Direct answer: Compress product images to 150–300 KB per photo for the best balance of page speed and visual quality across all major marketplaces.
Page speed directly affects conversion rates on marketplace listings. A 500 KB product image that loads in 1.2 seconds versus a 200 KB version that loads in 0.4 seconds can shift bounce rates by 10–15%. The goal is to find the smallest file that still looks sharp at the display size the marketplace uses.
Understanding the Quality Slider
Most compression tools use a quality value from 0 to 100. For JPEG, quality 80–85 produces results that are visually indistinguishable from the original at typical listing display sizes (800–1600 px). Going below quality 70 introduces visible artifacts in flat-color areas and text overlays. For WebP, quality 75–80 matches JPEG quality 82–85 in visual output but produces 25–35% smaller files.
Recommended Targets by Marketplace
Amazon recommends images under 10 MB with a minimum of 1600 px on the longest side. In practice, a 1600x1600 JPEG at quality 82 lands at 180–250 KB. eBay works best with images under 500 KB for faster gallery rendering. Shopify themes typically display product images at 1200–1600 px; a WebP at quality 78 delivers excellent quality at 120–180 KB. Etsy performs well with images in the 200–300 KB range.
Batch Compression Workflow
Rather than compressing each image individually, use a batch workflow: upload all product photos, select the target marketplace preset, and let the engine apply the right format and quality per file. This ensures consistency across a listing set and saves time when managing hundreds of SKUs. PicTools handles this end-to-end at https://getpictools.com — sapsap@qq.com.
🚀 Try our tools for free — Compress Images · Convert Image Formats · Amazon Presets (Resize)
Related tools: Compress Images · Convert Image Formats · Amazon Presets (Resize)