Image Compression Guide

Learn how to compress images effectively without losing quality. Discover the best image formats, tools, and optimization strategies for web, mobile, and SEO. Reduce image sizes for faster load times, better UX, and improved performance.

Lossless CompressionWeb PerformanceResponsive ImagesSEO Optimization

What is Image Compression?

Image compression is the process of reducing an image’s file size without drastically affecting visual quality. It helps improve page load times, saves storage, and enhances user experience — especially on mobile and low-bandwidth connections.

There are two types of image compression: Lossy (removes some data for higher compression) and Lossless (preserves all original data). Choosing the right method depends on your use case.

Best Image Formats for Compression

JPEG / JPG

High lossy compression

Best for photographs

PNG

Lossless, supports transparency

Great for logos & UI

WebP

Modern, lossy/lossless

Smaller + better quality

AVIF

Next-gen format

Highest compression

Expected Compression Ratios

By Format

JPEG50–90%

PNG10–50%

WebP25–80%

AVIF50–90%

By Quality Level

High Quality (85-100%)

Small reduction, better visuals

Medium Quality (65-85%)

Balanced compression

Low Quality (40-65%)

Smaller files, visible quality loss

Image Compression by Use Case

Web

Use WebP/JPEG

Keep images under 500 KB

Use responsive formats

Mobile

Compress aggressively

Target 50–200 KB

Use lazy loading

Email & Chat

Use JPEG/PNG

Keep total size under 1 MB