PNG Compressor
Compress PNG images online to reduce PNG file size while preserving transparency and image quality. Batch PNG compression with private in-browser processing.
Compress PNG images
Upload or drag & drop PNG images while preserving transparency
PNG · Up to 50 MB each
This free PNG Compressor helps you compress PNG images online and reduce PNG file size while preserving transparency and visual quality. Upload PNG images, adjust compression settings and download optimized PNG files instantly. You can compress multiple PNG images at once and optionally resize large PNG files during compression. All PNG compression runs locally in your browser so your images remain private and are never uploaded to a server.
How to compress PNG images
- Upload PNG images by dragging them into the PNG compressor or clicking the "Upload PNG Images" button.
- Adjust the compression level using the quality slider to control PNG file size reduction.
- Optionally choose a maximum dimension (4K, FHD, HD or custom size) to resize large PNG images while compressing them.
- Click "Compress" to compress PNG images and download the optimized PNG files instantly.
Why use this PNG Compressor
Compress PNG images to significantly reduce PNG file size while maintaining strong visual quality for websites, apps and image storage.
This PNG compressor works entirely inside your browser. Your PNG images are processed locally and never uploaded to any server.
The PNG alpha channel and transparent backgrounds remain intact after compression.
Control PNG compression using the quality slider to balance image quality and PNG file size.
Supported formats
PNG images
PNG alpha channel preserved
Compress multiple PNG images at once
PNG compression runs locally in your browser
Frequently asked questions
No. PNG compression keeps the alpha channel intact, so transparent backgrounds remain fully preserved.
No. This PNG compressor processes images directly in your browser. Your PNG files stay on your device and are never uploaded anywhere.
Most modern browsers can handle PNG images up to around 50 MB each depending on your device memory and browser performance.
Yes. Upload several PNG images and compress them together using batch PNG compression. Each optimized PNG file can then be downloaded individually.
PNG is best when you need transparency or lossless image quality. For smaller web images, formats like WebP can sometimes produce smaller file sizes.