Receipts rarely arrive in a neat format. Some are paper slips photographed on a phone, some are screenshots from an app, and some are email attachments. When it is time to submit expenses, a single PDF is much easier to review than a pile of separate JPG and PNG files.
The goal is not just to merge images. A good receipt PDF should be readable, ordered correctly and small enough to upload through a company portal. That means a little preparation before you hit generate.
Clean and order the images first
Rename or sort the receipt images in the order you want them to appear: date, vendor or trip sequence. Crop obvious empty borders if your phone captured too much table or background. If a photo is sideways, rotate it before creating the PDF. Small corrections now save frustration when the finance team opens the final file.
If your images are huge, resize them before building the PDF. A receipt does not need to be a 12-megapixel photo. It needs to be readable. Reducing the long edge to around 1600 to 2000 pixels is usually enough for text clarity while keeping the PDF manageable.
Generate locally and verify readability
Use the Image to PDF tool, drop the receipt images in order, choose A4 or Letter and generate the file. The browser creates the PDF on your device, so receipts with addresses, card fragments or personal purchases are not uploaded to a remote conversion service.
Open the finished PDF before submitting it. Zoom to 100 percent and check merchant names, dates, totals and tax lines. If text looks soft, go back to the original photo and use a larger resize target or less compression. If the PDF is too large for a portal, resize the source images smaller and generate again.