Image Optimization Checklist: 10 Steps for Web
A 10-point checklist to optimize every image before shipping: format, compression, dimensions, alt text, lazy load, and more.
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Tags: image, optimization, checklist
Image Optimization Checklist: 10-Step Guide for Developers Images are consistently the largest contributor to page weight on the web. According to HTTP Archive data, images account for approximately 45–60% of the total byte weight of the average web page. Yet most pages are still shipping images that are significantly larger than they need to be — wrong format, wrong dimensions, insufficient compression, missing lazy loading. Fixing image optimization is high-leverage work: a well-optimized page can be 2–5x lighter, load measurably faster, score better on Core Web Vitals, and convert more visitors — all without changing a single line of product code. This checklist walks through every layer of image optimization, in the order you should apply them. --- Step 1: Choose the Right Format The…
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