Product images can make or break your online sales, but most store owners don’t know how to optimize them properly. Poorly optimized product images slow down your site, hurt your search rankings, and cost you customers who can’t see your products clearly on different devices.
This guide is for e-commerce business owners, digital marketers, and anyone managing product catalogs on platforms like Amazon, Shopify, WooCommerce, or Wix. You’ll learn exactly how to optimize product images for better SEO, faster loading speeds, and perfect display across all platforms.
We’ll walk you through choosing the right file formats and compression techniques that keep your images crystal clear while loading lightning fast. You’ll also discover proven SEO strategies that help your product images appear in search results, plus advanced loading techniques that can cut your page load times in half. Finally, we’ll cover how to ensure your images look perfect whether customers view them on desktop, mobile, or tablet.
Choose the Right Image File Formats for Maximum Performance
Use JPEG for photographs and complex images with many colors
JPEG stands as the gold standard for product image optimization when dealing with photographs and complex visuals. This format excels at handling images with gradual color transitions, detailed textures, and rich color palettes that are common in product photography. For e-commerce platforms like Amazon, Shopify, and WooCommerce, JPEG delivers the perfect balance of file size and visual quality.
The compression algorithm in JPEG works by analyzing color variations and reducing redundant data while preserving the most visually important details. This makes it ideal for showcasing products like clothing, food items, cosmetics, and electronics where color accuracy and detail matter most. Amazon product image optimization typically relies heavily on JPEG because it maintains product colors accurately while keeping file sizes manageable for fast loading.
When using JPEG for product images, aim for quality settings between 80-95% to maintain professional appearance while achieving reasonable compression. Most Shopify product image specs recommend JPEG for primary product photos, as the format loads quickly across all devices and browsers.
Select PNG for images requiring transparency or simple graphics
PNG format becomes essential when your product images need transparent backgrounds or contain simple graphics with sharp edges. This format uses lossless compression, meaning no image data gets discarded during the compression process. For e-commerce product images best practices, PNG works perfectly for logos, icons, product silhouettes, and any image where you need to remove the background completely.
Many successful product optimization examples showcase PNG usage for lifestyle shots where products need to be layered over different backgrounds or integrated into various marketing materials. The transparency feature makes PNG invaluable for creating versatile product visuals that work across multiple platforms and marketing channels.
PNG also excels when dealing with images that have limited color palettes or sharp color boundaries. Product graphics, diagrams, and screenshots benefit from PNG’s ability to preserve crisp edges and solid colors without compression artifacts.
Leverage WebP format for superior compression and quality balance
WebP represents a significant advancement in image optimization for seo, offering up to 30% smaller file sizes compared to JPEG while maintaining equivalent visual quality. Google developed this format specifically to address the growing need for faster-loading web content, making it particularly valuable for optimize product page strategies.
Modern browsers including Chrome, Firefox, Safari, and Edge now support WebP, making it a practical choice for product image seo initiatives. The format combines the best features of both JPEG and PNG – efficient compression for complex images and transparency support when needed.
Implementing WebP in your image optimization workflow can dramatically improve page load times, which directly impacts both user experience and search engine rankings. Many automated product image optimization software solutions now include WebP conversion as a standard feature, recognizing its importance for competitive e-commerce performance.
Implement AVIF for next-generation browsers and optimal file sizes
AVIF emerges as the cutting-edge solution for product image optimization services, delivering up to 50% smaller file sizes than JPEG while maintaining superior image quality. This next-generation format uses advanced compression techniques that excel particularly well with product photography containing fine details and complex color gradients.
Browser support for AVIF continues expanding rapidly, with Chrome, Firefox, and Opera leading adoption. While Safari and Edge are still implementing full support, the format’s benefits make it worth considering for progressive enhancement strategies. Smart implementation involves serving AVIF to supported browsers while falling back to WebP or JPEG for others.
