NexusCompress · Compress PNG without losing transparency
Logos, product cutouts, and UI icons with transparent backgrounds are often much larger than needed. Here is how to shrink PNGs while keeping transparency intact.
Why PNG files are large
PNG is lossless — every pixel is stored exactly. A high-resolution logo export can easily reach 2–5 MB.
Options for compressing transparent PNGs
| Method | Transparency? | Size reduction | Best for |
|---|---|---|---|
| Convert to WebP | Yes | 25–50% | Websites, apps |
| Convert to AVIF | Yes | 30–60% | Modern browsers |
| Stay as PNG | Yes | 5–20% | Max compatibility |
| Convert to JPEG | No | 60–80% | Photos only |
Never convert a transparent PNG to JPEG. Transparent areas become solid white or black.
Best approach: convert to WebP
WebP supports full alpha transparency like PNG, with files 25–50% smaller. All modern browsers support it.
How to compress in NexusCompress
- Open NexusCompress.
- Under Output format, select WebP (or keep PNG).
- Set quality to 85–90% for logos and cutouts.
- Drop your PNG and download.
- Use the before/after slider to confirm transparency is preserved.
For logos: Use 90%+ WebP quality to keep sharp edges on text and fine lines.
When to stay as PNG
For email clients, print workflows, or legacy software that does not support WebP — stay in PNG. NexusCompress still reduces file size with lossless optimisation.
Batch compress PNG assets
Drop an entire assets folder, set output to WebP, download as ZIP — all processing stays in your browser.
Frequently asked questions
Can you compress PNG without losing transparency?
Yes — convert to WebP or keep PNG. Both preserve transparency fully.
Does JPEG support transparency?
No. Use WebP or PNG for transparent backgrounds.
What quality for transparent WebP logos?
85–95% to avoid colour fringing on transparent edges.
Does AVIF support transparency?
Yes, but browser support is slightly lower than WebP. WebP is the safer choice for compatibility.