Normalize the format before combining
A JPG to PDF tool that only accepts .jpg/.jpeg is common, so an iPhone HEIC export or an SVG logo will be rejected until it is converted. Convert HEIC photos and rasterized vector graphics to JPG first so every file uploads on the first try.
- Convert HEIC photos to JPG.
- Rasterize SVG graphics to PNG at the size you need, then convert that PNG to JPG.
- Confirm every remaining file ends in .jpg or .jpeg before uploading.
Flattening transparency is expected
Converting a PNG or a rasterized SVG to JPG fills transparent areas with a white background, because JPG has no alpha channel. That is fine for a photo or a logo meant to sit on a white page, but check it against the final page background before combining.
Set the page order before you upload
Some JPG to PDF tools combine files in upload order and only offer a way to remove a file, not reorder one. Select or drag files in the exact sequence you want them to appear, and restart the selection if you need to change the order rather than trying to fix it afterward.
Choose the right format when extracting pages back out
Once photos and graphics are combined into a PDF, pulling a page back out as an image means choosing between JPG and PNG. JPG gives a smaller file for sharing a photo; PNG is lossless and keeps transparency, which matters more for a diagram, screenshot, or graphic than for a photograph.
Extracting a PDF page as an image
| Need | PDF to JPG | PDF to PNG |
|---|---|---|
| Smaller file for sharing a photo | Better fit | Larger file |
| Transparency or a graphic with sharp edges | Not supported | Better fit |
| Adjustable DPI and quality | Yes | Yes |