How to Scan Documents With Your Phone and Make a Clean PDF
Updated: 2026-10-18
You do not need a scanner to send a clear copy of a certificate, a receipt or a filled form. A phone camera and the right settings give a result that looks like a real scan and is small enough to upload. The secret is in how you take the photo and which filter you choose.
Taking a good photo
Place the paper on a dark table so its edges stand out. Use daylight from a window and switch the flash off, because flash leaves a bright glare in the middle. Hold the phone straight above the paper, not at an angle, and fill the screen with the page. Tap the screen to focus and keep the phone still. Take one photo per page.
Making the PDF
Open the Scan to PDF tool on PDFPixo. On a phone, press Take photo to use the camera directly, page after page, or choose photos you already took. Pick a look and a page size such as A4, then press the button to get one PDF with all pages in order.
Which look to choose
Clean (shadows removed) whitens the paper and keeps colours, which suits marksheets and certificates with coloured stamps or logos. Black and white text gives the sharpest letters and the smallest file, best for typed or handwritten pages. Grey keeps soft shading. Original colour keeps the photo almost as it was, for photographs or coloured documents where colour matters.
Size limits and searchable text
Cleaned scans are usually far smaller than the camera photos. If a form still asks for a smaller file, open the PDF in the compressor and type the KB limit. If you want to copy text from the scan later, run the Read scanned PDF text tool, which reads English and Hindi.
Several documents in one file
Some forms want all documents in one PDF. Scan each document, then put them in order with the merge tool. Keep page order the same as the list in the form, so the person checking finds each document easily.
A worked example
Arjun needs to send his 10th and 12th marksheets and a caste certificate to a college as one PDF under 1 MB. He puts each paper on his dark study table near a window, opens Scan to PDF, and takes three photos with Take photo. He chooses Clean (shadows removed) because the certificates have coloured seals, and A4 as the page size. The PDF is about 600 KB, the seals keep their colour and the paper looks white. He opens the file once, checks that every page is straight, and sends it.
Common problems and fixes
Grey shadow across the page: your hand or phone is between the light and the paper; move the light source in front of you. Curved pages from a book: press the page flat with your fingers outside the area being photographed. Blurred letters: hold the phone with both hands, tap to focus and wait a moment before pressing. Edges cut off: step back a little so all four corners are in the photo. Yellow paper: the Clean or Black and white look whitens it.
Making text in the scan searchable
A scanned PDF is made of pictures, so you cannot search or copy its words. If you need the text, for example to copy a roll number or to find a word in a long scanned notice, open the scan in the Read scanned PDF text tool, choose English, Hindi or both, and it reads every page and gives you the text to copy. Reading works best on clean, straight scans with dark text on white paper, which is one more reason to choose the Clean or Black and white look when scanning. Always compare important numbers with the original, because text reading can confuse similar characters such as 0 and O.
Private by design
Photos of your documents are processed inside your browser and never uploaded.
Frequently asked questions
- Can I scan documents without a scanner app?
- Yes. Open Scan to PDF in your phone browser and take the photos there.
- Which look is best for certificates?
- Clean (shadows removed) keeps coloured seals while whitening the paper.
- How do I make the scan smaller?
- Use Black and white text, or compress the PDF to a KB limit afterwards.
- Can I add more pages later?
- Make another scan and join the PDFs with the merge tool.
- Are my documents uploaded?
- No. Everything happens in your browser.