Image to PDF Conversion: Optimize File Size

Curtis Chau

Updated: April 22, 2026

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  # Image to PDF Conversion: Optimize File Size When converting large or high-resolution images to PDF, the resulting file size can be quite large. In order to reduce the size of the final PDF, we suggest: 1. Reducing the size of the initial image where possible. 2. Reducing the DPI (dots per inch) / resolution of the image prior to conversion. Image DPI can often be reduced to somewhere around 90 without posing any adverse effects on visuals in the resulting PDF. Visit the article '[How to Convert Images to a PDF](/how-to/image-to-pdf/)' to learn more about converting images to PDF.

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When converting large or high-resolution images to PDF, the resulting file size can be quite large.

In order to reduce the size of the final PDF, we suggest:

1. Reducing the size of the initial image where possible.
2. Reducing the DPI (dots per inch) / resolution of the image prior to conversion.

Image DPI can often be reduced to somewhere around 90 without posing any adverse effects on visuals in the resulting PDF.

Visit the article 'How to Convert Images to a PDF' to learn more about converting images to PDF.

Curtis Chau

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Technical Writer

Curtis Chau holds a Bachelor’s degree in Computer Science (Carleton University) and specializes in front-end development with expertise in Node.js, TypeScript, JavaScript, and React. Passionate about crafting intuitive and aesthetically pleasing user interfaces, Curtis enjoys working with modern frameworks and creating well-structured, visually appealing manuals.

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