Image Optimizer

Resize and compress images with high-quality Lanczos resampling

Also try: PNG ↔ JPG | Metadata Stripper

Drag & drop your image here

or click to browse (PNG, JPG, WebP, GIF)

Your file never leaves this device

Dimensions

Presets

Social Media

Web

File Size

Quality: 85%

85% recommended. Smaller file, no visible quality loss.

Target file size: KB

Quality adjusts automatically to meet your target.

How do I reduce image file size without losing quality?

Image compression removes redundant data while preserving visual quality. The key is finding the right balance between file size and appearance.

Compression strategies

Target file size: Set your limit and let the optimizer find the right quality
Quality slider: 85% removes 60-80% of size with no visible difference
Resize first: Smaller dimensions mean smaller files before compression
Choose the right format: JPG for photos, PNG for graphics with text

Lanczos resampling

When resizing, this tool uses Lanczos resampling for superior edge sharpness compared to standard browser resizing. The result is cleaner text and crisper details at any scale.

Why image size affects page speed

Images account for roughly 40% of total page weight on the average website, according to HTTP Archive data. A single uncompressed hero image can add seconds to your load time.

Speed matters more than most people realize. A Google and Deloitte study across 37 brands found that a 0.1-second improvement in load time correlated with 8.4% more conversions in retail. Google research also shows that 53% of mobile visitors leave if a page takes longer than 3 seconds. Compressing and resizing images before publishing is the most direct way to hit that threshold.

Related guides

All processing happens in your browser. Your images never leave your device, and there's no upload wait time.