About the Facebook Cover Tool
Facebook cover photos must be exactly 820x312 pixels on desktop and 640x360 on mobile. Our resizer applies a smart cover-fill algorithm to any image, ensuring your cover fits perfectly without stretching or black bars.
100% Private — Processed in Your Browser
Every file stays on your device. DCPIXEL processes images entirely using the browser's built-in Canvas API and WebAssembly — zero server uploads, zero data collection.
Free — No Account, No Limits
DCPIXEL is completely free with no daily limits, no watermarks, and no registration. We never process your files on our servers, so we can offer this permanently at no cost.