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Image Resizer (KB, DPI, px, cm, inch) Online

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One image resizer for everything: set width and height in pixels, cm, mm or inches, choose the DPI, and reduce or increase the file size to a target in KB or MB. Download as JPG, PNG or WebP.

The interactive Image Resizer (KB, DPI, px, cm, inch) workspace loads in your browser. Read the practical guide and processing details below.

How to Use Image Resizer (KB, DPI, px, cm, inch)

Follow these steps, then review your result before using or sharing it.

1

Upload your image

Choose a JPG, PNG or WEBP photo from your device.

2

Set size, DPI and file size

Pick a unit, enter width and height, choose the DPI, and optionally set a target file size in KB or MB.

3

Resize and download

Click Resize image, check the pixel size, DPI and file size shown, then download.

Key Features & Capabilities

Width and height in px, cm, mm or inch
DPI from 72 to 600 saved in the file
Reduce or increase file size to a KB or MB target
Aspect ratio lock
JPG, PNG or WebP output
Runs in your browser, so the image is not uploaded to a server.

When to use Image Resizer (KB, DPI, px, cm, inch)

Resize a photo to the exact pixel, cm or inch size and file size an application form, print shop or website asks for.

The best image settings depend on where the picture will be used. Pixel dimensions describe width and height; file size describes bytes. Changing one does not guarantee a particular value for the other. Keep the original, compare the result at its intended size, and choose a format accepted by the destination.

Get a more useful result

Pick the unit, enter the width and height, set the DPI the receiving party requires and, if needed, a target size such as 100 KB. Check the result summary before downloading.

Use Image Resizer (KB, DPI, px, cm, inch) on ToolBexa as one step in your workflow, then inspect the exported result before uploading or sharing it. If a receiving website gives a format, dimension or input rule, use that requirement rather than a convenient default.

Limits and common mistakes

DPI is print metadata and does not sharpen a picture. A very small target size lowers quality, and enlarging pixels cannot add detail that the original photo lacks.

How your input is processed

The core operation runs in your browser. Downloaded results remain on your device, and page preferences may be saved in browser storage. Check the Privacy Policy for server logs, external resources and other site features.

Frequently Asked Questions

How are cm and inch converted to pixels?

Pixels = inches x DPI, and 1 inch is 2.54 cm. For example 3.5 x 4.5 cm at 300 DPI is about 413 x 531 px.

How do I resize a photo to 20 KB, 50 KB or 100 KB?

Upload the photo, choose Set target, tap the KB preset you need and click Resize image. The tool lowers JPEG quality until the file fits, and reduces pixels slightly only if quality alone is not enough.

How do I make an image 300 DPI?

Pick 300 in the DPI box and resize. The DPI is written into the JPG or PNG file. In cm or inch mode, the pixel size is recalculated so the print size stays the same.

Does DPI change how sharp the image looks?

DPI is print-size metadata. On screen, only the pixel size matters. DPI tells a printer how large to print those pixels.

Can I increase file size without quality loss?

The picture is saved at high quality first. Any remaining bytes are added as invisible metadata, so detail is not added. For real detail, raise the pixel size.

Which size should I use for a passport or exam photo?

Follow the form: for example 3.5 x 4.5 cm (413 x 531 px at 300 DPI) with a size limit such as 50 KB. Always check the exact rule on the receiving website.

Is my image uploaded?

No. Everything runs in your browser, so your photo stays on your device.

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