Resolution Scale vs. Editor Zoom: Trade‑off for UI Readability and Viewport Space

Answer to the Question

In practice, a moderate global Resolution Scale (1.15–1.25) tends to deliver the best balance of legibility and workspace. It enlarges all UI elements—including headers, panels, and the 3D viewport—by a uniform factor, so text becomes readable while the loss of viewport area remains within 20–30 %. If you need to preserve almost all viewport pixels, keep the global scale at 1.0 and rely on per‑editor zoom (sidebar toggle, header zoom, or full‑screen mode) to enlarge only the UI chrome.

Why This Works

Resolution Scale multiplies the entire UI, so the 3D canvas shrinks proportionally. A 1.25 scale reduces the viewport by 20 %, but increases label height by 25 %. That extra readability usually outweighs the small loss in modeling space for most users.

Per‑editor zoom only affects the UI chrome. The viewport stays at its native resolution, so you keep the full drawing area. However, the side panels can become cramped, and scrolling may be required to access tools, which can hurt usability for low‑vision users.

HiDPI / System Scaling Considerations

• Windows/Linux: The effective size is Resolution Scale × system DPI factor. A 200 % Windows scaling on a 1.25 global scale results in a 1.5× enlargement.
• macOS: macOS applies a more uniform scaling; the global scale is the only multiplier, so a 1.25 setting behaves consistently across Retina and non‑Retina displays.

Practical Steps for Blender 4.x

1. Open Edit → Preferences → Interface.
   • Set Resolution Scale to 1.15 or 1.25.
   • Click Restart Blender if prompted.
2. To keep viewport space, set Resolution Scale back to 1.0.
   • Use View → Zoom In/Out in the 3D viewport or toggle the N‑panel to enlarge only the UI chrome.
   • Press Ctrl + Tab in the 3D view to switch to full‑screen mode, which hides all panels.
3. Test readability: measure a header’s pixel height before and after scaling.

What Else Might Influence Your Choice?

If you work on a very high‑resolution monitor (e.g., 4K) or use multiple monitors with different DPI settings, you may want to keep the global scale low and rely on editor zoom to avoid a cramped viewport on the larger screen.

For users who rely heavily on the sidebar tools, a higher global scale can be more comfortable, because it keeps the entire UI at a readable size without scrolling.

Missing Diagnostic Detail

To fine‑tune the recommendation, could you let me know your operating system’s display scaling setting (e.g., 100 % or 200 % on Windows, retina scaling on macOS) and the physical resolution of your primary monitor?