What if there is a white edge in PS export JPG format

Today, I will talk to you about how to export PS JPG format with white edges. Many people may not know much about it. In order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article.

PS export JPG format has a white edge, because the output image does not have a channel, so the transparent position is to show white.

Solution method

You only need to output images with channel format, such as PNG and PSD, and the white edges will become transparent after saving.

The difference between JPG and PNG

JPG (1992): a distortion compression standard method used, 24 bit true color, richer than GIF, does not support animation, does not support transparent colors. The compression method of JPEG is usually destructive data compression (lossy compression), which means that the quality of the image will suffer visible damage during the compression process. After a picture has been uploaded and downloaded many times, the picture will gradually become distorted.

Advantages

JPEG/JFIF is the most common format used to store and transmit photos on the World Wide Web. JPEG works best on photos with smooth tonal and color changes or on realistic painting (painting). In this case, it is usually better than the completely lossless method and can still produce very good-looking images (in fact, it will produce higher-quality images than other general methods such as GIF, because GIF is lossless for line painting (drawing) and graphic graphics, but it is extremely difficult to quantify for full-color images).

Shortcoming

It is not suitable for line drawing (drawing) and other text or iconic graphics, because its compression method is used in the type of these graphics and will get inappropriate results.

PNG (1996): format is lossless data compression, PNG format has 8-bit, 24-bit, 32-bit three forms, of which 8-bit PNG supports two different forms of transparency (indexed transparency and alpha transparency), 24-bit PNG does not support transparency, 32-bit PNG adds 8-bit transparent channel (32-24x8) based on 24-bit, so it can show 256 levels of transparency.

Advantages

* 256-tone swatch technology is supported to produce small files

* supports up to 48-bit true color images and 16-bit grayscale images.

* the translucency of Alpha channel is supported.

* gamma correction information for image brightness is supported.

* additional text information can be stored to retain image name, author, copyright, creation time, comments and other information.

* use lossless compression.

* Asymptotic display and streaming read and write are suitable for quickly displaying the preview effect in network transmission and then showing the full picture.

* use CRC cyclic redundancy coding to prevent file errors.

* the latest PNG standard allows multiple images to be stored in a single file.

Shortcoming

But there are also some software that cannot use appropriate predictions, resulting in overly bloated PNG files.

After reading the above, do you have any further understanding of how to export PS JPG format with white edges? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.