The format’s exceptional compression efficiency makes it particularly valuable for mobile e-commerce experiences where data usage and loading speed directly impact conversion rates. Early adopters of AVIF report significant improvements in Core Web Vitals scores, which Google increasingly uses as ranking factors.
| Format | Best Use Case | File Size | Quality | Transparency | Browser Support |
|---|---|---|---|---|---|
| JPEG | Complex photos | Medium | High | No | Universal |
| PNG | Simple graphics, transparency | Large | Lossless | Yes | Universal |
| WebP | Modern web optimization | Small | High | Yes | 95%+ |
| AVIF | Next-gen performance | Smallest | Highest | Yes | Growing |
Compress Images Without Sacrificing Visual Quality
Apply lossy compression techniques for dramatic file size reduction
Lossy compression works by permanently removing image data that the human eye typically can’t detect, making it perfect for product image optimization across e-commerce platforms. JPEG compression stands as the gold standard for photographic product images, often reducing file sizes by 80-90% while maintaining visual quality that customers find acceptable.
The key lies in understanding compression levels and their impact on your ecommerce product images. Most image editing software offers quality settings from 0-100, with the sweet spot typically falling between 75-85 for product photography. At these levels, you’ll achieve significant file size reductions without noticeable quality degradation on most devices.
When optimizing Amazon product images or Shopify product images, consider the viewing context. Main hero images deserve higher quality settings (85-95) since they’re the first thing customers see. Secondary images showing details, packaging, or lifestyle shots can handle more aggressive compression (70-80) without impacting conversion rates.
WebP format takes lossy compression further, delivering 25-35% smaller files than JPEG while maintaining similar visual quality. Browser support has reached the point where implementing WebP makes sense for most product optimization strategies, especially when paired with JPEG fallbacks.
Advanced techniques like chroma subsampling reduce color information more aggressively than brightness data, leveraging how human vision works. This approach particularly benefits clothing and lifestyle product photography where slight color shifts are less critical than maintaining sharp edges and text readability.
Use lossless compression to maintain perfect image integrity
Lossless compression preserves every pixel of your original image while still achieving meaningful file size reductions. PNG format excels here, making it ideal for product images with transparent backgrounds, text overlays, or graphics that require pixel-perfect accuracy.
For Shopify product image optimization, lossless PNG compression becomes essential when dealing with product mockups, infographics, or images with sharp color transitions. Tools like OptiPNG, PNGOUT, and modern algorithms can reduce PNG file sizes by 10-30% without any quality loss.
The trade-off with lossless compression is file size – these images will always be larger than their lossy counterparts. However, certain scenarios demand this approach:
- Product images with transparency effects
- Images containing important text or fine details
- Graphics with solid colors and sharp edges
- Images requiring post-processing flexibility
- Brand logos and watermarks
Modern lossless formats like AVIF-lossless and JPEG-XL offer superior compression ratios compared to traditional PNG, though browser support varies. When planning your image optimization for SEO strategy, consider implementing these formats progressively as support improves.
Find the sweet spot between file size and visual appeal
Balancing file size with visual quality requires systematic testing and understanding your audience’s device capabilities. Start by establishing quality benchmarks using A/B testing to determine the minimum acceptable quality level for your specific product image SEO goals.
Create a testing matrix comparing different compression levels across various device types and screen sizes. What looks acceptable on a desktop monitor might appear degraded on a high-resolution mobile display. Woocommerce product image sizes and Shopify product image specs provide starting points, but real-world testing reveals the optimal balance.
| Compression Level | File Size Reduction | Best Use Case |
|---|---|---|
| 95% Quality | 30-50% | Hero images, luxury products |
| 85% Quality | 60-75% | Standard product photos |
| 75% Quality | 75-85% | Secondary images, thumbnails |
| 65% Quality | 85-90% | Background images, textures |
Consider implementing progressive JPEG loading for larger product images. This technique displays a low-quality version immediately, then progressively enhances quality as more data loads. Users perceive faster loading times while still receiving full-quality images.
The “sweet spot” also depends on your target market and typical connection speeds. Amazon product image optimization for international markets might require more aggressive compression than domestic-only stores.
Automate compression workflows for consistent results
Manual image optimization becomes unsustainable as product catalogs grow. Automated product image optimization software handles bulk processing while maintaining consistent quality standards across your entire inventory.
Build compression workflows using tools like ImageMagick, Squoosh API, or cloud services like Cloudinary. These systems can automatically detect image content and apply appropriate compression settings. For example, product photos get JPEG compression while graphics with transparency receive PNG optimization.
Set up conditional logic in your automation:
- Images over 2MB get aggressive compression
- Images with detected text receive lossless treatment
- Hero images maintain higher quality than thumbnails
- Mobile versions get additional optimization
Shopify product image optimization benefits from automated workflows that resize, compress, and format images during upload. This ensures every product image meets platform requirements without manual intervention.
