Resize Image for Facebook Cover — Free Online Tool
Facebook cover photos display at 851x315 pixels on desktop — a wide panoramic banner. PDFBro resizes your image to these exact dimensions online for free, with no signup. Get a perfectly sized cover photo that displays correctly across both desktop and mobile Facebook without unexpected cropping.
Free Online Tool
Resize Image
Resize any image to exact dimensions — set custom width and height, maintain aspect ratio
How to Resize an Image for Facebook Cover
Upload your image
Drag and drop any image into PDFBro's resize tool. Supports JPEG, PNG, WebP, and SVG formats up to 100 MB. Works on desktop, tablet, and mobile browsers.
Set dimensions to 851x315
Enter 851 for width and 315 for height. This is the exact Facebook Cover resolution (2.7:1 (wide) aspect ratio). Enable 'Maintain aspect ratio' for proportional scaling, or disable it to force exact dimensions if your original aspect ratio differs.
Download your resized image
Click Resize and download your perfectly sized Facebook Cover image. Zero watermarks, zero quality loss from the resize operation, instant download. Use it directly on Facebook.
Best Uses for Facebook Cover Images
Facebook Page covers, personal profile banner images, event page headers, group cover graphics, business page branding, seasonal promotions, and portfolio headers. A well-sized cover makes your Facebook presence look professional and inviting.
Why Use PDFBro to Resize Images
Frequently Asked Questions
What is the correct Facebook cover photo size?
851x315 pixels on desktop, but Facebook crops to roughly 640x360 on mobile. The safe area for text and logos is the center of the image (approximately the middle 560x315 pixels). PDFBro resizes to the full 851x315 desktop dimensions — position important elements in the center third.
Why does my Facebook cover look cropped on mobile?
Facebook shows a narrower crop of your cover on mobile devices. Design your cover with a 3-5% margin on all sides — place logos and critical text in the center 60% of the image where it's visible on both desktop and mobile.
Should I use JPEG or PNG for Facebook covers?
JPEG at 85-95% quality is ideal for photo-based covers — small file size under Facebook's 100 KB recommendation for fast loading. Use PNG only if your cover has text overlays or a logo that needs maximum sharpness. PDFBro handles both formats.
What file size should my Facebook cover be?
Facebook recommends keeping cover photos under 100 KB for fast loading. PDFBro's resize tool can also compress your image after resizing. For 851x315, a JPEG at 80% quality typically stays under 100 KB and looks crisp on screen.