When to Convert Images to PDF
PDF is the universal document format — it looks identical on every device, can't be accidentally edited, and bundles many pages into a single file. That makes it the right choice whenever you're submitting or sharing rather than displaying on a screen.
Convert images to PDF when a portal or form requires PDF uploads, when you need to combine several photos (receipts, certificates, ID scans) into one file, or when you're sending documents that should print at a consistent size. For posting on the web or social media, keep images as JPG, PNG, or WebP instead — PDF isn't a display format.
All conversion runs entirely in your browser. Your files are never uploaded to a server, so even sensitive documents like IDs and contracts stay private on your device.
| Platform | Typical limit | Notes |
|---|---|---|
| Form / portal upload requires PDF | Image to PDF | Universal format |
| Combine many photos into one file | Images to PDF | Single document |
| Display on web or social media | JPG / PNG / WebP | PDF won't display |