Why convert JPG to PDF?
- One file instead of many — send a set of receipts, scanned pages or photos as a single document.
- Required by forms — many applications and portals only accept PDF uploads.
- Easy printing — A4 and Letter pages print predictably with no cropping.
How the conversion works
Each image becomes one page. JPG data is placed into the PDF unchanged, and the EXIF orientation is applied when the image is placed on the page, so pictures appear the right way up. With a fixed page size, each image is scaled to fit the printable area and centred.
What is a JPG file?
JPG (or JPEG) is the most common photo format. It uses lossy compression that discards detail the eye barely notices, which keeps files small — ideal for photos, scans and sharing by email or messenger. Every device, browser and image app can open it.
JPG does not support transparency, and repeated re-saving slowly reduces quality. Cameras and phones also store an orientation tag (EXIF) that tells apps how to rotate the picture for display.
What is a PDF file?
PDF (Portable Document Format) was created by Adobe and is now an open ISO standard (ISO 32000). A PDF fixes the exact layout of every page — fonts, images and positions — so a document looks the same on every screen and printer. That makes it the standard for contracts, invoices, manuals, papers and forms.
Inside, a PDF stores each page as drawing instructions. Text written by a program is stored as real characters (a “text layer”) and can be selected and extracted. Scanned documents usually store only a picture of each page, so their text cannot be extracted without OCR.