How to Convert Images to PDF Without White Borders
When you turn photos or scans into a PDF, two things decide whether you get unwanted white borders: the page size and the margin. Get them right and each page shows your image edge to edge.
Why borders appear
A4 and US Letter pages have a fixed shape, roughly 1:1.41 for A4 and 1:1.29 for Letter. A phone photo is usually 3:4 or 9:16, and a landscape photo 3:2 or 16:9. When an image’s shape doesn’t match the page, it’s scaled to fit inside the page, and the leftover space becomes white bands at the top and bottom or the sides. A margin setting adds a white frame on top of that.
The no-border recipe
- Open Image to PDF and add your images.
- Choose the page size that matches each image (shown as Original size), so every page takes the exact shape of its image.
- Set the margin to none.
- Create the PDF. Each page is now exactly as large as its image, with nothing added.
When you need A4 or Letter
Some portals and printers insist on A4 or Letter. In that case, crop the image to the page’s shape first, so it fills the page without bands. With Crop Image, set a free crop close to 1:1.41 for A4 portrait (for example 2,480 × 3,508 pixels at 300 DPI), or 1:1.29 for Letter (2,550 × 3,300). Then choose A4 or Letter with no margin.
Photos of documents
A phone photo of a paper document usually includes some of the desk around the paper. Crop tightly to the paper’s edges before making the PDF, and the result looks like a proper scan rather than a photo. In our example, two document photos became a two-page PDF in one step, with every page sized to its photo.
Keeping the file small
Image to PDF places JPG images into the PDF without re-compressing them, so the PDF is about as large as the photos themselves (2.2 MB of photos made a 2.2 MB PDF in our example). If a portal limits the PDF to 1 MB or 2 MB, compress the images first with Compress Image. For a PDF you already have, use Compress PDF, which shrank a 3.3 MB scanned PDF to 314 KB in our test.