TikTok Shop product image optimization automation and similar platform-specific tools can adapt images to multiple requirements simultaneously. Upload once, and the system generates optimized versions for different placements and devices.
Consider implementing monitoring systems that track compression ratios and quality scores across your catalog. This data helps refine automation rules and identify images that might need manual attention. Regular audits ensure your ecommerce product image optimization services maintain effectiveness as your catalog evolves.
Implement Proper Image Sizing and Responsive Design
Create multiple image sizes for different device breakpoints
Different devices display your product images at vastly different screen sizes. A smartphone might show your image at 320px wide, while a desktop monitor could display it at 1200px or larger. Creating multiple image sizes ensures each device gets the most appropriate version for optimal loading speed and visual quality.
Start by identifying your key breakpoints – typically mobile (320-768px), tablet (768-1024px), and desktop (1024px+). For each breakpoint, create optimized versions of your product images. A common approach involves generating at least three sizes: small (400px), medium (800px), and large (1200px) versions of each product image.
Modern e-commerce platforms like Shopify automatically generate multiple image sizes when you upload product images. The platform creates variants ranging from 100px thumbnails up to 2048px versions, giving you flexibility across different display contexts.
Use the HTML srcset attribute to serve different image sizes based on screen width:
＜img src="product-medium.jpg" srcset="product-small.jpg 400w, product-medium.jpg 800w, product-large.jpg 1200w" sizes="(max-width: 768px) 100vw, 50vw" alt="Product name"＞
Use CSS techniques to ensure images scale perfectly across screens
CSS provides powerful tools for making product images responsive without compromising their visual appeal. The foundation starts with setting max-width: 100% and height: auto on your images, preventing them from exceeding their container’s width while maintaining proper proportions.
Container queries offer more sophisticated control over image scaling. Instead of relying solely on viewport dimensions, you can adjust image behavior based on their container size:
.product-image-container {
container-type: inline-size;
}
@container (max-width: 400px) {
.product-image {
width: 100%;
object-fit: contain;
}
}
The object-fit property controls how images fill their containers. Use object-fit: cover for hero images where you want to fill the entire space, or object-fit: contain for product detail images where showing the complete product is essential.
CSS Grid and Flexbox provide excellent frameworks for responsive image layouts. Grid allows precise control over image placement across different screen sizes, while Flexbox excels at creating flowing, adaptive image galleries.
Prevent layout shifts with proper aspect ratio maintenance
Layout shifts create jarring user experiences and hurt your Core Web Vitals scores. When images load without predefined dimensions, content jumps around as each image appears. This problem becomes particularly noticeable on slower connections where images load progressively.
The CSS aspect-ratio property provides an elegant solution for modern browsers:
.product-image {
aspect-ratio: 1 / 1; /* Square images */
width: 100%;
object-fit: cover;
}
For older browser support, use the padding-bottom technique to maintain aspect ratios:
.image-container {
position: relative;
width: 100%;
padding-bottom: 100%; /* Creates 1:1 aspect ratio */
}
.product-image {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
object-fit: cover;
}
Always specify width and height attributes in your HTML, even when using CSS for styling. This gives browsers immediate information about image dimensions, allowing them to reserve the correct amount of space before the image loads.
Optimize images for retina and high-DPI displays
High-DPI displays show four times more pixels than standard screens, making standard images appear blurry or pixelated. Retina optimization requires serving higher resolution images to these displays while maintaining reasonable file sizes for standard screens.
The device pixel ratio determines how many physical pixels represent each CSS pixel. Most modern smartphones have ratios of 2x or 3x, meaning a 300px CSS image needs 600px or 900px actual pixels to appear crisp.
Implement retina optimization using the srcset attribute with pixel density descriptors:
＜img src="product-400.jpg" srcset="product-400.jpg 1x, product-800.jpg 2x, product-1200.jpg 3x" alt="Product image"＞
For background images, use media queries targeting specific pixel densities:
.hero-image {
background-image: url('product-400.jpg');
}
@media (-webkit-min-device-pixel-ratio: 2),
(min-resolution: 192dpi) {
.hero-image {
background-image: url('product-800.jpg');
}
}
Balance image quality with file size by using higher compression on retina versions. Users on high-DPI displays often accept slightly more compression in exchange for crisp detail, especially on mobile devices where bandwidth might be limited.
