The Best Ways to Compress an Image Without Losing Quality Online


When placing high-quality photos, difficulties with the site operation may arise. High-quality but heavy photos affect its loading. To avoid problems, you should resize the image. To achieve this, there are convenient tools that help compress images without losing their quality.

You must compress an image without losing quality if you want to send many photos by e-mail. It can take a long time if you send quality images with a lot of weight. In this case, the sender and recipient suffer. The latter has to wait a long time for the pictures to be uploaded to the device. 

In this article, we will talk about how to reduce the size of a photo without losing quality online. And let’s discuss the most proven ways to compress images.

When You Need to Resize an Image Without Losing Quality

Most often, image compression is required in the following cases:

    • It is necessary to accelerate the speed of loading pages as much as possible. At the same time, the multimedia content on the site must retain its quality.
    • You must free up space on your smartphone, tablet, or laptop. Pictures retain their quality but, at the same time, take up 80% less memory in the device;
  • You must quickly upload pictures to social networks or send them by e-mail.

Compressing pictures for posting on a website or sending them by mail is normal. With the right approach, the quality of the photo will not suffer at all.

Image resolution is the number of pixels that are in a particular area of ​​the photo. The more PPI, the heavier the weight of the image. On average, one-pixel accounts for about 3 bytes of memory. You can calculate the approximate weight of the image yourself. To achieve this, you can multiply the resolution indicators.

Resolution indicates the maximum scaling at which the picture will retain its quality. Image weight – the number of megabytes that a particular photo has.

You can tell a lot about a photo from the weight of a shot. If you received an A4 image with a size of 2 megabytes or more, you have a picture of good quality. The main disadvantage of high-resolution images is that they take a very long time to load.

How to Solve the Problem with High-quality but Heavy Photos

There are different ways to edit photos. If you have high-quality images that you want to publish on the site or send via email, please select one of the options:

    1. Image compression. In the process, it is possible to reduce the weight of the photo significantly. But the quality suffers. Compression can affect colors, small details, etc. Reduction changes resolution and clarity.
    2. Reducing the number of pixels. The picture becomes blurry. Such processing involves combining several surrounding pixels into one. Too much merging will cause small details to disappear from the image simp.
  • Removing unnecessary information. The best way to reduce the size without losing image quality. Most often, metadata is removed. This not only reduces the size but also ensures the safety of personal data. A digital camera most typically writes metadata while creating a photograph.

Ways to Change the Weight of the Picture

You can resize photos without losing quality in graphic editors or using special online services.

How to reduce the weight of a picture in a graphic editor

Weight reduction in graphic editors can be carried out in several modes:

  • Bilinear. Processing up to 4 minutes. Cons – the image fades, small details are lost;
  • Bicubic. Processing up to 8 minutes. The most optimal compression option without quality loss. Minus – long processing time.

Bilinear and bicubic processing use basic scaling systems. 

Сompress an image without losing quality using online services

A significant advantage of this method is that you do not need to download any software on your computer. You can quickly resize it on any device, no matter how powerful. The service can also be used on mobile devices.

There are many such services. Many of them work on a similar principle:

  1. The user goes to the Compress tool and uploads one or more photos to be processed.
  2. Selects the compression quality. As a rule, several options are available here – better quality, smaller size, and specific parameters.
  3. Downloads the processed image to your device.

If the photos are stored on your smartphone, you do not need to transfer them to your computer to resize them. Services have an adapted mobile version. You can go to the site and immediately upload pictures for processing from your phone.


Compressing images without loss of quality may be required in various situations. The most convenient way to process photos without losing quality is to use online services. Such sites are accessible literally from any device. Another advantage of online services is the minimal use of computer or smartphone resources. Processing can be done even on weak devices.



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