Slab Square Otfa 13 is a regular weight, normal width, low contrast, upright, normal x-height font.
Keywords: editorial, headlines, book text, branding, packaging, authoritative, classic, institutional, sturdy, readability, authority, heritage, stability, clarity, bracketed, robust, crisp, high-clarity, traditional.
A sturdy slab-serif with thick, blocky serifs and subtly bracketed joins that soften the corners without losing its squared, anchored feel. Strokes are broadly even, with rounded interior curves and generous counters that keep the letterforms clear at text sizes. Uppercase proportions feel traditional and slightly wide, while the lowercase maintains steady rhythm through strong verticals and straightforward bowls; the two-storey “a” and “g” reinforce a conventional, bookish texture. Numerals are solid and open, with a clear, oval “0” and compact, confident figures suited to running text and headings.
Well suited to editorial layouts, book and magazine typography, and headline work where a firm, traditional presence is desired. The clear counters and robust slabs also make it effective for packaging and brand systems that need a trustworthy, heritage-leaning tone while remaining readable in longer passages.
The overall tone is dependable and authoritative, evoking editorial and institutional typography rather than display novelty. Its heavy, grounded serifs and calm rhythm read as confident and familiar, lending a serious, established voice to copy and titles.
The font appears designed to deliver a classic slab-serif voice with strong structure and reliable readability, pairing bold, square-shouldered details with softened brackets for a controlled, text-friendly texture.
The design emphasizes stability through flat terminals and consistent vertical stress, producing an even gray value across lines. Spacing appears balanced and slightly generous, helping the bold serifs avoid clogging and supporting legibility in dense paragraphs.