What resolution do you need for an A4 pet portrait?
An A4 pet portrait needs 2,481 × 3,507 pixels for a true 300 DPI print, or 1,654 × 2,338 pixels at a more forgiving 200 DPI. That is about a 8.7 MP camera if the photo needs no cropping.
The international equivalent of 8x10. If you sell to the UK, EU or Australia you need this alongside the US sizes, not instead of them.
- Inches
- 8.27 × 11.69
- Aspect ratio
- 1:1.414
- Pixels at 300 DPI
- 2,481 × 3,507
- Pixels at 200 DPI
- 1,654 × 2,338
Check your customer’s photo against A4
Drop the file in. It is read on your device and never uploaded.
Drop a pet photo here
JPG, PNG, WebP or iPhone HEIC. You can paste from the clipboard too.
The photo is read on this device and never uploaded.
Will a phone photo print at A4?
Here is where the cameras your customers actually own land at this size, with the crop to 1:1.414 already accounted for.
| Source | Pixels | DPI at A4 | Verdict |
|---|---|---|---|
| iPhone main camera, 12 MP | 3,024 × 4,032 | 344 | Prints sharp |
| iPhone 48 MP ProRAW / HEIF Max | 6,048 × 8,064 | 689 | Prints sharp |
| Recent Samsung Galaxy, 12 MP | 3,000 × 4,000 | 342 | Prints sharp |
| Photo sent through WhatsApp | 1,200 × 1,600 | 136 | Too small |
| Instagram download | 1,080 × 1,350 | 115 | Too small |
| Entry-level DSLR, 24 MP | 4,000 × 6,000 | 483 | Prints sharp |
Common mistakes at A4
- Dividing raw pixels by inches. It ignores the crop to 1:1.414 and overstates the DPI, sometimes badly.
- Upscaling and calling it 300 DPI. Resampling a small file up to 2,481×3,507 produces a file with the right dimensions and none of the detail. The metadata says 300 DPI; the print says otherwise.
- Forgetting the DPI metadata entirely. Several print-on-demand services read the DPI field and will scale the image to suit it. A file with the right pixels but a 72 DPI tag can come back wrong.
- Accepting a messaging-app copy. WhatsApp and Messenger recompress to roughly 1200px on the long edge, which is 136 DPI at A4. Always ask for the original.
Every size, side by side
| Print size | Inches | Pixels at 300 DPI | Pixels at 200 DPI | Camera needed |
|---|---|---|---|---|
| 5x7" | 5 × 7 | 1,500 × 2,100 | 1,000 × 1,400 | 3.1 MP |
| 8x8" | 8 × 8 | 2,400 × 2,400 | 1,600 × 1,600 | 5.8 MP |
| 8x10" | 8 × 10 | 2,400 × 3,000 | 1,600 × 2,000 | 7.2 MP |
| A4 | 8.27 × 11.69 | 2,481 × 3,507 | 1,654 × 2,338 | 8.7 MP |
| 11x14" | 11 × 14 | 3,300 × 4,200 | 2,200 × 2,800 | 14 MP |
| 12x12" | 12 × 12 | 3,600 × 3,600 | 2,400 × 2,400 | 13 MP |
| 12x16" | 12 × 16 | 3,600 × 4,800 | 2,400 × 3,200 | 17 MP |
| A3 | 11.69 × 16.54 | 3,507 × 4,962 | 2,338 × 3,308 | 17 MP |
| 16x20" | 16 × 20 | 4,800 × 6,000 | 3,200 × 4,000 | 29 MP |
| 18x24" | 18 × 24 | 5,400 × 7,200 | 3,600 × 4,800 | 39 MP |
| 24x36" | 24 × 36 | 7,200 × 10,800 | 4,800 × 7,200 | 78 MP |
A4 questions
- What resolution do you need for an A4 pet portrait?
- An A4 print needs 2,481x3,507 pixels for a true 300 DPI result, or 1,654x2,338 pixels at a more forgiving 200 DPI. That is roughly a 8.7 MP camera if the photo needs no cropping at all.
- Can an iPhone photo print at A4?
- A standard 12 MP iPhone photo is 3024x4032 pixels, which gives about 344 DPI at A4 after cropping to the 1:1.414 aspect ratio. That clears 300 DPI, so it prints sharp.
- What aspect ratio is A4?
- A4 is 1:1.414 (8.27 by 11.69 inches). A phone photo is 3:4, so some cropping is required to reach 1:1.414, which is why the effective DPI is lower than raw pixels suggest.
- Do I need to add bleed to an A4 print file?
- Only if your print provider asks for it. When they do, the standard is 0.125 inches on every edge, which makes the file 2,556x3,582 pixels at 300 DPI. Keep anything important well inside that margin, because the bleed area gets trimmed off.