HowtoturnphotosintoasinglePDF

One image per page, in the order you set

Each photo becomes a page, in the order you arrange them before converting. Arrange first — reordering a finished PDF is a second job, and photo filenames rarely sort the way a document should read.

Mixing formats is fine. Anything the browser can open — JPG, PNG, WebP, most HEIC photos from an iPhone — can go into the same document.

Page size, and where white bars come from

Fitting a 4:3 photo to an A4 page leaves space somewhere, because the two shapes do not match. That is the white space people complain about, and it is geometry rather than a fault.

• A4 or Letter — the right answer when the PDF will be printed or submitted to a portal expecting a standard page.
• Fit to image — each page is sized to its own photo, so there are no bars at all. Ideal for screenshots and anything staying on screen.

Margins matter for the same reason. A 24-point margin looks deliberate on A4 and stops a printer trimming the edge of a document scan.

Photographing a document so it converts well

• Fill the frame with the page and shoot straight down — a skewed photo stays skewed in the PDF.
• Use daylight rather than a flash, which blows out the middle of a glossy page.
• Check for shadows from your own hand or phone before you take the shot; they are much harder to fix afterwards than to avoid.

If the result is bigger than a portal will accept, compress the finished PDF rather than shrinking each photo — one pass over the whole document gives a better result.