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How to Make a PDF From Images Smaller (Under 1 MB or 2 MB)

Practical ways to reduce the size of a PDF made from photos so it fits email and upload limits.

Updated 21 October 2026

Many email services and online forms limit uploads to a few megabytes. A PDF made from phone photos can easily be bigger than that, but a few changes usually fix it. The tips below are ordered from quickest to most effort.

Use the Small file quality

In the image to PDF converter, set Quality to Small file. Images are saved at a lower JPEG quality and limited to 1600 pixels on the long edge, which cuts the size sharply while keeping text on documents readable.

Try Balanced first

The converter shows the finished size after each conversion. Start with Balanced, and only drop to Small file if the PDF is still too large. There is no exact size target, so check the number and adjust.

What each quality setting does

High: long edge up to 4000 pixels, high JPEG quality. Best for printing.
Balanced: long edge up to 2400 pixels, medium-high quality. Good for most forms and email.
Small file: long edge up to 1600 pixels, lower quality. Best for strict upload limits.

Do the maths per page

The file size is roughly the sum of the pages. If a portal allows 2 MB and your PDF has five pages, you have about 400 KB per page to work with. Fewer pages or smaller images both help. Check the size after each try instead of guessing.

Crop and remove what you do not need

Crop away tables, floors and empty margins before converting, and leave out duplicate or blurry pages. Fewer pixels and fewer pages both reduce the size.

Take smaller photos in the first place

A page of text does not need a 12-megapixel camera. Lowering your camera resolution, or using a scanning app, gives files that are smaller before you start. Our scan image to PDF guide has capture tips.

Avoid huge screenshots

Screenshots from a large monitor contain many pixels. Balanced quality is usually enough for readable text. See PNG to PDF for more.

If it is still too large

Split the pages into two PDFs and send them separately, or check whether the portal accepts several files. See combining images into one PDF for ordering and page-size tips.

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