Compress PNG Images
PNG files too large? Compress them while keeping transparency and sharp edges intact. Our browser-based compressor reduces PNG file sizes through smart re-encoding — no uploads, no quality compromise.
Compression Type
Re-encoding — optimizes PNG compression without quality loss
Typical Savings
20-50% file size reduction depending on image content
Best For
Screenshots, graphics, logos, icons, images with transparency
How to Compress PNG Images
Select PNG Files
Click the upload area or drag and drop your PNG images. Select as many files as you need.
Set Quality Level
Use the quality slider to control compression. Lower quality means smaller files. Preview before downloading.
Download Compressed
Download each file individually or grab all compressed images as a single ZIP archive.
PNG Compression Tips
Best for Graphics
PNG compression works best on graphics, screenshots, and images with flat colors or text. Photos in PNG format may get better savings by converting to WebP or JPEG instead.
Keep Transparency
Our PNG compressor preserves alpha transparency. Your icons, logos, and overlays will maintain their transparent backgrounds after compression.
Consider Format Switching
If your PNG files are photographs, you can often achieve much better compression by converting to WebP (lossless) or JPEG (lossy). Use our converter for those cases.
100% Private Compression
Unlike online compressors that upload your images to their servers, PhotoFormatLab processes everything locally in your browser. Your files are never transmitted anywhere — they stay on your device.
Safe for personal photos, business documents, and confidential images.
Frequently Asked Questions
PNG compression optimizes how data is stored without discarding any visual information. The output looks identical to the original — it is true lossless compression.
No. PNG compression preserves all transparency information. Your images will maintain their transparent backgrounds after compression.
PNG uses lossless compression, which preserves every pixel exactly. This results in larger files than lossy formats like JPEG. Compression can optimize the encoding to reduce size without any quality loss.
Yes. Drag and drop multiple PNG files and compress them all at once. Download individually or as a ZIP.
Completely free with no limits. Processing happens in your browser — no server uploads, no registration, no watermarks.