Crop Image 3:4
Crop image 3:4 for product photos, prints and the Instagram grid: an upright frame in your phone camera's own shape opens over the picture, and you tighten it or slide it into place.
Drop an image to crop it to 3:4
The 3:4 portrait frame opens on your picture. Slide it to choose what stays. Or press Ctrl + V to paste one straight from your clipboard. PNG, JPG or WebP, up to 25 MB. Edited in your browser, never uploaded.
A 3:4 portrait crop
cut to the shape your camera sees in.
Most phone cameras shoot 4:3, so an upright phone photo is 3:4 before you touch it. The crop earns its keep on everything else: a camera frame, a screenshot, a sideways shot, or a phone photo that wants a tighter edit in the same shape.
Other crop shapes and sizes
The same crop tool, opened on a different shape or size. Each one starts with its frame already set.
Tools that pair well with this one
All free, all in your browser, no signup.
Why use Piknova?
An honest 3:4 beats a lucky guess.
What a 3:4 cropper should do, next to the shortcuts people usually take.
Piknova
What you get- Opens upright at 3:4, the shape your phone already shot
- The dimmed edges show exactly what 3:4 costs this picture
- Runs in your browser, even on a slow connection
- Every pixel inside the frame, at Actual size
- Free, no signup, no watermark
Other tools
What you put up with- A 4:3 box lying on its side that you have to flip
- A preview too small to judge the edges
- A progress bar while the photo travels to a server
- A resized copy that loses the detail you meant to print
- A free trial that ends at the download button
Open, tighten, export
Three steps in this browser tab, no account, 25 MB per image.
- 01
Open the photo
A JPG, PNG or WebP. A 3:4 frame appears on it straight away, as large as it fits.
- 02
Tighten or slide
On a phone photo, drag a corner in to cut closer. On anything wider, slide the frame onto the subject.
- 03
Export it
Press Apply, choose half, actual or double size, and download.
Step by step
How to crop image 3:4, and when there is nothing to crop
An upright photo from most phones is already 3:4, so the frame opens around the whole of it. The crop earns its place on every other kind of picture, and on phone photos that need a tighter shot in the same shape.
- Drop the picture: Drag it onto the box at the top of this page, pick it from your files, or paste it with Ctrl+V. The 3:4 frame opens centred.
- Read the frame: If it covers everything, the photo is already 3:4. If the sides or the top and bottom go dark, that is what 3:4 costs this picture.
- Tighten it: Drag a corner inward to cut closer on the subject, then slide the frame to centre it. It stays 3:4 throughout.
- Apply and download: Press Apply and pick the export size. Actual size keeps every pixel inside the frame.
| Picture | Size | Largest 3:4 crop | Share kept |
|---|---|---|---|
| Phone photo, upright | 3024 x 4032 | 3024 x 4032 px | 100% |
| Phone photo, sideways | 4032 x 3024 | 2268 x 3024 px | 56.3% |
| Camera photo, upright | 4000 x 6000 | 4000 x 5333 px | 88.9% |
| Camera photo, sideways | 6000 x 4000 | 3000 x 4000 px | 50% |
| Full HD screenshot | 1920 x 1080 | 810 x 1080 px | 42.2% |
Frame covers the whole photo and you only wanted a smaller file? That is the image compressor's job, and it trims nothing.
3:4
the phone camera's own shape
The shape
The 3:4 aspect ratio: the shape your phone camera sees
3:4 means three units across for every four down, 0.75 to 1. Lie it on its side and it is 4:3, the shape of nearly every phone's main camera sensor.
| Pixels | Where you meet it |
|---|---|
| 768 x 1024 | Old tablet screens and slide decks, stood up |
| 1080 x 1440 | An Instagram 3:4 post and grid tile |
| 1536 x 2048 | A 9.7-inch iPad held upright |
| 3024 x 4032 | A 12 megapixel phone photo |
| 6048 x 8064 | A 48 megapixel phone photo at full size |
4:3 was the shape of television and computer monitors until widescreen took over in the 2000s. When Olympus and Kodak announced the Four Thirds camera system in 2002, the name described both its 4/3-inch sensor class and the 4:3 frame.
A lens projects a circle of light, and a squarer rectangle fits more of that circle than a long one does. So the sensor stayed 4:3 on most phones while the screens around it went wide, which is why every upright phone photo starts life at 3:4.
