We can download Hi-format PDF converter to convert files in various formats, including, of course, converting photos into PDF format. First, we double-click to open the converter and click to select "File to PDF".
Method 2: Online transformation method.
Open the PDF online tool in Hi format, and click jpg to PDF on the online conversion page. Enter the add file conversion interface. After selecting a file, click Start Conversion to realize the function of converting photos into PDF files.
Method 3: Use Word software.
First, open the Word editing software, we create a new blank Word document, and then insert all the pictures into this Word document for typesetting. Then choose File-Save As-Export as PDF.
JPEG (Joint Photographic Experts Group) is the standard of continuous tone still image compression. The file suffix is. . Jpg or. Jpeg, which is the most commonly used image file format.
Predictive coding (DPCM), discrete cosine transform (DCT) and entropy coding are mainly used to remove redundant images and color data, which is a lossy compression format. It can compress the image in a very small storage space, which will destroy the image data to a certain extent.
Especially, using too high compression ratio will reduce the quality of the restored image after final decompression. If you pursue high-quality images, you should not use too high compression ratio.