Image Optimization Blog & Guides
Guides on image compression, format selection, e-commerce optimization, and privacy-first technology — written by Sanjay Sahani, the solution architect who built InstaShrink.
How Image Compression Actually Works
The full story of what happens between dropping a photo on a compressor and getting a file a tenth the size back — DCT, quantization, and why quality 80 isn't 80% quality.
Read ArticleWebP vs JPEG vs PNG: How I Actually Choose
The decision rules I use after twenty years of shipping websites — when each format wins, when compatibility beats file size, and where AVIF fits.
The E-Commerce Image Checklist I Wish Every Store Followed
Eight small image mistakes stack up into a slow store. The checklist version of the fixes, for Shopify, Amazon, Etsy, and WooCommerce sellers.
How to Reduce JPEG Size Without Losing Quality
A JPEG's size comes from four levers — pixels, quality, encoding, metadata. Pull them in the right order and 5MB becomes 400KB with no visible change.
Speeding Up a Shopify Store: Start with the Images
What Shopify's CDN fixes for you, what it can't, and the five-step workflow that cuts most stores' page weight by more than half.
Amazon Listing Photos: The Rules That Actually Get Enforced
Which image requirements Amazon's systems police automatically, which quietly cost you conversions, and how to prepare files that upload cleanly.
Instagram Image Sizes: What Actually Survives the Upload
Instagram re-processes everything you post. These are the exact dimensions and export settings that come through intact — from testing, not folklore.
The Hidden Risks of Online Image Compressors
Where your files actually go when you upload them to a "free" compressor, which images it genuinely matters for, and the architecture that removes the risk.
How InstaShrink Works: Browser-Based Compression Explained
A step-by-step look at how InstaShrink uses WebAssembly to compress images entirely in your browser—no server uploads, no privacy trade-offs.
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