Free Tool
True alpha, ICC profiles, verified straight-alpha exports
A background removal tool that respects your colour workflow.
The problem
Graphic designers need cutouts that composite correctly — straight alpha, preserved ICC profiles, and soft edges that don't introduce banding or halos. Most tools produce premultiplied alpha that breaks in Affinity Publisher and InDesign, or lose the colour profile entirely.
The NSS solution
NSS exports verified straight-alpha PNG and WebP with the original ICC profile preserved. Every export passes an automated alpha integrity check. Free, unlimited, with no per-render billing.
How to use it
- 1
Client asset cutouts for print production
Export high-resolution PNGs at 4K with preserved colour profiles for brochures, posters, and packaging.
- 2
UI asset preparation
Cut out photos and icons for app and web design mockups. Export WebP for screen use.
- 3
Compositing source images
Build a library of transparent PNG cutouts for campaign imagery. Straight alpha ensures they composite correctly in every tool.
- 4
Logo and brand mark isolation
Isolate logos or brand marks from white or complex backgrounds. Use "Preserve soft edges: off" for crisp, binary-alpha results on geometric shapes.
Step-by-step guide
- 1
Upload at the highest resolution available
NSS handles up to 4096 × 4096 px. For print work, upload the highest resolution original.
- 2
Check the ICC profile notice
If the image is in Display P3 or AdobeRGB, NSS shows a notice. The profile is preserved automatically — no colour conversion is applied.
- 3
Adjust soft vs hard edges
For photos: keep "Preserve soft edges" on. For logos and icons: turn it off for crisp binary alpha that won't introduce partial pixels at odd render sizes.
- 4
Verify the export
After download, the alpha integrity check runs automatically. If it passes, you'll see a checkmark. If it fails, you'll see a warning before download.
- 5
Import into your tool
Straight-alpha PNGs work correctly in Photoshop, Affinity, Figma, InDesign, Illustrator, and every other professional tool.
Common questions
Are ICC profiles preserved?
Yes. NSS reads the profile from raw bytes and reattaches it at export. You get the same colour space in the exported file as in the original.
What happens in Affinity Publisher with your exports?
They composite correctly. Straight alpha means the RGB values under transparent pixels are the actual pixel colours, not zeros — Affinity handles this as expected.
Can I use the exported PNGs in InDesign?
Yes. InDesign handles straight-alpha PNGs correctly. Place the file and the transparency composites as expected over backgrounds.
What about AVIF? Is it straight alpha too?
Yes. NSS explicitly disables premultiplication in the AVIF encoder and verifies the result with the same integrity check as PNG.
Ready to try it?
No account. No subscription. No images uploaded to any server.
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