How to choose different compression algorithms for exporting PDFs on PS

When exporting PDFs, the best compression algorithm depends on the specific requirements. JPEG compression is suitable for documents that mainly include images, but excessive compression ratio will reduce image quality; ZIP compression is suitable for documents that contain both images and text, balancing file size and quality; no compression is suitable for documents that require the highest fidelity, but the file size is the largest.

Choosing the appropriate compression algorithm when exporting PDF is crucial to the impact of file size and quality. This is not a trivial matter. If one is handled improperly, the file giant can be at the very least, and the image can be blurred and it can be crazy. Let’s talk about the tricks of compression algorithms when exporting PDFs on PS.

PS provides a variety of options for exporting PDFs, with compression algorithms being a key link. The most common options include: JPEG, ZIP, and no compression.

JPEG compression is for images, which discards some image data to reduce file size. The higher the compression ratio, the smaller the file, but the image quality also decreases accordingly, and the details are lost, especially at the edges of the text and fine patterns. If you export a document that focuses on images, such as a promotional poster or a product album, you can choose JPEG compression, but the compression ratio should not be too high. It is recommended to be around 80%, so that the file size and image quality can be taken into account. Remember, don’t sacrifice image quality when greedy for small files, it won’t be worth the loss! A common misunderstanding is that the higher the compression ratio, the better. In fact, it is not the case that excessively high compression ratio will lead to severe distortion of the image.

ZIP compression is compression for the entire PDF file, which compresses all data such as text, images, etc. The compression ratio is milder than JPEG, with less image quality loss, but the degree of reduction in file size is also relatively limited. If you export documents that contain both pictures and a lot of text, such as design or presentations, ZIP compression is a good choice. It effectively balances file size and quality.

Without compression options, all data is directly exported without any compression. The file size is the largest, but the image quality is also the best, suitable for professional printing or archives that require the highest fidelity. However, the file size will be very large and the transfer and storage costs will increase. Uncompression is generally not recommended unless you don't care about file size at all.

The operation steps are actually very simple: in the "Export" dialog box on PS, select "PDF" format, and you will see the compression options. After selecting the appropriate compression algorithm, click "Export". It should be noted that the PS interfaces of different versions may be slightly different, but the core operation steps are consistent.

Which compression algorithm to choose depends entirely on your specific needs. If file size is the primary consideration, you can choose JPEG compression, but the compression ratio must be controlled. If you need to take into account both file size and image quality, ZIP compression is a good choice. If you have extremely high quality requirements and don't mind the large file size, you can choose to have no compression.

For different office scenarios, I give some suggestions:

• Network transmission: JPEG compression is preferred and the compression ratio is adjusted according to the network bandwidth.
• Archive backup: It is recommended to use ZIP compression to ensure quality while controlling file size.
• Professional printing: Choose no compression to ensure the best printing effect.

Remember, choosing a compression algorithm is a trade-off process. There is no absolute best solution, only the most suitable solution. Depending on your actual situation, carefully weigh file size and image quality and make the best choice. Don’t forget to try it a few more times to find the best method for you!

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