1.1 Inter, in Inter
Every word on these slides is set in Inter — the specimen is the deck. A typeface drawn for user interfaces: open apertures, generous x-height, and letterforms that stay apart at small sizes.
Inter—a specimen
1. The Face
1.2 A side project that stuck
Rasmus Andersson began Inter in 2016 as a side project while at Figma, unhappy with how existing UI faces read at small sizes; the first glyphs shipped in August 2017. It is free under the SIL Open Font License and now covers 140+ languages (rsms.me/inter).
2. Under the Hood
2.1 100 to 900 in one file
One variable file carries every weight from Thin 100 to Black 900 — this portfolio declares :weight [100 900] and the browser interpolates the rest. A second file adds true italics.
2.2 Numbers that line up
OpenType features are configuration, not artwork: this deck sets \"tnum\" 1 so 11:11 and 24.00 align in columns, and \"cv05\" 1 for the round lowercase l. Compare: 1111 / 2400 / 0.618.
3. In plinth
3.1 A font is data
In plinth, a font is data: files in the portfolio, a :fonts entry with its licence recorded, :font-body to use it. The engine vendors Inter 4.1 sha-pinned — bb font-copy drops it into any portfolio.