Consider using vector formats like SVG for logos and simple graphics. SVG files scale perfectly to any resolution without quality loss and typically have smaller file sizes than bitmap alternatives for simple imagery.
Master SEO-Friendly Image Optimization Techniques
Write compelling and keyword-rich alt text descriptions
Alt text serves as your product images’ voice to search engines and visually impaired users. Every product image needs descriptive, keyword-rich alt text that accurately conveys what’s shown in the image. Instead of generic descriptions like “product image,” craft specific alt text that includes your target keywords naturally.
For Amazon product image optimization, describe the product’s key features, color, and main benefits. A running shoe’s alt text might read “lightweight blue mesh running shoes with air cushioning for men” rather than simply “running shoes.” This approach helps search engines understand your product while improving accessibility.
Your alt text should be between 100-125 characters to avoid truncation. Include your primary keywords, but avoid keyword stuffing that makes the description sound unnatural. Each image on your product page should have unique alt text that describes its specific angle or feature. Main product shots need comprehensive descriptions, while detail shots can focus on specific elements like “waterproof zipper close-up on hiking jacket.”
Use descriptive file names that search engines can understand
Search engines read your image file names before they even load the image. Generic names like “IMG_001.jpg” or “DSC_1234.jpg” waste valuable SEO opportunities. Rename your product images with descriptive, keyword-rich file names that clearly indicate what the image contains.
Structure your file names using hyphens to separate words, as search engines read hyphens as spaces. A file name like “red-leather-handbag-front-view.jpg” tells search engines exactly what to expect. Include your primary keywords naturally within the file name, but keep it concise and relevant.
For Shopify product image optimization, establish a consistent naming convention across your store. Use your product name, color, and view type in a standardized format. This consistency helps with organization and provides search engines with clear signals about your product catalog structure. Avoid special characters, spaces, and capital letters in file names, as these can cause technical issues.
Structure image URLs for better crawlability and indexing
Clean, descriptive image URLs help search engines crawl and index your product images more effectively. Your URL structure should mirror your site’s hierarchy and include relevant keywords. Instead of auto-generated URLs with random numbers, create URLs that describe the image path logically.
A well-structured image URL for e-commerce product images might look like: “yourstore.com/products/womens-clothing/dresses/blue-summer-dress-front.jpg” This structure tells search engines the category, product type, and specific image details.
For WooCommerce product image optimization, organize your media library with folder structures that match your product categories. This organization creates logical URL paths that both users and search engines can easily follow. Consistent URL structures across your product catalog also help with image sitemap creation and overall site architecture.
Avoid changing image URLs once they’re established, as this can break existing search engine indexing. If you must change URLs, implement proper 301 redirects to maintain your SEO value and prevent broken image links that could hurt your search rankings.
Leverage Advanced Loading Strategies for Speed
Implement Lazy Loading to Defer Off-Screen Image Loading
Lazy loading transforms how your product images load, dramatically improving initial page speed by only loading images when users actually scroll to see them. This technique prevents unnecessary bandwidth consumption and reduces server requests, making it especially valuable for ecommerce sites with multiple product images on category pages.
Modern browsers support native lazy loading through the loading=”lazy” attribute, which you can add directly to your image tags. For Shopify stores, this means faster product page loading and better user experience across all devices. The technique works by monitoring scroll position and loading images just before they enter the viewport.
Popular JavaScript libraries like Intersection Observer API provide more control over lazy loading behavior. You can customize trigger distances, add smooth fade-in effects, and even implement skeleton placeholders while images load. Amazon product image optimization benefits significantly from lazy loading since their product pages often contain numerous high-resolution images.
Use Preloading for Critical Above-the-Fold Images
Strategic preloading ensures your most important product images appear instantly when customers visit your pages. Focus on preloading hero images, primary product shots, and any images visible without scrolling on desktop and mobile devices.
The rel=”preload” link tag tells browsers to prioritize specific images during page loading. For Shopify product image optimization, preload your main product image and first thumbnail to create seamless browsing experiences. This technique reduces perceived loading time and prevents layout shifts that frustrate customers.
WooCommerce stores benefit from preloading product gallery images that customers frequently interact with. Consider preloading the next few images in product carousels or image sequences to enable smooth navigation between product views.
