512 x 512 pixels is the app-icon standard: Google Play requires a 512 x 512 store icon, web app manifests use 512 x 512 as the standard large icon, and Discord server icons upload at the same size. It's the square to design icons at before they get scaled down everywhere else.
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Google Play store icons are required at 512 x 512, and web app manifests list 512 x 512 as the standard large icon — this square is the reference size for app iconography.Design with simple shapes and strong contrast: the icon will spend most of its life displayed at a tenth of this size.
Discord server icons upload at 512 x 512 and render as circles in the server list, so the corners of the square are trimmed away.Centre the logo or emblem and leave margin around it — artwork that touches the edges of the square gets clipped by the circular mask.
As a power of two, 512 halves cleanly to 256, 128, and 64 — the sizes icon packs and favicons actually ship at — with no fractional-pixel blurring.Always test the downscaled result: detail that reads at 512 pixels often vanishes at 64. Simplify until the smallest size still works.
Pick the image from your library that you want to resize to 512 x 512 pixels.
Upload your image and use a tool to resize it to 512 x 512 pixels.
Once it's ready, save your resized image to your device.
Google Play requires store icons at 512 x 512 and web app manifests standardize on it for the large icon. As a power of two it also downscales exactly to 256, 128, and 64.
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