How to Convert JPG Photos to PDF: Complete Guide for All Devices

Converting JPG images to PDF is one of the most common document tasks — whether you're scanning receipts, submitting photo forms, or archiving photos. This guide covers every method across all platforms, explains image quality considerations, and helps you get the best output for your specific use case.

Why Convert JPG to PDF?

JPEG images are ideal for photos but come with real limitations as standalone files:

• No page structure: JPEG files have no concept of pages — if you have 12 scanned receipts, you have 12 separate files to manage and share
• Email and portal requirements: Many government portals, HR systems, and client portals require PDF submissions
• Professional appearance: PDFs look more professional than a folder of JPEGs for business submissions
• Long-term archiving: PDF/A is the archival standard; PDFs are more reliably readable 20+ years later than JPEG

Method 1: Browser Conversion (Free, Private, All Devices)

Folium's JPG to PDF converter accepts any number of JPEG or JPG files and combines them into a single multi-page PDF with your choice of page size. Everything runs in your browser — your photos never leave your device.

1. Open foliumio.netlify.app/jpg-to-pdf.html.
2. Click Choose Files or drag your JPEG images. You can select multiple files at once — each becomes one page in the PDF.
3. Choose page size: A4 (standard international), US Letter (North American standard), or Fit to Image (page size matches each image's dimensions exactly).
4. Click Convert to PDF. The PDF downloads immediately with all images embedded at their original quality.

Choosing the Right Page Size

A4 is the right choice for most professional and international documents. A4 dimensions (210×297mm / 8.27×11.69in) are the universal standard outside North America and are used by most government forms, academic institutions, and international businesses.

US Letter (8.5×11in) is the standard in the United States, Canada, and some Latin American countries. If your PDF will be printed on standard US office paper, use Letter.

Fit to Image creates PDF pages sized exactly to each image's pixel dimensions. This is best when you want to preserve exact dimensions — for example, a photo book where each page should be the same proportions as the photograph. The resulting PDF may have inconsistent page sizes if your photos have different aspect ratios.

Image Quality in the Output PDF

When Folium converts a JPG to PDF, the image is embedded directly into the PDF without re-encoding. This means there is no additional quality loss beyond what was already in your JPEG file. The image quality of the output PDF is identical to the original JPEG.

Images are scaled to fill the chosen page size while maintaining aspect ratio — any remaining space is white. The scaling is purely positional; pixels are not re-sampled or re-compressed.

Converting JPG to PDF on Mobile

iPhone/iPad: The Files app can convert images to PDF: select a photo in the Files app, tap Share, and choose Print. On the print preview screen, pinch outward on the preview to open it as a PDF in Files or share it directly. Alternatively, Folium works directly in Safari on iOS — the workflow is identical to desktop.

Android: Open Chrome, visit foliumio.netlify.app/jpg-to-pdf.html, and use the tool normally. Chrome on Android fully supports file selection and download. The Google Drive app also has a built-in "scan and save as PDF" function if you have a Google account.

Combining Many Images Into One PDF

If you have dozens of scanned pages, receipts, or photos to combine, the batch workflow is:

1. Ensure all images are in the same folder and named with a leading number prefix (01_, 02_, 03_…) so they sort correctly by filename.
2. Select all files in order (Ctrl+A or Cmd+A after sorting by name) and drag them to Folium's drop zone.
3. Verify the file list order matches your intended page order.
4. Click Convert to PDF for a clean multi-page document.

JPG to PDF Method Comparison

Method	Platform	Cost	Max Images	Privacy
Folium	Any browser	Free	No limit*	Local only
Adobe Acrobat Pro	Windows/Mac	$23/mo	No limit	Local
iPhone Files App	iOS only	Free	Limited	Local
Google Drive Scan	Android/iOS	Free	Many	Uploads to Google

* Limited by device RAM. Most devices handle 50+ images without issues.