What is an image file size?
Images are composed by several dots called pixels, and each of them has a color, represented as a combination of three basic colors (red, green and blue). To store each of these pixels, 3 bytes (24 ones or zeros) are generally used. When an image is large, it may have millions of pixels, and that means storing all information for an image like that in a computer or any device will take millions of bytes.
Convert an image to JPG, PNG, WEBP, TIFF or GIF format. Compress JPG, PNG, GIF images without losing quality. Mirror an image online horizontally or vertically. Rotate an image by 90, 180, 270 degrees or any angle. Reduce Image Size. Find rebate stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection. Thousands of new, high-quality pictures added every day.
When a camera or cellphone says it takes 10 megapixels photos, it means that each photo has 10 million pixels (mega = million). And having 10 million pixels means it takes 30 million bytes (or 30 megabytes) to store that photo (which is a lot of space!). If you want to send this photo (or many photos) to a friend by e-mail, it will have to transfer 30 megabytes of data and it will take a while to upload it and a lot for the recipient to download it later.
How can I reduce image file size?
Is there any solution? Yes, there are two main solutions. One of them is compressing the image: compression reduces file size without having to resize the image, but image quality will suffer as you increase compression and start losing more image data.
The other solution is to resize your photo, decreasing the number of pixels it takes to store the image, which reduces it's file size proportionally. Reducing image size doesn't reduce image quality, although it may lose some very small details if they become too small.
Photos taken using modern cellphones and cameras usually have over 6 million pixels, while most cellphones, tablets, notebook or TV screens have only about 1.5 million pixels, which means you end up seeing a resized version of the image (you only use the full image if you print it). So if you resize your image, decreasing its width and height to a half, your image would have about the same number of pixels than the screens that will display it, so you wouldn't be losing any quality or detail at all, even looking at your image in full screen mode.
So remember, if you have a huge photo, you can reduce its file size by resizing it until it's about 1900 by 1100 pixels, and getting a JPG image with just a little compression (about 95% quality). Doing so, you will get a versatile image with great quality, that you can send to anyone without taking too much time, or spending too much bandwidth on your mobile data plan.
50KB (84% less!)
Reduce images is an online tool that allows you to apply both compression and size reduction online to any image, and save the resulting images in different image formats like JPG, PNG, GIF or BMP.
Image Reducer App
Resize your image online in three simple steps:
Image Reducer Png
- Use the top left button to select and upload your picture. Resize Your Image supports different extensions as .jpg, .gif, .png, .tiff, .pdf, .raw, .txt etc.. Since you resize the image online and the website depends on the speed of your internet connection, the upload time can be variable. Be patient if it lasts!
- Use the buttons and arrows to set the size of your image online. Height and Width show you the actual height and width of the cropped area, Press button to set height and width manually. Use the arrows to crop the area. Height and witdh are shown in the buttons above.
- Press the orange button to resize your image. This will bring you to the download page where you will find your new image!
Image Redactor
Resize Your Image is a magnificent tool (image and photo resizer) to help you maintain your website, to send images via email or to resize large images to print it. Not only does it let you determine its size (in pixels), it also brings down the size of your file.