Apply Progressive Loading Techniques for Better User Experience
Progressive loading presents low-quality image placeholders first, then gradually enhances them with full-resolution versions. This approach keeps users engaged by showing something immediately rather than blank spaces or loading spinners.
Base64-encoded placeholder images or blur-up techniques create smooth visual transitions. Many ecommerce product image optimization services implement progressive JPEG formats that load in multiple passes, revealing increasing detail levels as more data downloads.
WebP and AVIF formats support progressive loading natively, making them excellent choices for modern product image optimization. These formats reduce file sizes while maintaining visual quality throughout the loading process.
| Loading Strategy | Best For | Performance Impact |
|---|---|---|
| Lazy Loading | Below-fold images | 40-60% faster initial load |
| Preloading | Critical hero images | Instant visibility |
| Progressive | Large product galleries | Smooth user experience |
Optimize Loading Priority Based on Image Importance
Smart priority assignment ensures critical product images load before decorative elements or secondary visuals. Assign highest priority to main product shots, medium priority to thumbnails and gallery images, and lowest priority to related product suggestions or promotional banners.
Use the importance attribute or CSS object-priority properties to guide browser loading decisions. Product images directly related to purchase decisions should load before lifestyle shots or brand imagery. This approach maximizes conversion potential by showing customers exactly what they’re buying as quickly as possible.
Walmart product image requirements and other major platforms prioritize main product images in their optimization guidelines. Follow similar strategies by loading product shots before packaging, instruction manuals, or secondary angles that support but don’t drive purchasing decisions.
Ensure Cross-Platform Compatibility and Performance
Test Image Display Across Different Browsers and Devices
Testing your product images across various browsers and devices is crucial for maintaining a consistent customer experience. Safari, Chrome, Firefox, and Edge all handle images differently, especially when it comes to newer formats like WebP or AVIF. Your shopify product images might look perfect in Chrome but appear distorted in older Safari versions.
Create a testing checklist that includes desktop browsers, mobile browsers, tablets, and different screen resolutions. Pay special attention to how your images render on high-DPI displays versus standard screens. Many e-commerce businesses discover that their carefully optimized product images appear pixelated on Retina displays because they didn’t test beyond their primary development environment.
Mobile testing deserves extra attention since mobile commerce continues to grow. Your product image size for website might work well on desktop, but mobile users could experience slow loading times or layout issues. Test your images on actual devices rather than just browser developer tools – real-world performance often differs from simulated environments.
Implement Fallback Options for Unsupported Formats
Smart fallback strategies protect your product image optimization efforts when browsers don’t support modern formats. While WebP offers excellent compression, older browsers might not display these images at all without proper fallbacks.
The HTML ＜picture＞ element provides the most robust solution for format fallbacks:
＜picture＞ ＜source srcset="product-image.avif" type="image/avif"＞ ＜source srcset="product-image.webp" type="image/webp"＞ ＜img src="product-image.jpg" alt="Product name"＞ ＜/picture＞
For platforms like Shopify, you might need to implement fallbacks through theme customization or apps. Amazon product images typically use JPEG as the standard, but if you’re using advanced formats elsewhere, always maintain JPEG or PNG versions as backups.
Consider implementing JavaScript-based detection for more complex scenarios. This approach lets you serve the best possible format while ensuring universal compatibility across all user environments.
Optimize for Social Media Platform Requirements
Each social media platform has specific image requirements that directly impact how your products appear when shared. Facebook prefers images at 1200×630 pixels for optimal sharing, while Instagram works best with square 1080×1080 images for posts and 1080×1920 for stories.
Pinterest favors vertical images with a 2:3 aspect ratio, making 1000×1500 pixels ideal for product pins. Twitter’s image requirements vary between timeline posts (1024×512) and cards (800×418). These platform-specific optimizations can significantly boost your product visibility and engagement rates.
| Platform | Recommended Size | Aspect Ratio | Format |
|---|---|---|---|
| 1200x630px | 1.91:1 | JPEG/PNG | |
| 1080x1080px | 1:1 | JPEG/PNG | |
| 1000x1500px | 2:3 | JPEG/PNG | |
| 1024x512px | 2:1 | JPEG/PNG |
Create platform-specific versions of your hero product images to maximize social media performance. Many businesses lose potential customers because their shared product images appear cropped or distorted on social platforms.
