Combine JPG, PNG, or WebP images into a single PDF
Converting images to PDF is useful for scanned pages, receipts, screenshots, or portfolios. Combine multiple photos into one document for easy sharing and archiving. This guide covers when to use it and a free online tool.
A folder of loose images has no guaranteed order once it leaves your device — email clients and messaging apps often re-sort attachments alphabetically or by size. A single PDF locks in page order, opens identically on any device without a gallery app, and reads as one document instead of a scattered attachment list. That matters most for anything someone else needs to review in sequence: a multi-page scanned form, a set of receipts for an expense report, or a photo portfolio meant to be paged through rather than browsed.
Each image becomes its own PDF page sized to match its aspect ratio by default, so a landscape photo and a portrait scan in the same batch won't force each other into letterboxing. If the images are going to a printer or need to match a standard form factor, resize them to a consistent aspect ratio (A4 is roughly 1:1.41, US Letter is 1:1.29) before converting — a mismatch shows up as unexpected white margins or cropping once printed.
Phone-camera scans of documents are usually much higher resolution than a document needs, which bloats the resulting PDF without improving readability — text is legible well below 300 DPI equivalent. If the combined PDF comes out too large for an email attachment, compress it after conversion rather than degrading the source images; that keeps the images at full quality for any other use and only touches the final file size.