PNG images are not bad in every context. But on a business website, they are a problem. They are too large, they load too slowly, and there is a better option that most business sites still have not switched to. That option is WebP, and the difference in file size is not minor.
A WebP image can be 12 to 14 times smaller than a comparable PNG at the same visual quality. If your site has 10 images and each one is a PNG, you could be loading ten times more data than necessary on every page visit. That extra data costs you load speed, and load speed costs you rankings and conversions.
What Is the Actual Difference Between PNG and WebP?
PNG is a lossless image format, which means it preserves every pixel exactly as-is. That is useful for specific things: logos with transparent backgrounds, screenshots, graphics with sharp edges and text. But lossless means large. A PNG does not throw away any information, so the file size reflects that.
WebP is a modern format developed by Google that uses more efficient compression. It can do both lossless and lossy compression, and even in lossless mode it produces smaller files than PNG. In lossy mode, it can compress a photo-quality image down to a fraction of the PNG equivalent while keeping it visually identical to the human eye at normal viewing distances.
JPEG is the traditional comparison point for photos. WebP beats JPEG too, usually by 25 to 35 percent at the same visual quality. So whether you are currently using PNGs or JPEGs, switching to WebP produces smaller files.
Why Does File Size Matter for a Local Business Website?
Most local business websites are not high-traffic platforms where infrastructure costs are the concern. The issue is load time, and load time affects two critical things: search rankings and conversion rates.
Google uses page speed as a ranking signal. Slow sites rank lower. This is documented, it is not speculation, and it applies in local search results just as much as anywhere else. A plumber in Phoenix whose website loads in 1.2 seconds will outrank a plumber whose site loads in 4.8 seconds, all else being equal. The site with optimized images has a structural ranking advantage before any other SEO work is done.
The conversion side is just as real. A visitor who clicks your listing from Google has already expressed intent. They want a plumber. If your site takes five seconds to load, a meaningful percentage of those visitors will hit the back button and click the next result. You paid for that traffic with your SEO work or your ad spend, and you lost it because the images were too heavy. That is a direct revenue leak.
Most Local Business Sites Are Still Using Old Formats
If your site was built more than two or three years ago, it almost certainly has PNGs and JPEGs that were never converted. The developer who built it used whatever the client provided or whatever came out of a stock photo site, and nobody went back to optimize them afterward.
This is one of the most common performance issues I see when auditing local business sites. The design might be fine. The copy might be reasonable. But the images are dragging the page weight up by hundreds of kilobytes or even megabytes, and the site loads slowly because of it.
You can check your own site's image situation using the free scanner at focusai.us/scanner/scan. It will show you what is slowing your site down and give you a starting point for what needs fixing.
How Do You Convert Images to WebP?
The conversion process is not complicated. There are free tools that handle it in bulk. Squoosh, Convertio, and various command-line tools like cwebp can convert images in batch. Most modern content management systems including WordPress have plugins that automatically convert uploaded images to WebP.
If you are on a managed website platform, ask your developer or provider whether images are being served as WebP. If they are not, ask why. There is no good reason in 2026 for a new or recently updated business site to be serving PNG or JPEG when WebP is universally supported by modern browsers.
What About Browser Support?
WebP is supported by every major browser. Chrome, Firefox, Safari, Edge, and mobile browsers all support it. The compatibility concern that existed a few years ago is gone. There is no reason to serve PNG when WebP is available and universally supported.
Image optimization is not a big project. It is a one-time fix that permanently improves your load speed and keeps improving as long as you maintain the practice of using WebP going forward. A slow website is one of the most common reasons local business sites fail to generate leads, and image format is one of the easiest problems to fix.
Check your site. Convert your images. Stop paying the performance penalty for a format that stopped being the best option years ago.