Anything over 3 seconds and half of your customers will close the tab and shop elsewhere.

Despite thousands of dollars invested in hosting and themes, many online store owners are completely unaware of the crucial optimization step. Large product images, poorly compressed banners, and supplier graphics slow down your website like anchors and significantly damage sales figures.

If you want to achieve true success as a profitable online retailer and brand, you need to learn how to get your web assets right. The following guide will walk through the technical details of optimizing images for the web, examine the direct relationship between weight and revenue, and give actionable steps needed to get your site up and running at blinding speeds.

1. Understanding the Relationship Between Load Time and Revenue

Before looking at the particular technical optimizations that can be made to web assets, it is important to understand why this process is so vital to the long-term success of your online boutique or store.

Avoiding Visitor Impatience

Every single picture, animation, and icon on your web page must be loaded by transferring data from your web host to the consumer device. With large file sizes, this can take upwards of 5 seconds to begin rendering on a smartphone 4G connection. Across different industries, studies have shown that every single second of load time cuts customer satisfaction by approximately 16% and reduces overall conversions by 7%. Simply put, slow websites = lost sales.

Search Engine Optimization

Website performance is a core ranking factor for major search engines like Google.

If the majority of your traffic is coming from organic search results, you need to ensure that your online store is optimized for speed. Heavy graphics will raise red flags with search engine crawlers and ultimately hurt your SEO, making it harder for new customers to find you.

2. How to Effectively Compress Your Web Assets

There are two particular types of compression that can be applied to your digital assets in order to reduce their file size: lossy and lossless.

Lossless Compression

Lossless compression removes extra coding and technical information from a file without damaging the visual integrity of the asset. When compared to the original image, lossless compression typically only reduces the file size by 10-25%. When compared to lossy compression, lossless compression provides significantly smaller reduction in file size. Lossless compression is best used on vector-based graphics, logotypes that use textual elements, and high-resolution imagery such as photography.

Lossy Compression

Lossy compression is the preferred type of compression for all e-commerce product imagery. Lossy compression essentially removes unique pixels that are not necessary for the human eye to notice, such as groups of similar colors or patterns. File sizes can be reduced by up to 75-89%, with almost no visible difference to the consumer. Lossy compression is best used on all storefront product photos that will appear on category pages, blog posts, and social media platforms.

3. Resizing Your Web Assets to the Proper Display Medium

The most common mistake made by amateurish online store owners is uploading full resolution images to web listings. When taking a photo with a high-end digital camera or smartphone, the resolution may be as high as 4000 x 3000 pixels.

However, when displayed on a computer monitor or smartphone display, the majority of pixels will be cut off due to the much smaller viewable size - usually no more than 800 x 1200 pixels.

By uploading unnecessarily large photographs, you are artificially inflating the file size of your web assets and slowing down your online store. On a smartphone, you would have to scroll right/left to see all of the pixels in a 4000-pixel image when most screens are only 1200 pixels wide. This ultimately leads to a poor user experience.

Here are the recommended display sizes depending on the particular visual medium:

Square Product Tile – 1000 x 1000 or 1200 x 1200 pixels

Blog Feature – 1200 x 630 pixels

Hero Banner – 1920 x 1080 pixels

Make sure that all product listing images are under 150 Kilobytes (KB) and hero banners are under 400 Kilobytes (KB)

4. Creating Clean Canvas Backgrounds

It is not enough to simply resize and compress your web graphics. You must also consider how much visual data is embedded into the image itself. Photos with busy, cluttered backgrounds and complicated compositions will have a much larger file size than a simple product shot on a white background.

This happens because the pixels in complicated images contain significantly more color variation and visual information than in simple shots. Compression software cannot effectively remove unique pixels, so the file size of such images will remain artificially inflated. In contrast, pixels in a solid color background can be compressed by up to 60-80%, ultimately reducing the overall file size. Clean, simple backgrounds allow you to create high-quality product images that load blazing fast on your website without sacrificing visual appeal.

Additionally, a clean background instantly elevates your store’s perceived professionalism and helps it stand out from budget competitors. It removes distracting shadows, minimizes harsh studio lighting, and isolates your product for better visual appeal. Ultimately, you want your customers to focus on the product itself and its intricate craftsmanship. A busy, white background will prevent your customers from focusing on the actual product details.

5. The Ultimate Step-by-Step Guide to Optimizing Your Store Assets

To help you get started, use the following tools from AriaToolz to create an effective graphic preparation pipeline. Even if you are unfamiliar with photo editing software or want to save time on graphic editing, you can use the simple 4-step guide below to prepare your product images for your Shopify theme or custom e-commerce solution:

Step 1: Background Removal

Begin your graphic preparation pipeline by eliminating busy, incomprehensible backgrounds. Using the AriaToolz Remove Background tool, upload your image and wait for the background to be automatically detected. Once removed, you should have a clean product shot with no unneeded visual information that would unnecessarily bloat the file size.

Step 2: Cropping Your Image

Next, use the AriaToolz Crop Image tool to eliminate extra visual space around your product. Simply upload your graphic and use the tools to get rid of extra, unnecessary area around the product. Make sure your composition is centered, and the bounding box follows a standard aspect ratio.

Step 3: Image Compression

Now, use the AriaToolz Image Compressor to reduce the file size of your web asset. This powerful tool uses lossy compression to extract any unneeded pixels, substantially reducing the file size while maintaining excellent image quality. Your image should now be compressed to a very small file size in the double-digit KB range.

Step 4: Final File Size Check

Finally, make sure that your file size falls under 150 KB for product images and 400 KB for hero banners. If everything looks good, upload the image to your online store. By spending an extra minute optimizing your store graphics, you will substantially improve your website performance, dominate the search engine results page, and ultimately boost your sales figures.