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Illustration of a phone full of photos turning into a PDF: putting pages in order, choosing a page size, and getting JPGs from an iPhone.

Guide

How to Convert Photos (JPG) to PDF on Your Phone or Laptop

Forms and offices often want documents as a single PDF, but what you have is a set of photos. This guide shows how to put JPG photos into one PDF in the right order, which page size and margin to choose, how big the file will be, and what to do with iPhone photos saved as HEIC.

Published

Step by step

  1. Open the JPG to PDF tool. It runs in the browser, so nothing needs installing on your phone.
  2. Add your JPG photos. On a phone, you can choose them from your gallery or photo library.
  3. Check the order. One image becomes one page, in the order listed; use the arrows to move a photo up or down, or the × to remove it.
  4. Choose a page size: A4 (standard in Pakistan and most countries), US Letter, or Fit to image, where each page is the size of its photo.
  5. Choose a margin: none, small or large.
  6. Click Convert to PDF, wait for “Your PDF is ready”, and download it.

Which page size and margin to choose

Page size options in JPG to PDF
OptionUse it whenWhat happens
A4The PDF will be printed or submitted to an office, university or government formPhotos are scaled to fit a 210 × 297 mm page; landscape photos get landscape pages
US LetterThe recipient is in North AmericaThe same, on 8.5 × 11 inch pages
Fit to imageYou only need to share the photos as one fileEach page is exactly the size of its photo, with no white borders

Photos are never stretched or cropped: they are scaled to fit inside the margin and centred. A small margin looks tidy when printed; choose no margin if you want the photo to fill as much of the page as possible.

Keeping the PDF small enough to upload

Photos are placed in the PDF at their original quality, so ten 3 MB phone photos make a PDF of about 30 MB, too big for many forms and email. Two ways to get it smaller:

iPhone photos: HEIC to JPG

iPhones often save photos as HEIC rather than JPG. Most browsers cannot open HEIC, so ToolSolvo shows a message asking you to use JPG instead. Apple provides two ways to get JPGs1:

  • For new photos: on the iPhone, go to Settings › Camera › Formats and choose Most Compatible. New photos are then saved as JPG.
  • When copying to a computer: photos copied to a Mac or PC by USB can be converted to JPEG automatically. The Keep Originals option stops this conversion, so do not choose it if you want JPGs.

Screenshots, which are usually saved as PNG, can be added as they are: the tool accepts PNG as well as JPG.

Tips for photos of documents

  • Photograph the page flat, in good light, straight from above, filling the frame.
  • Avoid shadows from your phone or hand; daylight near a window works well.
  • Check each photo is sharp before converting: a blurry page stays blurry in the PDF.
  • If you need to copy the text out later, the PDF will contain pictures of text; use Image to Text (OCR) to read it.

Common questions

How do I put several photos into one PDF?

Add them all to JPG to PDF at once and arrange the order; the result is one PDF with one photo per page. To join PDFs you already have, use Merge PDF.

Can I convert JPG to PDF on my phone without an app?

Yes. JPG to PDF works in the phone’s browser. Very long sets of large photos take longer on a phone, because the work happens on the device.

Will the PDF lose quality?

No. Upright JPGs are placed in the PDF unchanged. Photos stored sideways are turned upright first, which re-saves them at high quality.

Can I add PNG images?

Yes. The tool accepts PNG as well as JPG and JPEG, and you can mix them in one PDF. Transparent areas of a PNG are placed on a white page. PNGs are not converted to JPG, so photos saved as PNG can make the PDF larger than the original files; screenshots usually stay compact. WebP images need converting with the Image Converter first.

Sources

  1. Apple Support: Using HEIF or HEVC media on Apple devices — Settings › Camera › Formats › Most Compatible saves photos as JPEG; photos imported to a Mac or PC are converted to JPEG unless Keep Originals is chosen.

Tools mentioned in this guide