Files stay on your device. Enter send · Esc close drawers
800×800 PNG · circular display
Each social platform crops uploaded media to its own aspect ratio before showing it in feeds. Uploading at the platform's native size — here, YouTube feed posts — preserves the framing you intended and avoids the soft-focus that comes from the platform's own resampler. This preset outputs 800×800 PNG at the square ratio that YouTube expects.
| Output dimensions | 800×800 pixels |
|---|---|
| Aspect ratio | 1:1 (square) |
| Output format | PNG |
| Processing | 100% in your browser — no upload |
| Cost | Free, unlimited |
| Source | Official guidelines |
Audience: 2+ billion monthly viewers.
How YouTube ranks images: thumbnail click-through rate is the dominant signal for algorithmic distribution. Posting at the platform's exact native dimensions (800×800 px) preserves your original framing and avoids the softening that happens when the platform's own resampler runs to fit its expected size.
Platform-specific note: YouTube serves multiple thumbnail sizes; the source must be 1280×720 minimum to avoid upscaling.
This preset is a deterministic recipe — every step has fixed parameters so the result is byte-identical across runs of the same input.
YouTube Channel Icon crops your input to 1:1 and resizes it to 800×800 px as PNG — a 640-kilopixel output. The work runs through canvas APIs and a WebAssembly image-encoder; the source image is decoded into an off-screen canvas, transformed in place, and re-encoded without any network upload.
Social-platform uploads frequently re-encode the file at the platform's CDN; running this preset locally before upload lets you see the exact pre-upload state. The browser-side path also means the file never leaves your device — relevant when the input contains personally identifiable information, screenshots of private documents, ID scans, or proprietary product photography.
800×800 px, saved as PNG.
The social this preset targets uses 1:1 framing. For passport photos this matches the printed-photo standard; for social posts it's the safe ratio that fills the feed without horizontal cropping.
PNG preserves hard edges and transparency that JPEG would smear. Icons, logos, and screenshots compress better as PNG when the image isn't photographic.
No. This preset runs entirely in your browser using WebAssembly + canvas APIs — no server round-trip. You can verify this in your browser's network panel: only static asset requests, no image upload. The file never leaves your device.