Resize any image to Facebook cover photo size (820×312) — free, instant, private.
Facebook cover photos display at 820x312 pixels on desktop and 640x360 pixels on mobile. The cover photo is the first thing visitors see on your Facebook page or profile, so proper sizing is essential for making a strong first impression. Images smaller than 820x312 will be stretched and appear blurry. For the sharpest result, upload at exactly 820x312 pixels to avoid any compression or scaling by Facebook.
Story Format is a free, browser-based resizer built for speed and privacy. Unlike other tools, your files are never uploaded to any server — all processing happens locally in your browser. There's no sign-up, no watermark, and no limit on how many files you can convert. It supports both images (JPG, PNG, WebP) and videos (MP4, MOV, WEBM) with audio preserved.