Further reading
Lying down
Crop to 4:3 for landscape, with no 4:3 button
4:3 is 3:4 on its side, for slides, older screens and landscape prints. The editor has no 4:3 preset, and you rarely need one.
| Picture | Pixels | Do this |
|---|---|---|
| Phone photo, sideways | 4032 x 3024 | Already 4:3: pick Original to tighten it in the same shape |
| Phone photo, upright | 3024 x 4032 | Type 3024 x 2268 |
| Camera photo, sideways | 6000 x 4000 | Type 5333 x 4000 |
| Camera photo, upright | 4000 x 6000 | Type 4000 x 3000 |
| Full HD screenshot | 1920 x 1080 | Type 1440 x 1080 |
- Move it from the middle: A typed size switches the ratio to Free, where the corners change the shape. Drag the frame by its middle to reposition it and 4:3 survives.
- Need it smaller?: Crop at the size above, then set the width in the image resizer with the ratio locked. Typing a smaller size cuts a smaller window instead of shrinking the picture.
Shops and listings
Crop product photos to 3:4 so the shop grid lines up
A shop page is a grid, and a grid only looks tidy when every photo in it shares one shape. 3:4 suits products shot on a phone because the camera already frames them that way.
- Leave air around the product: Shop themes and marketplaces trim thumbnails to their own tile shape. A little space on every side means the trim takes background, not product.
- One shape for the whole catalogue: Mixing 3:4, square and 4:5 in one listing makes the row jump in height. Pick a shape and keep it.
- Cut out first, crop second: Run the photo through the background remover, then crop the PNG. The transparent background comes through the crop untouched.
- Same size in one pass: Once every photo is 3:4, the bulk image resizer brings them to one width, and the heights match on their own.
Prints
3:4 print sizes: 6x8, 9x12, 12x16 and up
Four common print sizes are 3:4, so a phone photo prints at any of them with nothing cut off. The only question is how big it goes before it softens.
| Print (inches) | Crop at 300 PPI | From a 12 MP phone photo (3024 x 4032) |
|---|---|---|
| 6 x 8 | 1800 x 2400 px | Fits, with room to frame |
| 9 x 12 | 2700 x 3600 px | Fits, with room to frame |
| 12 x 16 | 3600 x 4800 px | Too big. The largest that fits is 3024 x 4032, about 252 pixels per inch, which few people will notice at arm's length |
| 18 x 24 | 5400 x 7200 px | Too big. The largest that fits is 3024 x 4032, about 168 pixels per inch, fine on a wall seen from across the room, soft up close |
A 12 megapixel phone photo holds a full 300 pixels per inch up to 9x12. At 12x16 it drops to about 252, which nobody spots at arm's length, and an 18x24 poster lands near 168: fine on a wall, soft under a magnifying glass.
The common 8x10 frame is 4:5, not 3:4, and a 4x6 print is 2:3. Crop to those shapes on their own pages, or the print shop's machine will make the choice for you.
3:4 crop: common questions
What people ask about the shape their phone already shoots.
Any size where the width is three quarters of the height. 1080 by 1440 for Instagram, 1536 by 2048 for a 9.7-inch iPad held upright, 3024 by 4032 straight off a 12 megapixel phone.
Only which way up it is. 3:4 is portrait, taller than wide, and 4:3 is landscape.
Plenty of people say 4:3 for both, which is why the two get mixed up in searches and settings menus.
Because the photo is already 3:4. Most phone cameras shoot that shape when you hold them upright, so there is nothing to trim until you drag a corner in.
Yes. The profile grid has shown 3:4 tiles since January 2025, and the feed takes 3:4 photos as well, so a 1080 by 1440 post shows whole in both.
A 4:5 post still works. The grid just hides a thin strip at each side of it.
Drop it in and slide the frame. An upright camera photo, 4000 by 6000, keeps 4000 by 5333, nearly all of it.
A sideways one, 6000 by 4000, keeps an upright slice of 3000 by 4000, which is half the picture, so choose the slice with care.
At full print quality, 9x12 inches. It still looks sharp at 12x16, and an 18x24 poster works if people look at it from a few steps back.
Three wide, four tall, nothing stretched.
Drop the picture, set the 3:4 frame where you want it, and download at full resolution. Free, with no signup.