
Removed PDF PPI setting which is confusing to most people.Use image's actual width and height regardless of image resolution (pixels per inch).This is a compromised method to prevent OOM (Out Of Memory) error on server. For example: the maximum PDF page size will be 5328 by 5328 units when there are 5 image files. However, the maximum page size will start to decrease when file number starts to increase. Increased maximum PDF page size to 14400 by 14400 units (200 by 200 inches).

These image formats will be automatically converted to JPG format after uploading.

Use image size as PDF page size by default. The image in output PDF is exactly the same image before conversion. It simply adds images to PDF without any optimizing or shrinking. The third option uses the best open-source conversion engine we have found online.

The output PDF file's file size is not optimized. It supports more image formats such as animated GIF or multi-page TIFF. The second option uses our exclusive conversion engine designed for only this website. The output PDF file's file size is optimized. The first option uses the same conversion engine that our JPG to PDF Converter app for Android uses. Usually you can skip this step and use default settings. No limit on file count, each image file size can be up to 40 mb. You can add multiple image files and batch upload them to online server. Other image formats (such as SVG, AVIF, HEIC, WEBP or JXR) will be automatically converted to JPG after uploading. It supports JPG, PNG, GIF, BMP and TIFF image formats directly. Drag-and-drop or click to add image files.
