Once an image leaves your server, you lose control over how it's rendered. A common pitfall is serving a high-efficiency WebP while treating the JPEG fallback as an afterthought. If the fallback is set to a low quality,…
Hitting an exact file size - a passport photo under 200KB, a hero image under a strict CMS limit - is one of those tasks that sounds trivial but rarely is. You compress, overshoot by a few kilobytes, lower the quality,…
Compression artifacts are the visible byproducts of a lossy encoder trying to squeeze an image into a smaller file. They show up most often when an image is exported at mid-range quality (say, 60) and then recompressed…
Most image optimisation advice treats delivery as a download problem: smaller file, faster page. Performance audits reinforce this because they measure bytes on the wire. But once the bytes arrive, the browser still has…
Most email providers cap attachments at 20-25 MB (Gmail and Yahoo at 25 MB, Outlook at 20 MB). Modern iPhone photos typically range from 3 MB to 12 MB depending on mode, so a handful of attachments will hit the limit.…
Exporting is often treated as a technicality at the end of the process, but it's the step that decides whether your colour work and fine detail actually survive the trip to the viewer's screen. Careless export settings…
A typical mid-size store on WooCommerce might have fifty product pages, each with six to eight images uploaded as full-resolution PNGs straight from Photoshop. The main product grid can easily end up over 30 MB, taking…
Most users treat the JPEG quality slider as a simple fidelity percentage where 100 represents a perfect copy and 50 represents half the original detail. While this idea is common, it is simply not how the compression…
Adding loading="lazy" to every image on a page looks like an easy performance win. In practice, applying it uniformly - including to hero banners and other above-the-fold visuals - usually makes the page feel slower.
Lossy and lossless compression solve different problems. Lossy trades a small amount of visual information for a large reduction in file size; lossless keeps every bit of data but saves much less space. Picking the…
Free online image compressors are used heavily because they're quick and require no install. The files being uploaded often contain GPS coordinates, timestamps, device information, and identifiable faces - all of which…
Even with compression, dimensions, and a CDN all in order, a hero image can still feel sluggish on first paint. One of the cheapest fixes for this is also one of the oldest: encoding the JPEG in progressive mode.…
A photography portfolio can look great on a desktop, where the connection is fast and the screen is wide, and still take over ten seconds to load on a phone. The usual cause is a plain <img> tag serving one…
Shopify stores are often blamed on a "heavy theme" when the real cause is a single collection banner uploaded at 8000x5000 pixels and 14MB. Shopify will happily serve that file to every visitor's phone.
Developers usually look at code first when a page feels slow, but the bottleneck is more often in the media library. A homepage that takes over four seconds to load frequently has perfectly fine HTML, CSS, and…