Compress JPEG to 100 KB
For blog featured images, product thumbnails, and Core Web Vitals.
100 kilobytes is a practical sweet spot for web images — small enough to load quickly, large enough to look crisp. Useful for blog hero images, product thumbnails, and article graphics.
When You Need to Compress JPEG to 100 KB
The 100 KB preset is the right choice for these common scenarios:
- WordPress blog featured images
- Product thumbnails for Shopify and WooCommerce
- Hero images on landing pages
- Article inline graphics
- Email newsletter headers
- Listing photos on classifieds and marketplaces
How to Compress JPEG to 100 KB in 4 Steps
- Visit the TheCompressJPEG homepage
- Select the 100 KB preset
- Upload your JPG, JPEG, or PNG file
- Download the optimized version and use it on your site
Pro Tips
For maximum SEO benefit, combine 100KB compression with proper image dimensions (width matching your container size) and lazy loading via the loading="lazy" attribute. Together these can improve Largest Contentful Paint by 40% or more.
Frequently Asked Questions
Why does Google care about image size?
Core Web Vitals — specifically Largest Contentful Paint (LCP) — heavily depends on how fast your hero image loads. Smaller images mean faster LCP, which means better rankings.
Is 100KB small enough for mobile users on 4G?
Yes. 100KB downloads in roughly 0.3 seconds on a typical 4G connection, making it ideal for mobile-first websites.
Can I batch compress multiple blog images?
Currently we compress one image at a time, but it takes less than a second per image so batching dozens manually is still fast.
Will compression hurt visual quality on retina displays?
No. Our algorithm preserves enough quality that 100KB images still look crisp on Retina, OLED, and 4K displays.
Try Other Sizes
Need a different target? Try one of our other dedicated tools: