Batch image-to-PDF conversion comes up in dozens of practical scenarios: assembling a photo report, combining scanned pages into a single document, packaging screenshots into a readable reference, or building a portfolio from individual image exports. The challenge is always the same: maintaining the right page order while keeping the workflow fast.
Dropping multiple files at once
PurePDF accepts multiple image files in a single drop operation. You can drag and drop an entire folder's worth of images — JPG, PNG, WebP, and GIF files can all be mixed together in the same batch. Each image becomes one page in the output PDF, in the order it was added. The order is shown in the upload grid immediately after dropping, so you can review the sequence before converting.
Controlling page order
Page order is often the most important factor in a batch conversion. Files added via drag-and-drop will typically arrive in the order your file system presents them — usually alphabetical by filename. If your images are named sequentially (page_001.jpg, page_002.jpg, etc.) this works perfectly. If they are named descriptively or randomly, you will need to reorder them after uploading using PurePDF's drag-and-drop thumbnail grid.
Choosing settings for a batch
The page size setting applies uniformly to all pages in a batch. If your images have very different aspect ratios, the "Original" page size is usually the best choice, since it sizes each page to exactly fit its image without scaling or cropping. For batches of standard document scans intended for print, A4 or Letter with a small margin produces a cleaner, more professional result.
Performance considerations
Large batches — 50 or more images, or batches of high-resolution images — require substantial browser memory. If you encounter slowdowns or browser crashes, try reducing the quality setting or split the batch into two or three smaller groups and combine the resulting PDFs using PurePDF's Merge tool afterwards.
