The essential resource for film processing and darkroom printing.

Browse hundreds of photo chemistry formulas, including hard to find recipes for toning, lith printing, and alternative processes.

Create custom processing timers and photochemistry formulas to match how you prefer to work.

Save your favorite processing timers and formulas for easy access later. Edit them any time.

Use pre-configured timers for all manufacturer recommended film + developer combinations.

Includes specialized recipes for working with motion picture film.

Explore chemistry options for a more sustainable practice without sacrificing results.

Switch easily between white and red safelight themes for working with light sensitive materials.

Exact amounts for all ingredients are derived from the desired volume of chemistry.

Quickly determine how to mix working solutions from stock solutions, and how to dilute from one strength to another.

Chart printing time by f-stops for calculating exposure when printing or dodging and burning.