Scanned pages, receipts, ID cards, and photos of physical documents often live on your phone as separate images. Bundling them into a single PDF is the fastest way to email, upload or archive them.
When to combine to PDF instead of sending images
A PDF stays as a single attachment, keeps page order, prints cleanly, and looks the same on every device. Sending 10 individual JPGs in an email works but is easy to mis-order and clutters the recipient's mailbox.
Steps
1. Open /jpg-to-pdf.
2. Tap Upload and select all the images (multi-select works on iPhone Photos, Android Gallery, and desktop file pickers).
3. Drag the image cards to change the page order.
4. Press Convert to PDF.
5. Download the finished file.
Tips
Rotate before uploading. If your phone saved photos in landscape when you meant portrait, rotate them in Photos / Gallery first. It saves a step later.
Compress after combining. A PDF of 20 phone photos is easily 30+ MB. Run it through Compress PDF before emailing.
HEIC images. HEIC (from newer iPhones) isn't accepted. Export as JPG on the phone first, or open the photo and 'Save a copy' as JPG.
For forms and receipts
If the image contains text you'll want to search or copy later, run OCR PDF on the resulting file. A photo of an invoice becomes a fully searchable document.
For a paper document, the fastest workflow is: photograph each page → JPG to PDF → optional Compress → optional OCR. Ten minutes for a full digitisation.