How to Resize an Image to 5 x 7 cm Without Stretching It

A 5 × 7 cm image is meant to print about 5 cm wide and 7 cm high. Rounding and printer behavior can shift the result slightly. Getting close takes more than making the picture look about right on a screen: you also need to choose a pixel resolution and decide how the image should fit the requested shape.

This guide uses 5 × 7 cm as an example of a physical size. It is not a passport or visa specification. If someone has given you an image requirement, check their current instructions for dimensions, file format, resolution and framing.

Why the preview is not a ruler

A preview helps you judge the composition: what is visible, where the subject sits and whether important details are too close to an edge. It does not show the physical print size.

The same image can appear larger on one screen than another, and a browser can scale the preview to fit the available space. To prepare a file for a physical size, enter the dimensions and resolution explicitly. If you need a paper copy, check the print settings too.

Set the size and resolution first

Start with a copy of your original image. Keeping the original gives you a way back if you crop too tightly or need a different version later.

Open Resize Image in CM and choose your image. Select cm, enter 5 for width and 7 for height, then choose a DPI value. DPI means dots per inch. Here it sets how many pixels the chosen physical size needs.

The calculation converts centimeters to inches, multiplies by DPI and rounds to whole pixels. For example:

Size DPI Approximate pixel dimensions
5 × 7 cm 300 591 × 827 px
5 × 7 cm 150 295 × 413 px

A higher DPI creates a larger pixel grid for the same physical dimensions. It cannot recover detail that was missing from a small or blurry original.

Check the original-proportions lock as you enter the dimensions. When it is enabled, changing one dimension also changes the other. If both 5 cm and 7 cm must be fixed and your source has a different shape, check that control so you can enter both values, then choose how the image fits.

Choose how the image fits the shape

Once the dimensions and DPI are set, look at the composition. A square image, for example, has a different shape from a 5 × 7 cm rectangle. Each fitting mode handles that difference in its own way.

Keep whole image preserves the entire picture. It is the default mode and adds white margins when the image and target shapes differ. Choose it when every part of the original needs to remain visible. Make sure the margins work for your intended use.

Crop to fill fills the 5 × 7 cm frame without stretching the picture. Some content at the edges will be removed. Use the positioning and zoom controls to decide what stays inside the frame, and check all four edges before downloading.

Stretch forces the image into the chosen dimensions by changing its proportions. A face may look wider or narrower, and a circle may become an oval. Avoid this mode when the original proportions matter.

None of these modes guarantees that a recipient will accept the image. A requirement may specify what must be visible or whether margins are allowed, so check those details separately.

Check the downloaded file

Download the result, then open the actual downloaded copy rather than relying only on the preview. Check the framing, look for unwanted margins or missing edges, and confirm the pixel dimensions and selected density in an image viewer or file-properties panel that displays them.

The tool’s JPG and PNG outputs carry the selected DPI. Because pixel dimensions are rounded to whole numbers, their calculated physical size can differ slightly from the entered size. The PDF option uses a page with the requested dimensions.

If the result isn't right, go back to the original file and adjust the fit or settings. Also check the recipient’s current requirements before sending it.

Print at the intended size

If you need a physical print, a PDF with the requested page size can make the dimensions easier to manage. In the print dialog, choose Actual size or 100% and turn off Fit to page or similar scaling options. Choose paper that can accommodate the 5 × 7 cm page and your printer’s margins.

Printer behavior varies, so these settings are a starting point rather than a guarantee of a particular measurement on paper. If the physical size matters, measure the finished print with a ruler.

Disclosure: GPT-6.1 Terra generated the initial draft for Yan Wang / LensUp, and an independent AI editor revised it. Tool instructions were checked against the live English tool and formal implementation on October 27, 2026. The numerical examples were checked separately by an AI agent; they are synthetic calculations, not new image conversions, phone or printer tests, recipient acceptance tests, or personally performed checks by the human account owner.

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