PNG Compression
- 90-100Detailed photos and smooth gradients20-60% less
- 75-89Screenshots, logos, and web graphics60-80% less
- 40-74Simple illustrations and icons75-90% less
- Below 40Favicons and basic artwork85%+ less
20M+ Images Compressed Without Losing Quality
Free Online PNG Compressor
Compress PNG images online in seconds with Noamax free PNG compressor. Reduce PNG file size without losing quality and download instantly.
Free, Unlimited, No Quality Loss
Up to 5 Images at Once
Runs in Your Browser
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How to Compress PNG Images Online for Free
Your PNG files stay on your device. The browser validates each image and loads the PNG encoder only when compression is requested.
Use our free PNG compressor for up to five static images. Choose 100% to keep full color detail or a lower setting to reduce the palette and often create a smaller file.
- Choose or drag in up to five static PNG images.
- Select a quality setting and compress each PNG in a controlled sequence.
- Compare the original with the result, then download one image or all results.
Choosing the Right Quality Level
Higher percentages retain more colors and smoother gradients. Lower percentages reduce the palette for smaller files, which works best for simple graphics and icons.
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Frequently Asked Questions
Is the Noamax PNG Compressor Free?
Yes. You can compress and download PNG files without an account, credit card, daily allowance, or Noamax credit.
Are My PNG Files Uploaded?
No. PNG validation, decoding, compression, comparison, and download preparation happen locally in your browser.
Does PNG Compression Preserve Transparency?
Yes. PNG files remain PNG after compression, and the output preserves alpha transparency.
What Does 100% PNG Quality Mean?
At 100%, the PNG encoder keeps full color detail while recompressing the pixels losslessly. Settings below 100% reduce the color palette, which can create a smaller file with visible changes in gradients or detailed imagery.
Will the Default 80% PNG Quality Cause Visible Quality Loss?
Every PNG starts at 80% quality by default. This setting is designed to reduce file size without noticeable quality loss during typical viewing. Lower values reduce the color palette further and can make banding, color changes, or detail loss more visible in gradients and detailed images, so use the Before and After comparison when choosing a lower setting.
Are Animated PNG Files Supported?
No. This compressor accepts static PNG files only and rejects animated PNG files before compression.
Can I Compress Several PNG Files at Once?
Yes. Add up to five PNG images and select Compress All. They are decoded and compressed one at a time to keep browser memory use controlled.
Why Can a Compressed PNG Be Larger?
Some PNG files are already strongly optimized. Image content and the selected quality also affect the result, so the tool reports the actual file size instead of promising a reduction.