Image Optimization Guides for
Sellers, Creators & Developers
Everything you need to resize, compress, and format product photos — for Amazon, Shopify, Walmart, US passports, visas, and web performance. No jargon, just actionable specs.
E-Commerce Guides
Amazon Image Requirements 2026: The Complete Seller's Guide
Is your listing suppressed? The 2000×2000px spec, white background rules (RGB 255), A+ Content dimensions, and category-by-category exception table.
How to Compress Amazon Product Images Without Losing Quality
JPEG quality 85-90% sweet spot, the 2000px zoom rule, JPEG vs PNG vs TIFF, sRGB colour profiles, and a free browser-based compressor.
Walmart Marketplace Image Requirements 2026
Don't let your listing get rejected. A full guide to zoom capabilities, excessive white space rules, and Walmart's specific dimension specs.
Shopify Image Sizes 2026: The Uniform Store Grid Guide
Stop jagged product grids. Why the 2048px square ratio is crucial for the Dawn theme, conversion rates, and mobile display.
Free Shopify Image Resizer — No App Needed
Resize your entire Shopify catalog to 2048×2048px in minutes — no monthly fee, no app install, no uploads. Free vs paid app comparison.
Etsy Image Size Guide 2026: Listings, Thumbnails & Banners
Listing photos, banner sizes, thumbnail ratios, and exactly why your Etsy photos look blurry after uploading. Plus the 2000px zoom rule.
Visa & Document Photo Guides
Web Performance & Developer Guides
How to Fix "Serve Images in Next-Gen Formats" (Lighthouse)
Improve your Google PageSpeed score instantly. Why JPG is holding your site back and how to switch to WebP without breaking older browsers.
Reduce HTTP Requests with Base64 Image Encoding
Speed up your website by converting small icons into inline CSS strings. When to use Base64 — and when it will hurt your PageSpeed instead of helping.
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Social Media & Creator Guides
Instagram Size Guide 2026: Stop Blurry Photos
The complete cheat sheet for Posts, Stories, and Reels dimensions. How to stop Instagram's compression algorithm from ruining your shots.
YouTube Thumbnail Size 2026: The CTR Optimization Guide
Stop text from being covered by the timestamp. Safe zones, the 2MB limit workaround, and the exact pixel dimensions that maximize click-through rate.