Product Image Sizes for Marketplaces
Pixel dimensions, file size caps, background rules and accepted formats for the major marketplaces, in one table.
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Guides and notes on image formats, compression, and web performance.
Shopify Image Sizes: Why Under 500 KB Matters
Shopify allows 20 MB per image. That is the limit, not the target. Here is the size your storefront actually wants.
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WordPress Image Upload Limits Guide
Most advice tells you to edit php.ini. On shared hosting you often cannot. Compressing the image first works everywhere.
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Current Social Media Image Sizes
Post, story, cover and profile dimensions for each network, checked rather than copied from a four-year-old listicle.
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Email Newsletter Image Sizes & Limits
Gmail clips messages over 102 KB, and images are usually why. What each client tolerates and how to stay inside it.
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Which Image Formats Each Platform Accepts
Does Shopify support WebP? Does Etsy accept AVIF? A reference for what each platform takes and what it quietly re-encodes.
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PNG vs JPG: Which Should You Use?
Four questions that settle it every time, with no need to understand compression theory or read another explainer about DCT coefficients.
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Is WebP Still Worth It in 2026?
Support is universal now, so the question has moved from whether you can use WebP to whether AVIF has made it redundant.
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AVIF vs JPEG XL: The Format War
JPEG XL is arguably the better format. AVIF is the one you can ship. A short history of how that happened.
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Why Is My PNG So Large? 3 Easy Fixes
PNG is lossless, which is exactly why the files are enormous. Three fixes, and what each one costs you.
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Lossy vs Lossless Compression Explained
What compression actually throws away, why you usually cannot see it, and the point at which you can.
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Serve Images in Next-Gen Formats
The audit means WebP or AVIF. Here is the markup that satisfies it and keeps older browsers working.
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