How to compress PNG images
imglogotool.com PNG Compressor is a free browser-based tool that reduces PNG file size by 50–80% using smart lossy color quantization — the same technique used by TinyPNG. All compression runs locally in your browser. No files are uploaded to any server, no daily limits, no API key required.
To compress a PNG file, drop it into the compressor above. Compression starts instantly using smart color quantization that reduces the palette to 256, 128, 64, 32, or 16 colors. At 256 colors, most images show zero visible quality difference while file size drops 50-70%. Click Save to download your compressed PNG.
Drop your PNG files into the compressor above, click browse, or paste from clipboard. Batch supported — add as many as you need.
Choose color depth. 256 colors gives excellent quality with 50-70% file size reduction. 128 colors achieves 60-75% reduction. Lower values (64, 32) produce even smaller files for simple graphics.
Compression starts instantly. Each image is quantized in your browser — smart color reduction removes invisible data. Click Save to download your compressed file.
How PNG compression works
Lossy quantization (like TinyPNG) works by analyzing the colors in your image and reducing the palette to fewer colors. For most images — icons, logos, UI screenshots, web graphics — the difference is invisible while file size drops 50-80%.
This is different from lossless compression (OptiPNG, pngcrush) which only optimizes the deflate stream. Quantization achieves much better results because removing redundant color data is the biggest win for PNG files.
Color depth comparison
| Colors | Quality | Size reduction | Best for |
|---|---|---|---|
| 256 | Excellent | 50–70% | Most images, logos, screenshots |
| 128 | Very good | 60–75% | Icons, simple graphics |
| 64 | Good | 70–80% | Flat color designs |
| 32 | Acceptable | 75–85% | Simple icons, favicons |
| 16 | Visible loss | 80–90% | Thumbnails, tiny assets |
Tip: Start with 256 colors. If the file is still too large, try 128. Most users never need to go lower than 128 for web graphics.
imglogotool.com PNG Compressor vs TinyPNG
imglogotool.com PNG Compressor and TinyPNG use the same core technique — lossy color quantization that reduces the PNG palette to fewer colors. The key difference: imglogotool.com runs 100% in your browser. Your images are never uploaded to any server. No file size limits, no daily quotas, no API key needed. TinyPNG processes images on their servers and limits free users to 500 compressions per month.
Related tools
Need to convert formats? Try the Image Format Converter — batch convert PNG, JPG, WebP, AVIF, and JPEG XL.
Working with SVG? Use the SVG to PNG Converter to export vectors at any resolution.
Need a favicon from your compressed PNG? The Favicon Generator creates multi-size .ico files.
Publishing to Google Play? The Feature Graphic Generator creates 1024×500 banners.
Frequently asked questions
Is imglogotool.com PNG Compressor really free?
Yes, imglogotool.com PNG Compressor is 100% free. No signup, no watermark, no file size limit, no daily quota. Everything runs in your browser.
Are my files uploaded to a server?
No. Your PNG files never leave your device. All compression happens locally in your browser using JavaScript.
How is imglogotool.com different from TinyPNG?
Same technique (lossy color quantization), but imglogotool.com PNG Compressor runs entirely in your browser. No upload, no server processing, no file limits. TinyPNG sends your images to their servers and limits free users to 500 compressions per month.
Does compression reduce image quality?
At 256 colors, most images show no visible difference. The algorithm is smart about choosing which colors to keep. Transparency is fully preserved.
Does it work with transparent PNGs?
Yes. Alpha channel transparency is fully preserved during compression.
Can I compress multiple files at once?
Yes. Drop multiple PNG files at once. Each file compresses automatically as soon as it loads.
What browsers are supported?
Any modern browser: Chrome, Firefox, Safari, Edge, and their mobile versions.