attention. In the accessibility sample, 44% of images missing alternative text were linked images, and one out of every five linked images was missing alt text.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/webaim.org\/projects\/million\/2025\/\"><sup>[3]<\/sup><\/a> Start by checking linked logos and calls to action.<\/p>\n<h3>Leave decorative images empty<\/h3>\n<p>Background dividers, flourishes, stock shapes, and icons that repeat nearby text add no meaning. Give those images <strong>empty alt text with alt=&#8221;&#8221;<\/strong> so assistive technology skips them, and use CSS for purely decorative presentation.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.w3.org\/WAI\/tutorials\/images\/\"><sup>[4]<\/sup><\/a> <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.w3.org\/WAI\/tutorials\/images\/decision-tree\/\"><sup>[5]<\/sup><\/a><\/p>\n<p>If the same information already appears in nearby text, do not repeat it in alt text. Empty alt keeps the page clearer for listeners and leaves more time for screenshots and diagrams that carry meaning.<\/p>\n<h2>Help Google discover and understand your images<\/h2>\n<p>Use <strong>standard HTML with img and src<\/strong>. Google finds images in an img element\u2019s src attribute, even inside a picture element, but does not index CSS background images.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/developers.google.com\/search\/docs\/appearance\/google-images\"><sup>[1]<\/sup><\/a> Supported formats referenced in src include BMP, GIF, JPEG, PNG, WebP, SVG, and AVIF.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/developers.google.com\/search\/docs\/appearance\/google-images\"><sup>[1]<\/sup><\/a><\/p>\n<p>For responsive images, include a src fallback when using srcset or picture, because some browsers and crawlers do not understand those attributes on their own.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/developers.google.com\/search\/docs\/appearance\/google-images\"><sup>[1]<\/sup><\/a> The fallback makes the image URL available to crawlers and older browsers.<\/p>\n<p>Filenames and placement provide light context clues. A short, hyphenated name like my-new-black-kitten.jpg is better than IMG00023.JPG, and placing the image near relevant text on a relevant page helps Google connect the image to its subject.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/developers.google.com\/search\/docs\/appearance\/google-images\"><sup>[1]<\/sup><\/a> Rename files before upload and avoid generic names like image1.jpg or pic.gif.<\/p>\n<p>Descriptive filenames and natural alt text work together. As SEO expert Vincent H\u00e9go recommends, rename image files with descriptive terms and write a clear, natural alt attribute.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/imagify.io\/blog\/image-optimization-seo\/\"><sup>[7]<\/sup><\/a><\/p>\n<p>For images Google might otherwise miss, such as JavaScript-loaded galleries, add an image sitemap or image tags to your existing sitemap. Each image:image tag can contain up to 1,000 image:loc tags. If you use a CDN, verify both domains in Search Console and make sure robots.txt does not block images you want indexed.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/developers.google.com\/search\/docs\/crawling-indexing\/sitemaps\/image-sitemaps\"><sup>[2]<\/sup><\/a><\/p>\n<p>Do not add image:caption, image:title, image:license, or image:geo_location. Google has removed these deprecated tags and attributes from its documentation.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/developers.google.com\/search\/docs\/crawling-indexing\/sitemaps\/image-sitemaps\"><sup>[2]<\/sup><\/a><\/p>\n<p>Schema.org primaryImageOfPage or image properties and og:image can influence which image Google selects for a preview, but they do not guarantee a particular selection. Choose a relevant, representative, high-resolution image instead of a generic logo or an image with an extreme aspect ratio.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/developers.google.com\/search\/docs\/appearance\/google-images\"><sup>[1]<\/sup><\/a><\/p>\n<blockquote>\n<p>Images are one of the most common WordPress performance optimization issues I come across with my client websites, but it\u2019s usually an easy fix. By uploading them at the right size, using next-gen formats, compressing them, and applying lazy-loading to those below the fold, you\u2019ll be in the green!<\/p>\n<p>\u2014 Lucio Laria, Onze Agence SEO <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/imagify.io\/blog\/image-optimization-seo\/\"><sup>[7]<\/sup><\/a><\/p>\n<\/blockquote>\n<h2>Startup priority workflow: fix high-impact images first<\/h2>\n<p><strong>[ORIGINAL]<\/strong> Use this staged checklist to work through a large image library when your team has limited time:<\/p>\n<ol>\n<li><strong>Linked logos and key product images.<\/strong> Fix your header logo, signup and demo buttons, app-store badges, and top product screenshots.<\/li>\n<li><strong>Informative content images.<\/strong> Rewrite alt text for blog diagrams, docs screenshots, and pricing visuals that carry useful information.<\/li>\n<li><strong>Decorative cleanup.<\/strong> Set redundant icons, dividers, and stock flourishes to alt=&#8221;&#8221; or move them to CSS.<\/li>\n<li><strong>Bulk remainder.<\/strong> Audit templates, old posts, and resized duplicates in batches.<\/li>\n<\/ol>\n<p>Neil Patel recommends starting with the most important products when working through a large image library.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/neilpatel.com\/blog\/image-alt-tags\/\"><sup>[8]<\/sup><\/a> In one review, more than 1,100 images across about 4% of Carhartt URLs crawled had missing alt text, a missing alt attribute, or alt text over 100 characters. The examined Carhartt product image without alt text did not appear in the cited product-image result, while examined Duluth Trading and Dickies images with alt text did appear.