Facebook Vertical Post Resizer

What Is the Best Size for a Facebook Vertical Post in 2025?

The short answer: The best and most recommended size for a Facebook vertical post is 1080 x 1350 pixels.

This 4:5 aspect ratio ensures your image looks its best on mobile devices, where most people will see it. It fills the screen, prevents awkward cropping, and makes your content look professional.

To get this size instantly without any guesswork, you can use our simple, free image resizer right here.

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Why Is 1080x1350 the Right Size?

It comes down to one thing: screen real estate. Think about how you scroll through Facebook on your phone. Your screen is a vertical rectangle. A 1080x1350 image is also a vertical rectangle, meaning it takes up the maximum amount of space possible. This makes your post more eye-catching and stops people from scrolling right past it. A wider or shorter image simply gets lost in the feed.

How Do I Resize My Photo to 1080x1350 for Free?

You don’t need complicated or expensive software. You can get the perfect size in three quick steps using our tool:

1. Upload Your Photo: Click the upload area and select the image file (like a JPG or PNG) from your phone or computer.
2. Let the Tool Do the Work: The moment it's uploaded, our tool automatically resizes your image to the exact 1080x1350 dimensions.
3. Download and Post: Just click "Download." You'll have a perfectly sized, high-quality image ready for Facebook.

What Happens If I Just Upload a Different Size to Facebook?

This is the mistake most people make. If you upload a photo that isn't in a 4:5 ratio, Facebook will try to "fix" it by automatically cropping it for the mobile feed. Its choices are often… not great. You risk cutting off people's heads, the edges of your product, or key parts of your message. Resizing it first means you are in control of how your image looks.

Will Resizing My Photo Make It Blurry?

Not with our tool, as long as you start with a decent-quality photo. Our resizer is engineered to maintain your image’s sharpness. The only time you'll ever see blurriness is if you try to take a tiny, low-resolution thumbnail and stretch it to a much larger size. For best results, always start with the original, high-quality version of your photo.

Is This Different From a Facebook Story or Reel Size?

Yes, absolutely. This is a critical distinction.

• Feed Post (this tool): 1080 x 1350 (a 4:5 ratio)
• Story / Reel: 1080 x 1920 (a much taller 9:16 ratio)

They are not interchangeable. Using a feed post image in your Story will result in large empty bars. Always use the right dimensions for the right placement.

Is This Tool Really Free to Use?

Yes. 100%. We made it because we were tired of dealing with this exact problem ourselves. There is no account needed, no trial period, no watermarks, and no hidden fees. It’s just a simple, effective tool to help you create better-looking content.