# Do images keep their SEO after a website migration? > Images keep their SEO after a migration only if you move them deliberately, because four things commonly break. First, the images stay on the old server while the new site links back to them, so they vanish the moment the old site is shut down. Second, the image URLs change on the new platform without a 301, so the addresses that ranked in image search become 404s. Third, the alt text, filenames, and captions are lost in the move, so the labels that told search what each image showed disappear. Fourth, the images are left out of the new sitemap, so search is slow to rediscover them. The fix mirrors the problems: move the actual image files to the new site, keep their alt text and filenames, redirect changed image URLs, and include images in the new sitemap. Images carry real search value through image results and through the pages they sit on, so they deserve the same care as text. WPBuildAI scans your site and returns the images along with their alt text and URLs, so nothing is left behind or stripped of its labels. Source: https://wpbuildai.com/do-images-keep-seo-after-website-migration/ By lawrence-arya ยท 2026-06-10 --- Images keep their SEO after a migration only if you move them deliberately, because four things commonly break and each one quietly costs you. First, the images stay on the old server while the new site links back to them, so they vanish the moment the old site is shut down. Second, the image URLs change on the new platform without a 301, so the addresses that ranked in image search turn into 404s. Third, the alt text, filenames, and captions are lost in the move, so the labels that told search what each image showed disappear. Fourth, the images are left out of the new sitemap, so search is slow to rediscover them. The fix mirrors the problems: move the actual files, keep their labels, redirect changed image URLs, and include images in the new sitemap. Images carry real search value, through image results and through the pages they sit on, so they deserve the same care as text. WPBuildAI scans your site and returns the images along with their alt text and URLs, so nothing is left behind or stripped of its labels. Image delivery is an active area rather than a settled one: WordPress [7.1, planned for 19 August 2026](https://make.wordpress.org/core/2026/06/19/roadmap-to-7-1/), brings Enhanced Responsive Images so browsers download more appropriately sized files, which is worth accounting for if you are comparing image performance before and after a move. ## Images carry real search value It is easy to treat images as decoration, but they earn search value in two ways, and a migration can lose both. Directly, images appear in image search, where the image URL, filename, and alt text decide whether a picture surfaces for a query. Indirectly, images contribute to the page they live on, supporting the content and the experience. Because the value is real, losing images in a move is not cosmetic; it removes a source of visibility and weakens the pages that relied on them. Recognizing that images are content, not filler, is what justifies giving them the same migration discipline you give your text. ## Failure one: images left on the old server The most common and most damaging mistake is leaving the image files on the old server. When the new site references images by their old addresses, everything looks fine while both sites are live, so the move appears successful. Then the old site is shut down, and every one of those images breaks at once, leaving blank spaces across the new pages and dropping the images from search, which can no longer fetch them. The lesson is blunt: move the actual image files to the new site, do not link back to the old one. Web Almanac 2024 ([HTTP Archive](https://almanac.httparchive.org/en/2024/)) shows how image heavy modern pages are, so there are almost always more files to move than a quick look suggests. ## Failure two: image URLs change without redirects The second failure is the URL one, the same problem text pages face. A new platform usually stores images at new paths, so the image addresses change. If an old image URL that ranked in image search or was linked from another site changes without a 301, it becomes a 404 and loses that accumulated value. The remedy is to redirect changed image URLs to their new locations, exactly as you would redirect a page, following the same logic in the [site move guide](https://developers.google.com/search/docs/crawling-indexing/site-move-with-url-changes). To do that you need a list of the old image URLs, which is part of a complete URL inventory from [find and extract all URLs](/find-extract-all-urls-website-301-redirects). Image URLs are addresses with value, and value at a changed address needs a redirect. ## Failure three: lost alt text and filenames The third failure is the loss of labels. Alt text, filenames, and captions describe what an image shows, and they are how search understands an image beyond its pixels. A careless export or a platform change can strip these, leaving images present but unlabeled, which weakens their chance of ranking in image search and removes the accessibility