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/neilpatel.com\/blog\/image-alt-tags\/\"><sup>[8]<\/sup><\/a> The comparison was observational across three retailers, so other differences may also have affected which images appeared.<\/p>\n<p>Apply the same discipline to startup directories. Profile logos, product screenshots, and cover images need functional or informative alt text where fields allow, descriptive filenames before upload, and consistent URLs. Clear images can help usability and discovery, but they do not themselves create backlinks.<\/p>\n<p>When founders use <a href=\"https:\/\/www.srbooster.com\" target=\"_blank\" rel=\"noopener noreferrer\">SR Booster\u2019s manual startup directory submission service<\/a>, agents prepare directory listings and profile fields, then deliver a live report with profile links and screenshots. Founders still need to supply clean logo and screenshot files with descriptive names and one-sentence, alt-ready descriptions for directories that accept them.<\/p>\n<blockquote>\n<p>Images aren\u2019t just there to look pretty. Beyond best practices like format and alt attributes, I recommend treating them as standalone media. A well-designed infographic, for example, can easily be shared by others and earn backlinks \u2014 while also showing up in Google Images.<\/p>\n<p>\u2014 Nelly Kempf, SEO expert at Nellykempf.com <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/imagify.io\/blog\/image-optimization-seo\/\"><sup>[7]<\/sup><\/a><\/p>\n<\/blockquote>\n<p>A useful original visual may be referenced or shared and may appear in Google Images, but that possibility does not promise backlinks, rankings, or traffic. Measure off-page results separately.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/www.srbooster.com\/blog\/wp-content\/uploads\/2026\/10\/infographic_stat_grid_2026-10-09T17-17-31-1.jpg\" alt=\"Image Alt Text Statistics for Startup Founders\" style=\"max-width:100%;height:auto;\"><figcaption contenteditable=\"true\" class=\"figure-caption\">\n<p style=\"text-align: left\">Image Alt Text Statistics for Startup Founders<\/p>\n<\/figcaption><\/figure>\n<h2>Conclusion: make every image understandable and findable<\/h2>\n<p>Write <strong>helpful, contextual alt text<\/strong> for images that carry meaning, and keep it natural and free of stuffing.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/developers.google.com\/search\/docs\/appearance\/google-images\"><sup>[1]<\/sup><\/a> Give <strong>decorative images empty alt text<\/strong> so assistive technology can skip them.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.w3.org\/WAI\/tutorials\/images\/\"><sup>[4]<\/sup><\/a> Make images <strong>discoverable with clean HTML, descriptive names, and sitemaps<\/strong> where needed.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/developers.google.com\/search\/docs\/crawling-indexing\/sitemaps\/image-sitemaps\"><sup>[2]<\/sup><\/a><\/p>\n<p>Accessibility audits still find missing alt text on many home pages.<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/webaim.org\/projects\/million\/2025\/\"><sup>[3]<\/sup><\/a> Addressing the gap supports usability and helps search systems interpret images, but does not guarantee rankings.<\/p>\n<p>If low visibility and time-consuming manual submissions are holding you back, use this image checklist on your site and profiles. You can also explore <a href=\"https:\/\/www.srbooster.com\" target=\"_blank\" rel=\"noopener noreferrer\">SR Booster\u2019s manual directory submissions<\/a> as a separate off-page visibility effort.<\/p>\n<h2>FAQs<\/h2>\n<h3 data-faq-q>Does alt text on images help SEO?<\/h3>\n<p>Alt text gives Google useful context about an image alongside computer vision and page content. It can support image understanding and image search, but it does not guarantee rankings or traffic by itself.<\/p>\n<h3 data-faq-q>How do you write alt text for SEO?<\/h3>\n<p>Describe the essential information or function in natural language, taking the page context into account. Use keywords only when they fit, and describe a linked image\u2019s destination or action rather than its appearance.<\/p>\n<h3 data-faq-q>How many characters should image alt text be?<\/h3>\n<p>There is no strict Google limit, so aim for a concise, purposeful description. For a complex chart or infographic, keep the alt text brief and include the full data in nearby text.<\/p>\n<h3 data-faq-q>Does an image file name affect SEO?<\/h3>\n<p>Google treats a filename as a very light clue about an image\u2019s subject. Use a short, descriptive name instead of a camera default.<\/p>\n<h3 data-faq-q>How do you make alt text decorative?<\/h3>\n<p>Use an empty alt attribute, written as alt=&#8221;&#8221;. Screen readers then skip the image. Reserve this for images that add no information, such as dividers, background flourishes, or icons already described by nearby text.<\/p>\n<p><script type=\"application\/ld+json\">{  \"@context\": \"https:\/\/schema.org\",  \"@type\": \"FAQPage\",  \"mainEntity\": [    {      \"@type\": \"Question\",      \"name\": \"Does alt text on images help SEO?\",      \"acceptedAnswer\": {        \"@type\": \"Answer\",        \"text\": \"Alt text gives Google useful context about an image alongside computer vision and page content. 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Image SEO means helping Google discover images and helping Google and users understand&hellip;<\/p>\n","protected":false},"author":1,"featured_media":83,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-87","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Image SEO: How to Write Alt Text That Ranks<\/title>\n<meta name=\"description\" content=\"Learn how alt text, filenames and sitemaps help Google understand images, plus simple fixes startups can apply quickly.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.srbooster.com\/blog\/image-seo-how-to-write-alt-text\/\" 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