Scalings glyphs as group with metrics?

[Dezcom]

I am attempting to scale the glyphs as a group down to a smaller size [not UPM] and have done so but an unable a way todo it while scaling metrics and side bearings at the same time. Is this possible in Glyphs or must I manually go back and reconfigure side bearings one glyph at a time?

[George_Thomas]

You can do that by scaling the UPM. This thread has information from Mekkablue about that:

Font UPM size like in FontLab?

Let’s say you are designing a font in 1000 UPM. Scale to UPM changes the resolution of units. If you scale it to 2000, the outline that was 1000 before scaling becomes 2000, and the visual size at given font size stays the same. If you scale UPM to whatever value in instance, it will look of the same size, only different in outline quality (try scaling to 50 to see what I mean). UnitPerEm does not change your outline or metrics. If you simply change UPM to 2000, that 1000 unit outline stays 10…

[Dezcom]

But then my UPM is wrong. Do I have to scale the UPM down to the size that I want, then rescale the UPM back to 1000 without scaling outlines?

[George_Thomas]

Yes.