How to scan documents on your phone for online forms

Light and a dark surface

Scan near a window in daylight rather than under a tube light, and switch the flash off: it makes a bright patch that hides text. Put the paper on a dark, plain surface such as a table or a bedsheet, so its edges stand out, and hold the phone flat, straight above the page, not at an angle.

Use the scanner already on your phone

You don't need a scanning app. On an iPhone, open Notes, start a new note, tap the camera button and choose Scan Documents. On Android, open the Google Drive app, tap the + button and choose Scan. Both find the edges of the page, straighten it and save a PDF or image, which is far cleaner than a normal photo.

Black and white or colour?

Typed certificates, mark sheets and letters read best in black and white or greyscale, and the file is much smaller. Keep colour when the form asks for it, or when colour carries meaning: a photo on the document, a coloured seal or stamp, or a signature in blue ink.

One PDF, pages in order

Most forms want one file per document. A two-page certificate goes into one PDF, page 1 first; your 10th and 12th mark sheets are usually two separate uploads. Read the upload labels on the form before you start, so you scan in the right groups.

Fitting the size limit

A phone scan of one page is often 1–3 MB, while forms commonly allow 100–500 KB per document. Put the scanned pages into one PDF, then compress it to the limit. Before uploading, open the result and zoom to 100%: if you can read the smallest line, the verifier can too.

Name files so you can find them

Give each file a plain name, such as 10th-marksheet.pdf or caste-certificate.pdf. Some portals refuse names with spaces or symbols, and clear names stop you uploading the wrong document in a hurry.