Use online image compacting tools such as TinyPNG or Compres

3, store the image in smaller file formats, such as JPEG or PNG.

how to reduce the size of the image?

setting method:

1, select the image;

0 2, click the image tool formatting tab right below the button as shown in the picture;

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2 3, pop up the small dialog box, remove the locking vertical ratio and the parallel before the original size of the image; in height and width
Enter the corresponding height and width value of the page, A4 paper, 29.7 cm high, 21 cm wide, as shown in the figure.

How to easily reduce the image file size

There are two ways:

method one,

1, if your image format is PNG format and the image quality requirements are not high, you can use the following method to compress the image size.

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1 2, right-click the file option, open the PNG image file with the system's own dashboard functionality.

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If you want to save the image, then click the button shown in the picture to set up, save the file from the new. Select "Save as".

4 and then we will save the format selected as "JPEG image", of course according to your needs, other styles can also, but I think JPEG will not make the quality of the image too much loss, and occupy a small space, undoubtedly the best way.

5, finally fill in the name, save it, we will find the image space is much smaller than before. It was 9.01MB, and suddenly turned into 1.90MB.

This method is for images that are already in the JPEG format, can also further reduce the space it occupies, that is, with compression software, our computers generally have, if you can not install first, look good, the image size is 1.90MB

2, then right-click open the file selection list, select "Add to the compression folder

3, then select the compression method, and confirm.

4, wait for the compression software to complete, finally, compare the source file and the compression file, you will find the effect is not just obvious, but
It is also very good.

Image Compression is the application of data compression technology on digital images, its purpose is to reduce the redundancy of information in image data so that the data is stored and transmitted in a more efficient format. The reason image data can be compressed is because there is redundancy in the data. Image data redundancy is mainly represented by the space redundancy caused by the correlation between neighbouring pixels in the image; the time redundancy caused by the correlation between different frames in the image sequence; the correlation caused by the spectrum redundancy of different color planes or spectrum bands.
Small image file size, the specific method is as follows:

Open image: First, open the image needs to shrink the file size on the computer. This can be opened by double-clicking on the image file or using the image view software.

use QQ screening function:

0 make sure you have logged in to your QQ account and open the QQ chat window (even if it is not sent to anyone, you need a chat window to activate the screening function).

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2 in Q
In the Q chat window, find and click the clip button (usually an icon in the shape of a knife) or use the shortcutCtrl+Alt+A (the default shortcut, which may vary depending on the QQ version or personal settings) to activate the clip function.

Use the mouse box to select the part of the image that needs to be retained. If you need to keep the whole picture, you can start from the corner of the picture, drag the mouse to the corner, the box to select the entire image area.

In the clip toolbar, you can choose to edit simply, such as adding text, arrows, and so on.
It is not necessary, only for cases where marking or description is required).

In the JPEG format, there is usually a "quality" or "compression level" slider, by adjusting this slider, you can further control the file size. Moving the slider to the left will reduce the quality and reduce the file size, moving to the right will improve the quality but increase the file size. In order to shrink the file size, the slider should be moved to the left properly.

Q Scraping Tool reduces file size by re-sampling and compressing image data. When using the Scraping function box, it is actually creating a new, smaller image file. Select the JPEG format and adjust the compression quality, you can further control the file size. JPEG format uses a damaged compression algorithm to reduce file size by removing information that is less sensitive to human vision in the image.

Note:

The image quality after scraping and saving may be slightly lower than the original image, especially in the case of high compression.
When adjusting the compression quality, you need to weigh the file size and image quality. If the original image is very large, or if you need to further reduce the file size, you can consider using professional image editing software (such as Photoshop) or online image compression tools to make more subtle adjustments.

Other simple ways to add:

Using the system's home tool:

Windows system: You can use the "Picture" tool to open the image and change the pixel scale of the image by "re-adjusting" function.
Inch, then stored in JPEG format.

Mac system: You can use the "Preview" app to open the image, change the size of the image through the "Adjust Size" option in the "Tools" menu, and export the compressed JPEG format.

use the online image compression tool :

there are many free online image compression services (such as TinyPNG, CompressJPEG, etc.), these tools usually provide a simple upload-compress-download process without the need to install any software.

after uploading the image,
The tool automatically applies optimization algorithms to reduce file size while trying to keep the image quality as good as possible.

Use mobile phone APP:

If you need to shrink the image file size on your phone, you can use a variety of image editing or compression apps (such as "image compression master", "picture show", etc.).

These apps usually provide an intuitive interface and simple operation, can quickly adjust image size and compression quality.