{"id":52,"date":"2026-06-18T19:39:05","date_gmt":"2026-06-18T19:39:05","guid":{"rendered":"https:\/\/allmediatools.com\/blog\/resize-image-online-free\/"},"modified":"2026-06-18T19:39:05","modified_gmt":"2026-06-18T19:39:05","slug":"resize-image-online-free","status":"publish","type":"post","link":"https:\/\/allmediatools.com\/blog\/resize-image-online-free\/","title":{"rendered":"How to Resize an Image Online Free"},"content":{"rendered":"\n

Resizing changes an image’s pixel dimensions. This is different from compression \u2014 compression reduces file size while keeping dimensions the same. You need to resize when an image is too large for its destination, or when a platform has specific dimension requirements.<\/p>\n\n\n\n

\n\n\n\n

Resize Images Free with AllMediaTools<\/h2>\n\n\n\n
    \n
  1. Open AllMediaTools Image Compressor<\/a>.<\/li>\n\n\n\n
  2. Upload your image.<\/li>\n\n\n\n
  3. Set Max Width<\/strong> and\/or Max Height<\/strong> in pixels.<\/li>\n\n\n\n
  4. Enable Maintain Aspect Ratio<\/strong> to scale proportionally.<\/li>\n\n\n\n
  5. Click Compress \/ Resize<\/strong> and download.<\/li>\n<\/ol>\n\n\n\n
    \n
    Resize Image Free \u2192<\/a><\/div>\n<\/div>\n\n\n\n
    \n\n\n\n

    Standard Image Dimensions by Platform<\/h2>\n\n\n\n
    Platform \/ use<\/th>Recommended size<\/th><\/tr><\/thead>
    YouTube thumbnail<\/td>1280\u00d7720px<\/td><\/tr>
    Facebook cover<\/td>851\u00d7315px<\/td><\/tr>
    Instagram post (square)<\/td>1080\u00d71080px<\/td><\/tr>
    Instagram Stories \/ Reels<\/td>1080\u00d71920px<\/td><\/tr>
    Twitter\/X header<\/td>1500\u00d7500px<\/td><\/tr>
    Website hero (full-width)<\/td>1920\u00d71080px<\/td><\/tr>
    Blog post \/ Open Graph image<\/td>1200\u00d7630px<\/td><\/tr>
    Email header<\/td>600px wide<\/td><\/tr>
    Email signature logo<\/td>200\u2013300px wide<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
    \n\n\n\n

    Built-In OS Methods<\/h2>\n\n\n\n

    Windows \u2014 Paint<\/h3>\n\n\n\n

    Open in Paint \u2192 Home \u2192 Resize \u2192 Pixels<\/strong> \u2192 enter Width \u2192 OK \u2192 File \u2192 Save As<\/strong>.<\/p>\n\n\n\n

    Mac \u2014 Preview<\/h3>\n\n\n\n

    Open in Preview \u2192 Tools \u2192 Adjust Size<\/strong> \u2192 set Width (height locks automatically) \u2192 File \u2192 Export<\/strong>.<\/p>\n\n\n\n

    \n\n\n\n

    The Correct Web Image Workflow<\/h2>\n\n\n\n
      \n
    1. Resize<\/strong> to max display width (e.g. 1200px for blog posts)<\/li>\n\n\n\n
    2. Convert to WebP<\/strong> using AllMediaTools Image Converter<\/a><\/li>\n\n\n\n
    3. Compress<\/strong> to under 100KB using AllMediaTools Image Compressor<\/a><\/li>\n<\/ol>\n\n\n\n
      \n\n\n\n

      Frequently Asked Questions<\/h2>\n\n\n\n

      What’s the difference between resizing and cropping?<\/h3>\n\n\n\n

      Resizing scales the full image proportionally. Cropping removes parts of the image to change composition or match a specific aspect ratio. Most tools offer both.<\/p>\n\n\n\n

      Can I make an image larger without losing quality?<\/h3>\n\n\n\n

      Standard upscaling always reduces sharpness \u2014 software invents pixel data that wasn’t there. AI upscalers (Topaz Gigapixel, ESRGAN) produce better results for enlargement. For print, always start with the highest resolution source.<\/p>\n\n\n\n

      Does resizing reduce file size?<\/h3>\n\n\n\n

      Yes \u2014 significantly. A 4000\u00d73000px image has 12 million pixels; a 1200\u00d7900px version has 1.08 million \u2014 91% fewer pixels to store. See our guide: How to Compress Images Without Losing Quality<\/a>.<\/p>\n\n","protected":false},"excerpt":{"rendered":"

      Resizing changes an image’s pixel dimensions. This is different from compression \u2014 compression reduces file size while keeping dimensions the same. You need to resize when an image is too large for its destination, or when a platform has specific dimension requirements. Resize Images Free with AllMediaTools Standard Image Dimensions by Platform Platform \/ use … Read more<\/a><\/p>\n","protected":false},"author":0,"featured_media":53,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[16],"tags":[104,106,102,101,103,105],"class_list":["post-52","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-image-optimization","tag-change-image-dimensions","tag-crop-image-free","tag-image-resizer","tag-resize-image-online","tag-resize-photo-free","tag-scale-image-online"],"jetpack_featured_media_url":"https:\/\/allmediatools.com\/blog\/wp-content\/uploads\/2026\/06\/seo-publish-resize-image-online-free.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/allmediatools.com\/blog\/wp-json\/wp\/v2\/posts\/52","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/allmediatools.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/allmediatools.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/allmediatools.com\/blog\/wp-json\/wp\/v2\/comments?post=52"}],"version-history":[{"count":0,"href":"https:\/\/allmediatools.com\/blog\/wp-json\/wp\/v2\/posts\/52\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/allmediatools.com\/blog\/wp-json\/wp\/v2\/media\/53"}],"wp:attachment":[{"href":"https:\/\/allmediatools.com\/blog\/wp-json\/wp\/v2\/media?parent=52"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/allmediatools.com\/blog\/wp-json\/wp\/v2\/categories?post=52"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/allmediatools.com\/blog\/wp-json\/wp\/v2\/tags?post=52"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}