Brushfactory › Formats › .sut

What is a .sut file?

A .sut file is a Clip Studio Paint sub tool — one exported brush. Unusually for a brush format, it is a complete SQLite database, so a database browser will open one and show you every table.

Convert a .sut All 12 conversions

What's inside one

Node

The brush itself. NodeName is the name you see in the Sub Tool palette; NodeVariantId points at the current settings and NodeInitVariantId at the defaults it resets to.

Variant

One row per variant, and one column per parameter — size, spacing, opacity and hundreds more. The column set is not fixed: it differs between Clip Studio versions, so a reader has to discover the columns rather than assume them.

MaterialFile

Tip and texture imagery. The FileData column holds an uncompressed tar archive of the material, with the PNGs inside it. Some materials are wrapped in Clip Studio's own .c2f container instead.

Where the pressure curves hide. Dynamics are not numeric columns — they are big-endian binary blobs in the *effector columns. A flags word selects which inputs are live (0x10 pressure, 0x20 tilt, 0x40 velocity, 0x80 random) and each active input carries a real curve as a list of 64-bit float points. It is a far richer dynamics model than most brush formats expose.

How to open it

On desktop, double-click the .sut or drag it into the Sub Tool palette. On iPad or phone, import it from the Sub Tool palette menu. Nothing else reads .sut natively — see the install guide.

Converting .sut

Out of Clip Studio Paint: Clip Studio Paint → Photoshop, Clip Studio Paint → Procreate, Clip Studio Paint → Krita.

Into Clip Studio Paint: Photoshop → Clip Studio Paint, Procreate → Clip Studio Paint, Krita → Clip Studio Paint.

What survives each trip, and what does not, is set out on the fidelity report.

Common questions

How do I open a .sut file? On desktop, double-click the .sut or drag it into the Sub Tool palette. On iPad or phone, import it from the Sub Tool palette menu. Nothing else reads .sut natively — see the install guide.

Can a .sut brush be used in another app? Not directly — brush formats are not interchangeable. Brushfactory reads the .sut into a universal schema and writes a native brush for Photoshop, Procreate, Clip Studio Paint or Krita, keeping the tip imagery, grain, spacing and pressure curves.

Everything on this page is taken from the reader that parses the format in Brushfactory itself (brushfactory/formats/sut.py), which was built against the applications' own source and against real files, not from a specification document.

Convert a brush →