Images to PDF via CLI

Pack JPEG and PNG into one PDF with img2pdf, without recompression.

Packages to install

The img2pdf package embeds images into PDF as-is, without re-encoding them as JPEG.

img2pdf

sudo apt-get update
sudo apt-get install -y img2pdf

How to run the command

List images in page order and pass -o output.pdf. Command-line order becomes page order.

img2pdf photo.jpg -o album.pdf

Dockerfile example

Build a minimal Ubuntu image with the required packages and run the conversion inside the container.

FROM ubuntu:24.04

RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        img2pdf && \
    rm -rf /var/lib/apt/lists/*

WORKDIR /work

docker build -t images-to-pdf .
docker run --rm -v "$PWD:/work" -w /work images-to-pdf \
  img2pdf photo.jpg -o album.pdf

Example commands

Run these locally after installing the packages, or inside the container from the Dockerfile.

img2pdf photo.jpg -o album.pdf

img2pdf page1.png page2.jpg page3.png -o album.pdf