Checked against the source
Facebook post image size
Short answer
The Meta Ads Guide recommends 1440 × 1800 pixels at 4:5 for a Facebook Feed image, in JPG or PNG up to 30 MB, at least 600 px wide (750 px tall at 4:5).
Key takeaways
- 4:5 at 1440 × 1800 is 2.59 megapixels; the minimum 600 × 750 is 0.45 megapixels, 17% of that (computed).
- The 30 MB limit is far above what a JPG of this size needs: our six pictures were between the sizes in the table below.
- A square (1:1) photo keeps 80% of its area in a 4:5 frame, a 16:9 photo keeps 45% (computed).
- Across our six test pictures the 1440 × 1800 result was 335 KB to 697 KB as a JPG at quality 0.92.
The size
| What | Value |
|---|---|
| Width | 1440 px |
| Height | 1800 px |
| Aspect ratio | 4:5 |
| Where this comes from | Meta Ads Guide: Facebook Feed image (the ads specification; organic posts follow the same image shapes). |
What the platform publishes
| What | Published value |
|---|---|
| Recommended | 1440 × 1800 px (4:5) |
| Formats | JPG or PNG |
| Minimum | 600 px wide; 750 px tall at 4:5 |
| Maximum file size | 30 MB |
Meta publishes these numbers for Feed image ads; there is no separate official spec for organic posts.
Source: Meta Ads Guide: Facebook Feed image (checked 2026-10-05)
Resize it now
Scales and center-crops any image to exactly 1440 x 1800 px, in your browser. Nothing is uploaded, there is no file size cap and no daily limit.
Batch is unlimited and free - every image is processed on your device, so there is no queue and no daily cap.
What a 1440 × 1800 frame does to common photo shapes
The frame is 4:5. A photo of another shape is scaled until it covers the frame and the excess is cut from the center, which is what the resizer on this page does. This is computed from the shapes.
| Photo shape | Share of the photo kept | What is cut |
|---|---|---|
| 16:9 (1920 × 1080) | 45% | The sides |
| 3:2 (3000 × 2000) | 53% | The sides |
| 4:3 (4000 × 3000) | 60% | The sides |
| 1:1 (2000 × 2000) | 80% | The sides |
| 4:5 (1080 × 1350) | 100% | Nothing |
| 9:16 (1080 × 1920) | 70% | The top and bottom |
Computed.
Measured: six pictures through the resizer
The resizer on this page was run in headless Chromium on six test pictures (public domain NASA scans, a PNG graphic and two small pictures made from them): each is scaled to cover 1440 × 1800, drawn on a white background and saved as a JPG at quality 0.92. SSIM compares each result with a Lanczos crop of the same picture made by ffmpeg (1.0 would be identical); it is blank when the frame has an odd side, which ffmpeg's check cannot compare. Other browsers use their own encoders, so sizes can differ.
| Picture | Pixels | Scale | Result | Time | SSIM | Against the 30 MB limit |
|---|---|---|---|---|---|---|
| Photo, nearly square | 3840 × 3877 | 0.46× | 697 KB | 36 ms | 0.91 | Under |
| Portrait | 2122 × 2644 | 0.68× | 499 KB | 38 ms | 0.94 | Under |
| Wide document scan | 3827 × 1588 | 1.13× (enlarged) | 581 KB | 34 ms | 0.97 | Under |
| Square PNG graphic | 5380 × 5432 | 0.33× | 574 KB | 33 ms | 0.91 | Under |
| Small portrait (1060 px) | 1060 × 1320 | 1.36× (enlarged) | 383 KB | 34 ms | 0.97 | Under |
| Small landscape (640 px) | 640 × 480 | 3.75× (enlarged) | 335 KB | 35 ms | 0.97 | Under |
A scale above 1 enlarges the picture to fill the frame; enlarging adds no detail, so start from a file at least as large as the frame. The limit used above is the 30 MB limit.
Detail decides the file size (measured)
The same frame holds 2.59 megapixels whatever the picture, but the JPG size follows the detail in it. Bits per pixel is the file size in bits divided by the number of pixels in the frame.
| Picture | Result | Bits per pixel |
|---|---|---|
| Photo, nearly square | 697 KB | 2.15 |
| Portrait | 499 KB | 1.54 |
| Wide document scan | 581 KB | 1.79 |
| Square PNG graphic | 574 KB | 1.77 |
| Small portrait (1060 px) | 383 KB | 1.18 |
| Small landscape (640 px) | 335 KB | 1.03 |
Smooth areas and flat color compress to a fraction of what fine detail needs; a photograph full of texture is the expensive case. If a size limit matters, check your own picture, not an average.
Using the Facebook post image size
- Start from a file at least 1440 × 1800 pixels so nothing is enlarged.
- Keep faces, logos and text away from the edges; every crop above cuts the edges.
- Check the platform's own page before you rely on a figure; sizes change.
- The resizer above does the crop and the JPG in your browser; nothing is uploaded.
Frequently asked questions
What size is a Facebook post image?
1440 × 1800 px at 4:5 is recommended in Meta's Ads Guide; at least 600 px wide.
JPG or PNG?
Both are accepted. A JPG is much smaller for photographs; use PNG for graphics with text.
How much of a 16:9 photo is kept in 1440 × 1800?
45% of its area (computed).
What is the aspect ratio of 1440 × 1800?
4:5, 2.59 megapixels.
How big will the file be?
Our six test pictures came out between 335 KB and 697 KB as JPGs at quality 0.92; detailed photographs are the large end.
Is my picture uploaded?
No. The resizer runs in your browser.
Other Facebook sizes
Sources
- Meta Ads Guide: Facebook Feed image (checked 2026-10-05)
- Wikimedia Commons: Buzz salutes the U.S. Flag (NASA, public domain), one of the test pictures (checked 2026-10-10)
- MDN: HTMLCanvasElement.toBlob() (JPEG quality) (checked 2026-10-10)
