Resize Image for Facebook Cover Photo — 820×312px
Facebook displays cover photos at 820×312px on desktop and crops them to 640×360px on mobile. Getting this right means your cover looks good on both devices — with your key content, text, and faces positioned in the safe zone that appears on both. This guide explains the exact dimensions and safe zone, and resizes your image to 820×312 in seconds.
Quick Answer
Facebook displays cover photos at 820×312px on desktop and crops them to 640×360px on mobile. Getting this right means your cover looks good on both devices — with your key content, text, and faces positioned in the safe zone that appears on both.
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Your images stay on your device. Nothing is uploaded to any server.
Step-by-Step Guide
5 steps · takes under 1 minute
Open the Image Resizer
Go to the Resize tool — runs in your browser with no upload, no account, and no watermark on the output.
Upload your image
Drop your photo or graphic onto the upload zone. JPG and PNG are both accepted and work well for Facebook covers.
Click the 'Facebook Cover' preset
The Facebook Cover (820×312) preset is in the social media presets panel. One click sets both dimensions and disables aspect ratio lock.
Or enter dimensions manually
Turn off 'Maintain aspect ratio'. Set Width to 820 and Height to 312. Click resize.
Keep key content in the mobile safe zone
Before downloading, note that mobile displays show only the central 640×360 area. Keep faces, logos, and text within the central portion of the image — avoid the far left and right 90px strips if mobile visitors matter.
100% Private — Zero Uploads
ImgToolkit runs entirely in your browser using the Canvas API. Your images are never sent to a server, never stored in the cloud, and never seen by anyone else. This makes it safe for sensitive documents, client work, medical imagery, and confidential screenshots.
Pro tip
Use 75–85% quality for web images — you get 60–80% smaller files with no visible difference at normal screen sizes.
Format & File Size Comparison
Same 1080×1080px photo processed four ways
| Format | Quality | File Size | Notes |
|---|---|---|---|
| PNG (original) | Perfect | 4.2 MB | No compression — too large for web |
| Compressed PNG | Visually identical | 1.1 MB | −74% — transparency preserved |
| JPG (85% quality) | Excellent | 310 KB | −93% · Best for photos |
| WebP (85%)BEST | Excellent | 205 KB | −95% · Recommended for web |
Based on a 1080×1080px photo. Results vary by image content and complexity.
Related Free Tools
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Frequently Asked Questions
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Resize for Facebook Cover