Compress JPEGs with quality + scale sliders and live size preview. Part of the DevTools Surf developer suite. Browse more tools in the Images collection.
Use Cases
Web developers optimizing images for faster page load times
Bloggers compressing photos before uploading to CMS platforms
Email marketers reducing image file sizes to avoid spam filters
Designers preparing web-optimized assets without Photoshop
Tips
Adjust the quality slider to find the optimal size-to-quality tradeoff
Use the scale slider to reduce dimensions and file size simultaneously
Preview the output size before downloading — the slider updates live
Fun Facts
JPEG compression was standardized in 1992 by the Joint Photographic Experts Group — at quality 75%, a typical photo is reduced to 10% of its original uncompressed size.
JPEG uses Discrete Cosine Transform (DCT) to convert pixel blocks into frequency components — human eyes are less sensitive to high-frequency details, so those are compressed most aggressively.
Google's PageSpeed Insights penalizes uncompressed images — a 2018 HTTP Archive study found that images account for 50% of total page weight on the median website.
FAQ
JPEG only or other formats?
JPEG is the main target — it has the most quality/size tradeoff levers. WebP and AVIF also compress; PNG can only be optimized (lossless).
What quality should I use?
85 is the web sweet spot — imperceptible loss, significant size reduction. 60-75 for thumbnails, 90+ for photography portfolios.
Can I scale down at the same time?
Yes — quality slider + dimension slider. Combining both often gives huge size savings with minimal visual impact.