benefit for readers. Because the labels are invisible in the layout, this loss is easy to miss; the images appear, so the move looks complete. Carry alt text, filenames, and captions across with the images, and confirm on the new site that they are still attached. Descriptive labels are part of an image's SEO, not an optional extra. ## Failure four: images left out of the sitemap The fourth failure is discovery. After a move, search needs to find the images at their new locations, and a sitemap that lists images speeds that up. If the new sitemap omits images, or no image information is provided, rediscovery is slower and some images may be overlooked for a time. Including images in the new sitemap tells search where they now live, shortening the gap between launch and reindexing. This is the same discovery logic that applies to pages, applied to media. It is a small step that closes the loop after you have moved the files, kept the labels, and set the redirects. ## Do not let the move slow your images down A migration is also a moment when image performance can quietly worsen, which affects experience and, through it, SEO. If the new platform serves images at the wrong size, drops compression, or loads them inefficiently, pages get slower, and speed is measured by metrics like those in [Web Vitals](https://web.dev/articles/vitals/). So while you are moving images, it is worth confirming they are served at sensible sizes and formats on the new site, rather than copied across as is and left heavier than they need to be. Keeping the images is the priority; serving them well is the bonus that protects the page experience you are migrating. ## Steps to keep image SEO through a migration 1. **Inventory your images** and their URLs, alt text, and filenames before moving. 2. **Move the actual image files** to the new site, not links to the old one. 3. **Keep alt text, filenames, and captions** attached on the new platform. 4. **Set 301s** for any image URLs that change. 5. **Include images in the new sitemap** so search rediscovers them quickly. 6. **Confirm after launch** that images load from the new site, with labels intact. ## Worked example: migrating an image heavy gallery Imagine a photography studio moving a portfolio with hundreds of images. They begin by inventorying every image with its URL, alt text, and filename. They move the files themselves to the new platform rather than referencing the old host, and they carry the alt text and filenames across so each image stays labeled. Because the new platform stores images at new paths, they set 301s from the old image URLs, prioritizing the ones that drove image search traffic, since that traffic is concentrated, as the [Ahrefs study](https://ahrefs.com/blog/search-traffic-study/) shows. They add images to the new sitemap and, before closing the old site, confirm every image loads from the new location with its label intact. The portfolio keeps its image search visibility because the files, labels, addresses, and discovery all moved together. ## Limitation: moving images cannot fix weak images It is fair to note the boundary. Carrying images across correctly preserves the SEO they already had; it does not manufacture new value for images that never had any. An image with no descriptive alt text, a meaningless filename, or low relevance to its page was not contributing much, and moving it carefully keeps it at the same modest level rather than improving it. Migration is the time to preserve what works and, optionally, to improve labels and sizes, but the move itself is preservation, not promotion. If images are broken after a move despite your care, the cause is usually one of the four failures above, and broken references specifically are covered in [fix broken links after a migration](/fix-broken-links-wordpress-after-migration). ## Common mistakes - Leaving image files on the old server, so they break when it closes. - Letting image URLs change without 301s, losing image search value. - Dropping alt text, filenames, and captions, leaving images unlabeled. - Omitting images from the new sitemap, slowing rediscovery. - Copying images across as is and making the new pages slower. ## Key points Images keep their SEO after a migration only when you carry them across properly. They lose it when they are left on the old server, when their URLs change without a 301, when alt text and filenames are dropped, or when they are left out of the new sitemap. So move the actual files, keep the labels attached, redirect changed image addresses, and list images in the new sitemap, then confirm after launch that images load from the new site with their labels intact. Treat images as content with real value, both in image search and on the pages they support, not as decoration. While moving them, serve them at sensible sizes so the new pages are not slower, a concern explored in [why a site is slow after a redesign](/why-is-my-website-slow-after-redesign). WPBuildAI scans your site and returns the images along with their alt text and URLs, so nothing is left behind or stripped of its labels. Send your web address for a free analysis. Not affiliated with WordPress, Lovable, Webflow, Shopify, Wix, or Squarespace.