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SQUIG to FabFilter Pro-Q 3/4 converter

heraldo_jones

Active Member
Joined
Dec 28, 2020
Messages
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Hey everyone! I tend to build small apps to make my daily PC workflow easier, but this time I decided to share one with the world.

People who know me are aware that I’m a bit of an audio snob : my headphone collection (closed-back over-ear, open-back, dynamics, planars, IEMs…) could easily compete with the number of diapers a baby goes through. I’m always trying to squeeze every drop of performance out of them — and a huge part of that is proper EQ.

Until now, whenever I wanted to dial in a specific model, I’d go to https://squig.link/, look up its measurement, design the EQ, and then manually recreate every point in my EQ of choice.
On Windows people usually go with APO EQ — great tool, but even with the PEACE GUI it’s still not super friendly. On macOS you have options like SoundSource and its Headphone EQ. In my case, as a Mac user and because I use it daily as a mix engineer, FabFilter Pro-Q in SoundSource has always been the most convenient for me.

And of course, when you have to enter several EQ points with all their parameters, the whole process becomes pretty tedious… so I made:

https://github.com/FranMCodes/squig-to-ffp-converter

️ A desktop app (Electron + TypeScript) that converts SQUIG .txt curves into FabFilter Pro-Q 3/4 presets — and vice versa — instantly, fully offline, without relying on the cloud.

What exactly does it do?

  1. Converts SQUIG (.txt) ⇄ FabFilter Pro-Q (.ffp) presets.
  2. Handles automatic saving into FabFilter’s preset folders.
  3. Respects the 24-filter limit per instance to stay compatible with Pro-Q.

The workflow is simple: choose the target format, load (or drag & drop) your SQUIG or FFP file, and hit Convert. The app takes care of everything.

Availability
macOS: universal DMG, Apple Silicon & Intel.
Windows: portable executables for x64 and ARM64.

I know some people prefer other parametric EQs, but given FabFilter’s status as an industry standard — and the fact that its preset system was the easiest to work with (well… except for Pro-Q 3, since its preset is encoded using FLOAT) — it ended up being the best candidate.

It's a pleasure to share it with you all, and I hope it will be helpful to someone.
 
Well fam, I unexpectedly had an almost free day yesterday and decided to push a necessary update. You can download the new version here:
https://github.com/FranMCodes/squig-...ses/tag/v1.0.1

FIXES:

1. Implemented a correct system to convert Q values to FabFilter Pro-Q logic.
2. Added system to app name.
3. Version upgraded to 1.0.1.

What’s all that FabFilter logic about? It turns out that instead of using 0.707 as the standard “flat” resonance Q value, FabFilter uses a value of 1. I wasn’t aware of this until a fellow user on Gearspace pointed it out to me. It’s now been corrected and works properly.
 
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