When you possess multiple independent rasterized images (like scanned receipts or ID photos in JPG/PNG format) on a macOS workstation, transmitting them as separate, fractured files is highly unprofessional. To force the native macOS Core Graphics engine to mathematically stitch these disparate image vectors together and compile them into a single, unified PDF document, you must deploy the Print to PDF matrix within the Preview application.
Executing the Image Stitching Matrix
The Preview engine lacks a direct “stitch” command, but you can bypass this limitation by hijacking the native macOS CUPS (Common UNIX Printing System) architecture, forcing the print spooler to output a digital PDF rather than physical ink.
- Locate your target image files in Finder.
- Hold the Cmd key and left-click each image to select them all simultaneously.
- Double-click any one of the selected files to open the entire array natively within a single Preview window.
- Look at the absolute top menu bar. Click the View menu and select Thumbnails (or execute Option + Cmd + 2).
- In the left-hand geometric sidebar, ensure all thumbnails are selected (click one, then press Cmd + A).
Deploying the PDF Compilation Vector
- Click the File menu and select the critical command labeled Print… (or execute Cmd + P).
- The macOS kernel will spawn a complex printing modal.
- To mathematically force multiple images onto a single page, locate the Layout settings. Change the “Pages per Sheet” parameter to 2, 4, or 6, depending on your geometric requirements. (If you want each image on its own page within the PDF, leave it at 1).
- Look at the absolute bottom-left corner of the print modal. You will see a small drop-down menu labeled PDF.
- Click this menu and select Save as PDF…
- Define your desired filename and save location, then click Save.
The system intercepts the command, violently fusing the separate image matrices into a completely secure, unified PDF structure, locking it to your hard drive.