Converting between images and PDFs is common: from jpg to pdf for receipts and scans, to pdf to jpg when you need a picture for a slide or web. This guide covers both directions.
JPG to PDF and PNG to PDF
A jpg to pdf converter (or png to pdf) turns image files into a PDF. Most tools let you add multiple images, set page size (letter, A4), and control quality and file size.
Use jpg to pdf for receipts, ID scans, or photos in one document. Use png to pdf when you need transparency or higher quality for graphics. Add images in the order you want.
PDF to JPG and PDF to PNG
Going the other way, pdf to jpg or pdf to png extracts pages or images from a PDF as raster files. Use pdf to jpg for smaller file size and broad compatibility. Use pdf to png when you need transparency or want to avoid JPEG artifacts in sharp graphics.
Quality and resolution
For pdf to jpg or pdf to png, set the output DPI. Higher DPI means larger files and sharper images. 150 DPI is fine for screen; 300 DPI for print.
Online vs desktop
An online jpg to pdf converter is convenient for quick jobs. For batches, large files, or sensitive documents, a desktop tool keeps everything local and often works faster.