Resize image to 18x24 px

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The target here is 18 × 24 px: a portrait (tall) 3:4 image of 0 megapixels. The preset fills in both dimensions for you, so you only need to add the photo and download the result.

Because the output size is fixed, the photo's own shape matters: if it is not 3:4, you either crop it or it gets distorted. The table below shows how much each common photo shape loses.

Output size	18 × 24 px
Aspect ratio	3:4 (portrait)
Total pixels	432 (0 MP)
Prints at 300 DPI	0.1 × 0.1 in (0.2 × 0.2 cm)

Fitting a photo into 18 × 24 px

Resizing to a fixed width and height only gives a clean result when the photo has the same shape as the target. A shape mismatch has two outcomes: the picture is stretched, or part of it is cropped. Crop first, then resize, so you decide what is cut. This is how much of each common photo would be lost to fill 3:4:

Starting photo	Cropped away to fill the shape
Phone photo (4000 × 3000, 4:3)	About 44% of the image
DSLR photo (6000 × 4000, 3:2)	About 50% of the image
Video frame (1920 × 1080, 16:9)	About 58% of the image
Portrait phone photo (3000 × 4000, 3:4)	Nothing: same shape

Size, quality and file weight

432 pixels saved as a JPG at web quality typically weigh about 0.04 KB to 0.13 KB, depending on how much detail the picture contains. Flat graphics and screenshots saved as PNG compress very well when colors are simple, and poorly when they contain photographic gradients.

At icon size, pixel accuracy matters more than compression. Export as PNG to keep edges sharp, and check the result at 100% zoom.

How large can it be printed?

These figures follow from the pixel count: print size = pixels ÷ DPI. Going above the 300 DPI row gives no visible benefit; going below it looks softer.

Quality	DPI	Print size
Screen-resolution draft	72	0.3 × 0.3 in (0.6 × 0.8 cm)
Acceptable for posters	150	0.1 × 0.2 in (0.3 × 0.4 cm)
Photo quality	300	0.1 × 0.1 in (0.2 × 0.2 cm)

How to resize an image to 18x24 px

Add your image. Select a photo or drag it onto the box above. JPG, PNG, WebP, AVIF, HEIC and BMP files are accepted, and the file stays on your device.
Crop to 3:4 (recommended). The output is 18 × 24 px, a 3:4 shape. Cropping to that shape first with the built-in Crop tool decides what stays in frame and avoids distortion.
Confirm the size and format. The preset fills in 18 × 24 px. Choose JPG for photos or PNG for graphics with sharp edges or transparency.
Download the resized image. Click resize and save the file. The result uses Lanczos-3 resampling, which keeps edges clean when scaling down.

Related presets

Nearby sizes in this category

More 3:4 presets

More in this category: Resize Image to Exact Pixel Dimensions. For several photos at once, use the bulk image resizer.

Frequently asked questions

How do I resize an image to 18x24 px without stretching it?▼

Crop the photo to 3:4 first (the built-in Crop tool does this), then apply the preset. If you skip the crop and your photo has a different shape, the result is either stretched or cut off. For example, a 4:3 phone photo needs about 44% of its area cropped to become 3:4.

What aspect ratio is 18 × 24?▼

3:4, portrait. It has 0 megapixels. The height is 1.33 times the width.

How big will a 18 × 24 file be?▼

As a JPG at web quality, usually between 0.04 KB and 0.13 KB; photographic PNGs are several times larger. To fit a specific limit, use one of the file-size presets after resizing, or set a target size in the editor.

What if my photo is smaller than 18 × 24?▼

Enlarging a smaller image to 18 × 24 makes it softer. For logos and icons, redraw or export from the original vector artwork when you can.

Which format should I use for 18 × 24?▼

JPG or WebP for photographs; PNG for graphics, screenshots and anything with transparency. AVIF can be smaller still, but it encodes more slowly and some older apps cannot open it.

How large can I print a 18 × 24 px image?▼

About 0.1 × 0.1 in (0.2 × 0.2 cm) at 300 DPI (photo quality) and 0.1 × 0.2 in (0.3 × 0.4 cm) at 150 DPI (acceptable for posters viewed from a distance).

Is my image uploaded anywhere?▼

No. ResizeAny decodes, resizes and re-encodes your picture inside your browser tab, so a photo you prepare for a 18 × 24 px image never leaves your device. You can confirm this in your browser's developer tools: the Network tab shows no upload request while you work.

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