How to scan paper into a clean, searchable PDF

A good scan is not just a photograph of paper. It is straight, readable, correctly ordered, reasonably small, and—when possible—searchable.

You can make one with a phone in a few minutes.

Set up the page

Place the paper on a flat surface with a contrasting background. Use bright, even light. Avoid a lamp reflection, your hand's shadow, and patterned fabric.

Flatten folded corners. For thin paper printed on both sides, place a blank dark sheet behind it to reduce show-through.

Scan with a phone

Use a document scanner, not the ordinary camera:

• On iPhone or iPad: Files > More > Scan Documents, or scan inside Notes.
• On Android: use the scan feature in Google Drive, Files by Google, or your phone's document scanner.

Hold the phone parallel to the page. Let the app detect the edges, then adjust the corners manually if it clips a signature or includes the desk.

Scan all pages into one file when they belong together. Check the order before saving.

Scan with a printer or desktop scanner

Choose PDF as the output. For text documents, 300 dpi is a good default. Use grayscale for ordinary black-and-white paperwork and color when stamps, highlighting, photographs, or colored signatures matter.

If the scanner supports double-sided pages, confirm whether blank backs should be removed.

Adobe's current scan-to-PDF guide covers connected scanners, image optimization, multiple pages, and text recognition.

Make the text searchable with OCR

OCR means optical character recognition. It adds an invisible text layer behind the page image.

You probably need OCR if:

• you cannot select a word
• search finds nothing even though the word is visible
• a screen reader only announces “image”
• you need to copy a paragraph

Open the PDF in a tool with Recognize Text, OCR, or Make Searchable. Choose the document's correct language. Run recognition, then save a new copy.

OCR is a helper, not a witness. It can confuse 0 and O, 1 and l, names, faint text, handwriting, and small numbers. Verify anything legal, medical, financial, or safety-critical against the page image.

Name and organize the scan

Use a filename that sorts well:

2026-07-28-vendor-receipt-1842.pdf

Avoid putting sensitive identifiers such as a full Social Security number in the filename. Filenames can appear in email subjects, logs, and shared folders.

Check the finished PDF

Before deleting or returning the paper:

1. Confirm the page count.
2. Check the top, bottom, and all four corners.
3. Zoom in on small print and signatures.
4. Search for a word from the middle page.
5. Confirm pages are upright and in order.
6. Back up an important document in an approved location.

If you can read it, find a word, and account for every page, the scan is ready.