Why Merge Images Into a Single PDF?
Sending ten separate image files by email is inconvenient for everyone. The recipient has to open each file individually, and there is no guaranteed order. Combining them into a single PDF solves all of this — the images appear in the correct sequence, in one file, that opens identically on every device.
Common use cases for merging images into a PDF:
How to Merge Images Into PDF Using imgs2pdf
imgs2pdf.com lets you upload multiple images of different formats and combine them into a single multi-page PDF in seconds. The entire process runs in your browser — no files are uploaded to any server.
Step-by-step:
- Page size: Fit to image, A4, or Letter
- Orientation: Portrait or Landscape
- Margins: None, Small, or Large
You can combine up to 50 images into one PDF. Supported formats include JPG, PNG, WebP, BMP, GIF, TIFF, and HEIC.
Mixing Different Image Formats
You can mix different image formats in the same PDF. For example, you could upload three JPG photos, two PNG screenshots, and one TIFF scan — they will all be combined into a single PDF. Each image becomes one page.
This is particularly useful when you are assembling a document from images captured on different devices or exported from different software.
Page Size Options Explained
Fit to image — each PDF page is exactly the same size as the image. This is best for photos where you want the page to match the image dimensions precisely.
A4 — the standard paper size used in Europe, Asia, and most of the world (210 × 297 mm). Images are scaled to fit within the A4 page while maintaining their aspect ratio.
Letter — the standard paper size in the United States (8.5 × 11 inches). Use this if the PDF will be printed in North America.
If you are combining images for a printable document, choose A4 or Letter. If you are combining photos for digital viewing only, Fit to image gives the cleanest result.
Controlling Image Order
The images appear in the PDF in the order they are shown in the thumbnail grid. You can drag and drop thumbnails to reorder them before converting.
If you need a specific order, upload your images one by one in the desired sequence, or rename them with numbered prefixes (01_photo.jpg, 02_photo.jpg) before uploading — they will appear in alphabetical order when uploaded together.
How to Merge Images Into PDF on Windows Without Software
Windows 10 and 11 include Microsoft Print to PDF, but it only works on one image at a time through the Photos app. To merge multiple images, you would need to open each one and print to the same PDF file — which is cumbersome.
The easiest no-software method on Windows is imgs2pdf.com. Open Chrome or Edge, go to the site, upload all your images at once, and download the merged PDF in under a minute.
How to Merge Images Into PDF on Mac Without Software
Mac users can use Preview to merge images:
This is the built-in Mac method. For faster results or more control over page size and margins, imgs2pdf.com is a good alternative.
File Size of the Output PDF
The output PDF file size depends on the number and size of your images. As a rough guide:
Images over 3MB are automatically slightly compressed during conversion to keep the PDF at a reasonable file size.
Privacy and Security
All conversion on imgs2pdf.com happens entirely within your browser. Your images are never uploaded to any server, never stored, and never shared. The conversion process uses JavaScript running locally on your device — as soon as you close the browser tab, no trace of your files remains anywhere.