800 x 800 pixels is a square with real platform anchors: it's the profile picture size used on Twitch and YouTube, and the minimum size SoundCloud accepts for track cover art. That makes it a dependable default for any square upload that needs to be more than a thumbnail.
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Both Twitch and YouTube use an 800 x 800 square for channel profile pictures. Each platform displays the photo as a circle, so keep the subject centred inside the square.One 800 x 800 export covers both platforms — useful for creators who maintain matching branding across channels.
SoundCloud requires track artwork to be a square of at least 800 x 800 pixels. Smaller uploads are rejected; larger squares are accepted and downscaled.Cover art is often viewed small — in feeds and embedded players — so check that titles and artwork read clearly when the square is shrunk.
Above avatar territory but below product-master weight, 800 x 800 works for podcast tiles, community icons, and square posts on platforms without a published spec.For marketplace product listings, size up instead — Amazon's zoom feature needs at least 1,000 pixels on the longest side.
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Twitch and YouTube both use 800 x 800 for channel profile photos. Both display the image as a circle, so centre the subject within the square.
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