What is the 4:3 Aspect Ratio?
The 4:3 aspect ratio is a near-square legacy format common in older cameras and videos. It’s less dominant in modern mobile feeds but still appears in archives and stock. Because so many historical assets were captured at 4:3, advertisers frequently encounter it when repurposing content. With careful reframing, 4:3 can still contribute to modern campaigns.
Understanding 4:3
The 4:3 aspect ratio can crop awkwardly in vertical feeds if used directly. When repurposing, consider padding or reframing to 1:1 or 4:5 to maintain composition and legibility. The slightly taller‑than‑wide frame preserves subject prominence while giving room for captions or supers. When used intentionally for a retro or documentary feel, 4:3 can stand out in feeds. Always preview across devices to confirm that type and logos remain readable.
Because many archives and stock libraries are 4:3, it’s a practical source for modern campaigns with careful adaptation. Plan safe zones around titles and brand marks before cropping. Extend backgrounds or use subtle gradient padding to fit feed‑first ratios. Keep copy short and high‑contrast for mobile legibility. Validate that the creative doesn’t look unintentionally pillarboxed.
Why 4:3 matters
The 4:3 aspect ratio allows legacy footage and photography to be reused efficiently. It speeds production by turning archives into modern, feed‑ready assets. It also supports editorial or documentary aesthetics when that look is intentional.
- Many legacy libraries and stock assets are 4:3
- Quick to adapt to 1:1 or 4:5 with minimal cropping
- Useful for editorial or documentary aesthetics
How 4:3 works in practice
Convert the 4:3 aspect ratio to feed‑first ratios by protecting the subject and key text before cropping. Use background extensions or gradient padding to conform to 4:5 or 9:16 without destructive trims. Consider a square master for carousels and a portrait version for feed height where presence matters. If the 4:3 aesthetic is deliberate, keep compositions simple and type large to combat smaller in‑feed rendering. Check for unintentional pillarboxing and ensure it reads cleanly in light and dark UIs. Test static and light‑motion variants to find the best engagement with minimal clutter.
Key Takeaways
- 4:3 is a classic aspect ratio once standard for TVs and monitors, now used for some display ads.
- Export at 1024x768 or higher to maintain quality.
- Less common in modern social feeds; prioritize 1:1, 4:5, and 16:9 for better coverage.
- Use templates to maintain consistent branding if 4:3 is required for specific placements.
