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How to convert images to a PDF
Turn PNG, JPEG, HEIC, and other images into a single PDF, with tips on order, quality, and file size.
Images and PDFs serve different purposes. An image is great for a single picture, but when you have several related images — photos of a document, a set of design mockups, scanned receipts, or screenshots — a PDF binds them into one ordered, shareable file that looks far more professional than a pile of loose pictures.
This guide explains how to convert images to PDF, which formats are supported, and how to control order, quality, and size.
A PDF keeps multiple images together in a fixed order and a consistent layout. It opens identically on any device, prints as a single job, and attaches to an email as one tidy file rather than many. For anything you need to present as a document — rather than as individual pictures — a PDF is the right container.
PDFs also avoid the quirks of image files: photos that rotate unexpectedly, formats a recipient's device cannot open, or images that arrive in a jumbled order. Wrapping them in a PDF locks everything in place.
Common formats convert directly, including JPEG and PNG — the two you will meet most often — along with HEIC from modern iPhones, plus GIF, WebP, BMP, and TIFF. This covers virtually every image you are likely to have from a phone, camera, screenshot, or download.
If you have an unusual format, converting it to JPEG or PNG first will always work. For most people, though, the images straight off a phone or computer convert without any preparation.
Images become pages in the order you add them, so arrange them in the sequence you want before converting. If they represent numbered pages, sorting the files by name first keeps everything in order automatically.
After converting, check orientation. A photo taken in portrait or landscape should appear the right way up; if any page is sideways, a rotate tool fixes it in seconds. Reviewing the finished PDF once catches orientation and order problems before you share it.
Photos are large, so a PDF built from many high-resolution images can become heavy. If you need full detail — for printing artwork or design proofs — keep the quality high and accept the larger size. If the document is for reading or emailing, compressing it afterward trims the size substantially with no visible difference on screen.
There is a balance to strike: enough resolution that the images look crisp, but not so much that the file is impractical to send. For everyday documents, a compressed PDF is almost always the right choice.
An image-based PDF is, at heart, still pictures — you cannot search or select the text inside it. If the images contain text you want to use, run OCR on the finished PDF to add a searchable, selectable text layer behind the images.
This step is what separates a simple photo album from a genuinely useful document. A receipt PDF with OCR can be searched by amount or vendor; a scanned letter with OCR can be copied and quoted. For archives, it is well worth the extra moment.