Slab Square Opju 4 is a very bold, normal width, low contrast, upright, normal x-height font visually similar to 'Hailgen' by Akufadhl (names referenced only for comparison).
Keywords: headlines, posters, packaging, signage, branding, assertive, playful, retro, friendly, rugged, impact, retro flavor, texture, clarity, chunky, blocky, ink-trap, bracketed, bouncy.
A heavy, chunky slab serif with compact proportions, low contrast, and broad, squared-off serifs that read as firmly planted and architectural. Strokes are thick and mostly uniform, with subtle notches and stepped joins that create an ink-trap-like, cut-in feel at corners and inside counters. The lowercase is wide and sturdy with large bowls and soft curves, while terminals and serifs keep a crisp, flattened finish that enhances its blocky silhouette. Figures are bold and round, matching the overall mass and maintaining consistent rhythm in text.
Best suited for display use where bold presence matters: headlines, posters, labels, and storefront-style signage. It can also work for branding systems that want a vintage-meets-industrial voice, especially when set in short bursts or large sizes where the notch details remain clear.
The overall tone is confident and punchy, with a slightly quirky, hand-cut industrial character. Its stout shapes and notch details evoke vintage poster typography and old-school packaging, balancing toughness with a friendly, approachable warmth.
The font appears designed to deliver maximum impact with a sturdy slab-serif framework while adding distinctive corner cut-ins for character and improved internal clarity. It aims for a retro display voice that feels robust, readable, and immediately attention-grabbing.
In running text the dense color and pronounced slab structure create a strong horizontal emphasis, while the small corner cut-ins add texture and help keep forms from clogging at display sizes. The design’s personality comes through most clearly in the rounded letters and numerals, where the heavy weight meets unexpectedly playful shaping.