Reduce Image Size

Our image resizer can reduce image size up to 5MB or change its dimensions without losing quality. Images with decreased size are easier to store, upload or share on digital platforms.

Resize Method Width Height Other

How to reduce image size

upload photo or image

1. Select bitmap image

Upload your bitmap images or photos in JPG, PNG, BMP, or GIF file format through the first input field.
resize image

2. Resize image

Choose the right method for resizing an image. You can change the width or height of the image, or decrease its size by a certain percentage.
download resized image

3. Download processed image

Click on the red resize button, wait a couple of seconds (don't leave the website) and download your resized image.
resize image

Maximum file size

You can resize images up to 5MB. For resizing larger images check this link.

Resizer ➞
convert image

Get help

If you have any problems with image resizing, send us a message.

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Advantages of Image Resizer

no installation

No installation

There is not necessary to install any software on your device. You only need an internet browser.

phones and tablets

Phones and tablets

Anyone using an iPhone, tablet, or smartphone with android OS can resize their image on this website.

free image resizer

Free image resizer

We offer a free image resizer for images and photos under 5 megabytes.

no limitation

No limitation

You can resize an unlimited number of images for free. Try our online tool.

Explanation of image size and resolution

Bitmap images and photos are made up of pixels. Pixel is the basic unit of an image and its stores color information.

Image size - is the value represented by dimensions (width, height). Dimensions can be measured in pixels, points, millimeters, or inches.

Image resolution - is measured in pixels PPI (pixel per inch) or inches DPI (dot per inch). The higher the number of pixels per inch, the greater the resolution and image quality.

File size - of the image is measured in kilobytes, megabytes, or gigabytes. Images with higher resolution, image size, or bit depth are more detailed and takes more disk space. This is because they include more pixels in smaller images.

How can you decrease image file size?

There are two ways how to reduce image size. Either you can compress the image, or lower its dimensions (width, height).

Compressed image files are less detailed with a decreased amount of pixels per inch. Images with lowered dimensions can maintain their good image quality but it will be harder for you to use these images for print.

The common downside of reducing the size of bitmap graphics is that images or photos will lose quality. They can often look blurry, less sharp, or small.

How can you decrease image file size
reduce image size

Why do reduce image size?

Photos taken from modern smartphone cameras have tens of megapixels and take a lot of disk space. This can be quite a headache if you don’t have a lot of free disk space on your HDD or memory card. Emails are too often limited in terms of attachment sizes. Because of this reducing image size is a good idea. In a lot of cases decreasing image size or resolution doesn't noticeably change the image quality. The photo still looks good even with 72 dpi or if its width and height are a bit decreased.

How is the image size calculated?

Calculating the size of a bitmap image is relatively simple. You have to multiply the width and height of the image and its color depth. Then divide the obtained value by the number 8.

Size in bytes = width x height x color depth / 8

This free online tool offers following image resizing methods

Fixed Width

The width is changed and height is automatically resized

Fixed Height

The height is changed and width is automatically resized


Width and height of the image is adjusted for the new dimensions.


The image is stretched based on the entered dimensions without keeping the same ratio


The image is scaled to the set dimensions. Any areas that are not taken are filled with the color that you can choose


The image size is decreased by chosen percentage

Most common image sizes

People nowadays using digital devices and the internet are often asked to supply images and photos in a specific size. Whenever they want to print photos, change desktop wallpaper or update their social media thumbnails, covers, banner, or posts, images have to have required dimensions. Elsewhere they will look weirdly stretched and blurry.

Video: 1280x720px, 1920x1080px, 1440x1080px | Facebook: 180x180px, 1200x630px, 820x312px | Twitter: 400x400px, 1500x500px, 900x450px | Instagram: 1080x1080px, 1080x1350px, 1080x608px | Youtube: 800x800px, 2560x1440px, 1280x720px | Wallpaper 2K, 4k, 5k, 8k: 2048x1080px, 3840x2160px, 5120x2160px, 7680x4320px | Google: 300x600px, 728x90px, 336x280px, 300x250px | Print: 297 x 420mm, 210 x 297mm, 148 x 210mm

Example of the image with decreased size

Our online tool will help you reduce image size. Review samples down bellow to see the minimal drop of quality of exported images by our smart app. Get jpg, png, gif, and bmp images with decreased file size.

original image


500x300px / 265KB

image with reduced size


250x150px / 13KB (95% less!)