{"id":11939,"date":"2026-08-22T23:48:09","date_gmt":"2026-08-23T04:48:09","guid":{"rendered":"https:\/\/infiniteuploads.com\/?post_type=docs&#038;p=11939"},"modified":"2026-08-23T17:13:17","modified_gmt":"2026-08-23T22:13:17","password":"","slug":"how-image-optimization-works","status":"publish","type":"docs","link":"https:\/\/infiniteuploads.com\/docs\/image-optimization\/how-image-optimization-works\/","title":{"rendered":"How Image Optimization Works"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><p class=\"wp-block-paragraph\">When Image Optimization is on, Infinite Uploads compresses your images and converts them to modern formats as they are delivered from the CDN. The visitor's browser receives a smaller, faster file, while your original stays exactly as you uploaded it.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Note: Image Optimization is included with the Business plan. If your site is on the Starter plan, the <strong>Image Optimization<\/strong> section of the <strong>Account &amp; Settings<\/strong> module shows an upgrade notice in place of the settings. See our <a href=\"https:\/\/infiniteuploads.com\/pricing\/\">pricing page<\/a> to compare plans.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-happens-on-delivery\">What happens on delivery<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Your images are stored in the Infinite Uploads cloud and served through our global CDN. With optimization enabled, the first time a visitor requests an image we:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Choose the best format<\/strong> their browser supports: AVIF, then WebP, then the original.<\/li>\n\n\n\n<li><strong>Right-size it<\/strong> to your maximum width so a large photo isn't sent at full resolution to a small screen.<\/li>\n\n\n\n<li><strong>Compress it<\/strong> at your chosen optimization level and strip unnecessary metadata.<\/li>\n\n\n\n<li><strong>Cache the result<\/strong> on the CDN so every visitor after that gets it instantly.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The original file in your Media Library is never modified. Optimization happens only on the copy that's delivered. See <a href=\"#\">Does Image Optimization change my original files?<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"which-images-are-optimized\">Which images are optimized<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Optimization applies to standard raster photos and graphics: <strong>JPEG<\/strong> and <strong>PNG<\/strong> files. Other file types (such as SVG and GIF) are always delivered as-is, untouched.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"automatic-fallback-keeps-every-visitor-covered\">Automatic fallback keeps every visitor covered<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Not every browser supports AVIF or WebP. That's fine. We read what each visitor's browser accepts and only send a next-gen format when it's supported. Older browsers automatically receive the original JPEG or PNG, so no visitor ever sees a broken image.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"it-s-built-in-with-no-separate-plugin\">It's built in, with no separate plugin<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Because optimization happens at delivery, there's nothing to install alongside Infinite Uploads and nothing to run in the background on your server. In fact, we recommend turning off separate image-optimization plugins to avoid compressing images twice. See <a href=\"#\">Do I still need Smush, ShortPixel, or EWWW?<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-it-works-this-way\">Why it works this way<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Optimizing at delivery has three big advantages over rewriting your files:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Your originals are safe.<\/strong> You can change your settings, or turn optimization off entirely, and your source images are always intact.<\/li>\n\n\n\n<li><strong>Every visitor gets the ideal file.<\/strong> A phone on a slow connection and a desktop on fiber can receive different formats and sizes from the same original, automatically.<\/li>\n\n\n\n<li><strong>No load on your site.<\/strong> The compression runs on our CDN network, not your WordPress host, so enabling it never slows down your site.<\/li>\n<\/ul>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p>When Image Optimization is on, Infinite Uploads compresses your images and converts them to modern formats as they are delivered from the CDN. The visitor&#8217;s browser receives a smaller, faster file, while your original stays exactly as you uploaded it. Note: Image Optimization is included with the Business plan. If your site is on the [&hellip;]<\/p>\n","protected":false},"author":3787,"featured_media":0,"template":"","meta":{"_acf_changed":false,"wds_primary_doc_category":0,"wds_primary_doc_tag":0,"footnotes":""},"doc_category":[171],"doc_tag":[],"class_list":["post-11939","docs","type-docs","status-publish","hentry","doc_category-image-optimization"],"acf":[],"year_month":"2026-09","word_count":415,"total_views":"44","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"Blake Whittle","author_nicename":"blakew","author_url":"https:\/\/infiniteuploads.com\/blog\/author\/blakew\/"},"doc_category_info":[{"term_name":"Image optimization","term_url":"https:\/\/infiniteuploads.com\/docs-category\/image-optimization\/"}],"doc_tag_info":[],"knowledge_base_info":[],"knowledge_base_slug":[],"_links":{"self":[{"href":"https:\/\/infiniteuploads.com\/api\/wp\/v2\/docs\/11939","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/infiniteuploads.com\/api\/wp\/v2\/docs"}],"about":[{"href":"https:\/\/infiniteuploads.com\/api\/wp\/v2\/types\/docs"}],"author":[{"embeddable":true,"href":"https:\/\/infiniteuploads.com\/api\/wp\/v2\/users\/3787"}],"version-history":[{"count":1,"href":"https:\/\/infiniteuploads.com\/api\/wp\/v2\/docs\/11939\/revisions"}],"predecessor-version":[{"id":12298,"href":"https:\/\/infiniteuploads.com\/api\/wp\/v2\/docs\/11939\/revisions\/12298"}],"wp:attachment":[{"href":"https:\/\/infiniteuploads.com\/api\/wp\/v2\/media?parent=11939"}],"wp:term":[{"taxonomy":"doc_category","embeddable":true,"href":"https:\/\/infiniteuploads.com\/api\/wp\/v2\/doc_category?post=11939"},{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/infiniteuploads.com\/api\/wp\/v2\/doc_tag?post=11939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}