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Scan Image to PDF: Turn Phone Photos of Documents into a PDF

You do not need a scanner. Here is how to photograph a document with your phone and turn the pictures into a clean, readable PDF.

Updated 21 October 2026

A phone camera is good enough to scan most documents. The trick is to take the photo carefully and then convert it to a PDF with sensible settings. This guide shows how to scan an image to PDF, whether you have one page or twenty.

Step 1: Take a clean photo

Place the page on a flat, plain surface such as a table. A dark background makes the edges easy to see.
Use bright, even light from a window or a lamp, and avoid shadows from your hand or phone.
Hold the phone directly above the page, parallel to the surface, so the text is not slanted.
Fill most of the frame with the page, and tap the screen to focus before you shoot.

Step 2: Crop and straighten

Use your phone’s photo editor to crop away the table and straighten the page. A tighter crop means larger text and a smaller file.

Step 3: Convert the image to PDF

Open the image to PDF converter and add your photos.
Arrange them in page order and rotate any sideways pages.
Choose A4 (or US Letter) with a small margin so the result looks like a normal document.
Use High quality for text pages, then click Convert to PDF.

Built-in scanner apps

Some phones have scanning built in, for example the Scan Documents option in Apple Notes on iPhone, or the Scan feature in Google Drive on many Android phones. These can detect edges and flatten the page for you. You can still use the photos or exported images with this converter if you want one combined PDF with your own page size and quality settings.

What this tool does not do

The converter builds a PDF out of your pictures. It does not run text recognition (OCR), so the text in a scanned page stays part of the picture and cannot be searched or copied. For most forms and uploads, that is fine.

Scanning tips for common documents

ID cards and passports: keep all four corners in frame and avoid glare from the shiny surface.
Receipts: flatten curled paper under a book for a moment before you photograph it.
Books and notebooks: photograph one page at a time rather than a double-page spread, so text stays large.
Whiteboards: step to the side if the lights reflect off the board.

Keep the file size reasonable

Many scanned pages make a large PDF. Balanced quality is usually enough for forms. If a portal has a strict limit, follow our guide on making a PDF from images smaller. To put several scanned pages in one file, see combine images into one PDF.

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