Maintain Consistent Branding Across All Digital Touchpoints
Brand consistency in product images builds trust and recognition across all platforms where your products appear. Your amazon product images should maintain the same visual style as your shopify product images and social media posts. This consistency includes background colors, lighting, angles, and overall aesthetic approach.
Develop a comprehensive style guide that covers image backgrounds, lighting conditions, product positioning, and color correction standards. Whether you’re shooting new products or optimizing existing images, this guide ensures every image reinforces your brand identity.
Cross-Platform Product Image Optimization
Consider how your images will appear in various contexts, from marketplace listings to email marketing campaigns. Your WooCommerce product image sizes might need adjustment for newsletter templates, while your TikTok shop product image optimization should account for the platform’s vertical video format and mobile-first audience.
Cross-platform branding extends beyond just visual consistency. Your image file naming conventions, alt text strategies, and metadata should align across all channels to support both SEO efforts and brand recognition.
Getting your product images right isn’t just about making them look good – it’s about creating a smooth experience that keeps customers engaged and search engines happy. The techniques we’ve covered, from choosing the right file formats and compressing images smartly to implementing responsive design and SEO-friendly practices, all work together to boost your site’s performance. When you nail the technical side with proper sizing and advanced loading strategies, you’re setting yourself up for faster page speeds, better search rankings, and images that look great whether someone’s browsing on their phone or desktop.
Start with the basics: audit your current images and see where you can make quick wins with compression and file format changes. These small tweaks often deliver the biggest impact on loading speeds. From there, work your way up to the more advanced strategies like lazy loading and cross-platform optimization. Your customers will notice the difference in how fast your site loads, and search engines will reward you with better visibility – it’s a win-win that’s definitely worth the effort.
FAQs
What image file formats work best for product photos?
JPEG is the best choice for most product photos because it provides good quality while keeping file sizes small. PNG works well when you need transparent backgrounds or very crisp details. WebP is a newer format that offers better compression than JPEG, but not all browsers support it yet.
How do I make my product images load faster without losing quality?
Compress your images before uploading them by reducing the file size to under 100KB when possible. Resize images to match the exact dimensions where they’ll be displayed rather than letting the website resize them. You can use free tools like TinyPNG or built-in compression features in photo editing software.
What size should my product images be for different platforms?
For websites, use 800×800 pixels for main product images and 300×300 pixels for thumbnails. Amazon requires at least 1000×1000 pixels for zoom features. Social media varies: Instagram works best with 1080×1080 pixels, while Facebook product photos should be 600×600 pixels minimum.
How do I write good alt text for my product images?
Describe what the product actually is and include important details like color, size, or key features. Keep it under 125 characters and avoid phrases like “image of” or “picture of.” For example, instead of “red shoe,” write “red leather running shoe with white sole.”
Should I include keywords in my image file names?
Yes, rename your image files with descriptive keywords before uploading. Instead of “IMG_1234.jpg,” use “blue-cotton-t-shirt-front-view.jpg.” Separate words with hyphens, keep names under 60 characters, and include your main product keywords naturally.
What’s the difference between lazy loading and regular image loading?
Lazy loading means images only load when someone scrolls down to see them, which makes your page load faster initially. Regular loading loads all images at once, which can slow down your page. Most modern websites use lazy loading to improve speed and user experience.
How many product images should I include on each product page?
Include at least 3-5 high-quality images showing different angles: front view, back view, side view, and close-ups of important details. Add lifestyle photos showing the product in use if relevant. More images generally lead to better sales, but make sure each image adds value.
Do I need different image sizes for mobile and desktop users?
Yes, mobile users need smaller, faster-loading images while desktop users can handle larger, more detailed versions. Use responsive images that automatically serve the right size based on the device. This improves loading speed on mobile while maintaining quality on desktop.
How do image sitemaps help with SEO?
Image sitemaps tell search engines about all the images on your website, helping them get indexed faster. Include information like image location, caption, title, and description. This is especially important if your images load through JavaScript or if you want them to appear in Google Images search results.
What common mistakes should I avoid when optimizing product images?
Don’t upload huge files without compressing them first. Avoid using generic file names like “image1.jpg” or leaving alt text empty. Don’t use the same image for multiple products, and never stretch or distort images to fit different sizes. Also, make sure your images actually show the product clearly – blurry or dark photos hurt sales.
