Best Image Compression Techniques in 2025

The State of Image Compression in 2025

Image compression has evolved dramatically. In 2025, the balance between file size and visual fidelity has never been better thanks to advances in both lossy and lossless algorithms.

Lossy Compression for Web Images

Lossy compression remains the go-to for web images. Modern JPEG encoders like MozJPEG can achieve 60-70% size reduction with virtually imperceptible quality loss. The key is finding the right quality threshold — typically between 75-85% for most web use cases.

Lossless Compression When Every Pixel Matters

Lossless compression shines when every pixel matters. PNG optimization tools strip unnecessary metadata and apply advanced DEFLATE algorithms, often shaving 20-40% off file sizes without touching a single pixel.

WebP: The De Facto Web Standard

WebP has become the de facto standard for web images, offering both lossy and lossless modes with superior compression ratios compared to JPEG and PNG. Browser support is now universal, making it a safe choice for any project. Learn more about format tradeoffs in our JPG vs PNG vs WebP guide.

Read: JPG vs PNG vs WebP — The Ultimate Format Guide →

AVIF: The New Frontier

AVIF is the new frontier. Based on the AV1 video codec, AVIF delivers stunning compression ratios — often 50% smaller than JPEG at equivalent quality. Support is growing rapidly across browsers and tools.

The best strategy? Use multiple formats with the HTML picture element. Serve AVIF to browsers that support it, fall back to WebP, and use JPEG as the final fallback. This approach ensures every visitor gets the smallest possible file.

Image Compression for App Developers

If you're building mobile apps, optimized images are critical for app size and performance. Compress your App Store screenshots, feature graphics, and marketing assets before uploading:

Create device mockups for app marketing →

Generate Play Store feature graphics →

Create optimized GIFs from images →

Best GIF size & dimensions for every platform →