Resize images for Facebook

Resize images for Facebook — including the 820×312 cover — with presets that keep everything crisp. All resizing happens in your browser.

Privacy-first: every image is processed locally in your browser. Nothing is uploaded, stored or transmitted to any server.

Facebook’s awkward cover math

Facebook covers render around 820×312 on desktop but get cropped to a narrower slice on mobile — the edges disappear and only the central area survives on every device. Resize to the exact 820×312 canvas and keep faces, logos and text near the middle, and the cover works everywhere.

Posts and link previews

For shared links and post images, 1200×630 is the sweet spot — it doubles as the standard Open Graph size, so the same file works for Facebook posts and link previews across the whole web. The Fill/Fit preview shows exactly how your photo maps into either target before you download, all processed in your browser.

Frequently asked questions

Does resizing happen on a server?
No. Images are resized in your browser with high-quality step-down scaling for crisp results. Nothing is uploaded.
Will resizing keep the aspect ratio?
Yes by default. Enable “maintain aspect ratio” to fit within your target box without distortion, or turn it off to force an exact width and height.
Are there presets for social media?
Yes. There are presets for Instagram, Facebook, X/Twitter, YouTube and LinkedIn, plus common web, avatar and thumbnail sizes.
Can I enlarge images?
Yes, though enlarging cannot add detail that is not there. Downscaling produces the sharpest results.
Can I resize images in bulk?
Yes. Resize many images at once and download them together as a ZIP.