Image Size Changer (Increase or Decrease KB & Pixels) Online

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Increase or decrease a photo's file size in KB or MB and set its exact width and height in pixels, all in one place. Pick a target size from 100 KB up to 50 MB and the tool works out whether to compress or enlarge the file.

The interactive Image Size Changer (Increase or Decrease KB & Pixels) workspace loads in your browser. Read the practical guide and processing details below.

How to Use Image Size Changer (Increase or Decrease KB & Pixels)

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

Upload your image

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

Set pixels and target size

Enter the width and height in pixels, then pick a target file size such as 200 KB or 5 MB.

Change size and download

Click Change Image Size, check the new size, then download the file.

Key Features & Capabilities

One tool for KB and MB, increase or decrease

Set exact width and height in pixels

Aspect ratio lock to avoid stretching

Targets from 100 KB up to 50 MB

JPG, PNG or WEBP output

Runs in your browser, so the image is not uploaded to a server.

When to use Image Size Changer (Increase or Decrease KB & Pixels)

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

Check the settings against your intended output before processing.

Use Image Size Changer (Increase or Decrease KB & Pixels) 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

Review the downloaded result and keep your original file.

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.

ToolBexa guides & updates Read a related practical guide Privacy details Report a tool issue

Frequently Asked Questions

Can I increase the file size without losing quality?

The picture is re-encoded at high quality first. If the file is still smaller than your target, the remaining bytes are filled with invisible metadata, which does not change the picture. For more real detail, increase the pixel size.

Can I decrease the file size?

Yes. The tool lowers JPEG quality until the file fits your target. If quality alone is not enough, it reduces the pixel size slightly.

Is my photo uploaded?

No. Resizing and compression happen in your browser.

Make an image bigger in pixels with smooth scaling

Free online tool

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