The pictures on and off the Internet are blurred after being enlarged? Or are old photos of low resolution that want to be printed but worry about the effect is not good? Our traditional stretching and enlarging can only make the picture more blurred. If we cut it, we can only enlarge a small part of the whole picture, and cannot change the pixels of JPG and PNG pictures. In addition, there are hundreds or thousands of pictures with low resolution. We can't find a way to enlarge them. Even if we find them, we have to deal with them one by one. In this way, we will spend the whole day or even the next few days. Don't you waste the time to enlarge the resolution of the picture?
Fortunately, today's technological development is very powerful. Here are a few practical tools and methods to effectively improve the resolution and clarity of the picture, so that the picture with smaller resolution can be enlarged and the details of the picture can be highlighted.
When to enlarge the resolution and pixels of JPG, PNG and other image formats?
Pictures to be used for large size display
the resolution of the picture files we save on the Internet is relatively low, such as 200x 200 or 400x 300 small pictures. If we directly transfer the pictures of this size to the mobile phone, insert PPT or print them out, they will become very small and look unclear. At this time, we need to improve the resolution, and it will be better to enlarge the visual effect after demonstration or printing.
Neat layout required during design
in typesetting and design, even if the pictures themselves do not need to be particularly clear, in order to make the typesetting consistent, the sizes of the pictures need to be unified, and a group of pictures need to be displayed in the same row. However, if one of them is particularly small, the resolution must be enlarged to match the sizes of other pictures, so that there will be no large and small cases, and the layout will be neat visually.
Minimum size required for upload platform
some systems and platforms will have a minimum size limit when uploading pictures. If the original picture is a small picture, even if the content is complete and the size is not up to standard, we can improve the resolution or pixel points to make the picture meet the requirements of the platform. Although enlargement will not make the picture quality higher, at least it can be successfully uploaded and approved to meet the basic specification requirements of the system.
Preview the effect of batch enlargement of JPG, PNG and other picture sizes
before treatment:
after treatment:
method 1: Use HeSoft Doc Batch Tool Batch enlarge the resolution of small pictures
recommended Index:★★★★★
Advantages:
- hundreds or thousands of pictures can be easily enlarged without enlarging one by one, and it also supports reducing pictures, adjusting picture rotation angle, transparency, brightness, contrast, etc.
- Will not ask to upload pictures, processing pictures are processed in the local computer, pay attention to the user's privacy and security.
Disadvantages:
- only software can be installed in the computer.
Operation steps:
1. Open 【 HeSoft Doc Batch Tool ], select [Picture Tools]-[Picture Effect Enhancement]].
2. Select a method in [Add File] or [Import File from Folder] to add the picture to be enlarged, or drag the picture directly into the addition, and then click Next.
3. Enter the setting option page and open the [Zoom In or Zoom Out] button. The slider below can be dragged left and right to support zoom in and zoom out. Finally, click Next to save the interface, click Browse, and select the saved location of the enlarged picture.
4. After waiting for the processing to end, click on the red path and open the folder to view the successfully enlarged picture.
Method 2: Use Bigjpg magnification tool to enlarge the size of JPG and PNG images
recommended Index:★★★☆ ☆
advantages:
- without installing any software, open the browser and have a network can be used.
- Support a variety of formats, and there are AI can only add pixels, amplification quality and effect is excellent.
Disadvantages:
- you need to upload images to the server. It is not recommended to use sensitive image files.
- High quality amplification may have some limitations.
Operation steps:
1. Open the browser to visit Bigjpg official website, click to select an image or drag the image to the upload area. ,
2. Here you can choose the magnification, which is 2x, 4x, 8x and 16x respectively, and choose a suitable option.
3. Click Start, and then wait for processing to save the high-definition large image.
Method 3: Use the computer's own drawing tool to batch enlarge the pixels of JPG and PNG pictures
recommended Index:★★★☆ ☆
advantages:
- completely free, you can use it without networking, and all operations are processed locally and offline.
- The operation is simple and easy to understand, and the picture effect and quality are visually displayed.
Disadvantages:
- the most basic algorithm used, the quality of the enlarged picture will be blurred.
- Only suitable for small picture size enlargement.
Operation steps:
1. Right-click the picture file and use the drawing tool to open it.
2. Select Resize on the Home tab, and then select Pixel Mode in the pop-up window.
3. Enter larger values horizontally and vertically as needed (for example, 320x 240 here, we changed it to 960x 720).
4. Finally, click OK, and the picture will be enlarged immediately, but if it is enlarged forcibly, the picture quality will be obviously lost, and then it can be saved.
