Digital Negative Lab

Digital Negative Lab

Create print-ready digital negatives with simple curve control and built-in presets

Upload a photo and instantly generate a calibrated digital negative for cyanotype, platinum/palladium, gum bichromate, salt printing, and more.

What Digital Negative Lab Does

Digital Negative Lab converts your photos into clean, consistent digital negatives — no complicated software required. You can tweak contrast and curves manually or let the built-in presets handle the hard work for you.

Automatically converts your photo to a high-contrast negative
Designed specifically for alt-process printing
Use simple manual adjustments or curated presets
Works right in your browser

Made for Alt-Process Makers

Built for artists and printers who want reliable results without technical headaches.

Cyanotype printers
Platinum / palladium & salt printers
Gum bichromate artists
Printmakers and mixed-media creators
Anyone tired of curve-guessing and inconsistent results

Start Free. Unlock Pro When You're Ready.

The Free version gives you a simple, clean negative. Pro unlocks advanced presets, finer control, and print-ready high-resolution output.

Free Version

Get started instantly

  • Upload image
  • Automatic negative conversion
  • Flip horizontal
  • Basic contrast control
  • Standard-resolution export
  • Pro-only presets visible but locked

Pro Version

For serious printing

  • High-resolution export (300–600 DPI)
  • Process-specific curve presets:
  • – Cyanotype
    – Platinum/Palladium
    – Gum bichromate
    – Salt printing
  • Density calibration
  • Advanced contrast + highlight/shadow mapping
  • Manual curve control + full preset library
  • Best choice for consistent, repeatable prints

Compare Free and Pro

FeatureFreePro
Auto-convert photo to negative
Flip horizontal
Basic contrast control
High-resolution export for large prints
Full set of tonal presets
Density calibration engine
Better highlight and shadow handling
Manual curves + advanced options

How It Works

Step 1

Upload your image

Drop in a JPG or PNG you want to print.

Step 2

Choose your adjustments

Use simple manual curve tools or choose a built-in preset (Pro).

Step 3

Download your negative

Save the file and print onto transparency film for contact printing.

Built by Makers, for Makers

Digital Negative Lab was created for artists who love alternative photographic processes but don't want to wrestle with complex software just to create a good negative. It offers fast, dependable results so you can spend more time printing and less time adjusting curves.

Ready to Make Better Negatives?

Start with the Free version to test the workflow. Upgrade to Pro anytime to unlock full presets, calibration, and print-ready resolution.