Question 1

Can I compress a PNG without losing transparency?

Accepted Answer

Yes. PNG supports transparency (alpha channel), and our compressor preserves it. When you output as PNG, transparent areas remain fully transparent in the compressed file. If you convert to JPEG, transparency is replaced with a white background.

Question 2

Why is my PNG file so large?

Accepted Answer

PNG is a lossless format, which means it stores every pixel without quality loss. This makes PNG files significantly larger than JPEG for photographs. PNG is best for graphics, logos, and screenshots. For photos, JPEG or WebP will be much smaller at similar quality.

Question 3

What is the best way to reduce PNG file size?

Accepted Answer

For PNGs with transparency, use our PNG compressor at 85% quality — it applies lossy compression while keeping the alpha channel. For photos saved as PNG, converting to WebP or JPEG will typically yield 60–80% smaller files.

Question 4

Does compressing PNG reduce image quality visibly?

Accepted Answer

At quality settings above 80%, the difference is barely perceptible. For logos and icons, use 90%+ to preserve sharp edges. Use our before/after preview to judge quality before downloading.

Question 5

What is the difference between PNG-8 and PNG-24?

Accepted Answer

PNG-8 supports up to 256 colors and produces smaller files — ideal for simple graphics. PNG-24 supports millions of colors and transparency — ideal for detailed graphics and photos. Our tool handles both variants automatically.

Format	Best For	Transparency	File Size
PNG	Logos, icons, screenshots, graphics with text	✓ Yes	Large
JPEG	Photos, complex images	✗ No	Small
WebP	Web images (best overall)	✓ Yes	Smallest

Free PNG Compressor Online

When to Use PNG vs JPEG vs WebP

Frequently Asked Questions

Free PNG Compressor Online

When to Use PNG vs JPEG vs WebP

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Frequently Asked Questions