Turn an existing photo of a document into a scan

The document is already with the landlord, in your parents' folder or in the recycling. What is left is a photo on your phone, taken at an angle on the desk, with a pen and the table edge in the picture. And the form wants a scan.

Scanner apps are little help here: most of them expect you to hold the sheet in front of the camera again. A4Norm works on the photo you already have — right in the browser, and the photo itself goes nowhere.

Is that even possible?

Yes, as long as the whole sheet is in the photo. This is what it looks like, a real shot and its result, unretouched:

Before: a phone photo off the desk. After: the A4 page, made right in the browser

What happens along the way:

• the sheet is found in the picture and turned back into a rectangle;
• everything outside the sheet disappears: desk, pen, notebook spiral;
• uneven light is evened out and grey paper turns white;
• ink becomes neutral black, while a blue signature and a red stamp keep their colour;
• the page lands on exact A4, as a PDF of a few hundred kilobytes.

Some online tools make you drag the four corners by hand. Here the sheet is found automatically; if the scanner got it wrong, fix the corners in "Edit" → "Corners".

How to do it

1. Open the A4Norm page in any browser, on a phone or a computer. Free, no account, nothing to install.
2. Tap "Add photos or PDF" (on Android, "Choose photos") and pick the photo from your gallery — or several photos of one document at once. They appear as numbered thumbnails; to change the order, press and hold a thumbnail and drag it. Tap "Make the PDF" and you get one PDF, the pages in the same order.
3. Wait. Pages appear as they are made — usually about a second a page, up to a few seconds on slower devices.
4. Take the PDF. "Send" opens the system share sheet — mail, messengers, Files; on Android and on a computer, "Download PDF" is there too.
5. Forgot a page? Tap "More photos" under the finished PDF (a photo from the gallery: "More" → "Add pages from photos"; on a computer "More photos" opens the picker right away), then "Add to the PDF" — the new photo goes at the end; the others are not processed again.
6. Need it marked as a copy, or something covered? "Edit" under the finished PDF adds a note with the date, makes the PDF black and white, fills fields you do not want to show with black, erases a stain on an empty spot, crops an edge, rotates a page, reorders the pages and removes a page. How it works is in a separate guide.

A photo that reached you through WhatsApp or another messenger is already compressed. That cannot be undone, but it is usually enough for a readable page. If someone still has the original shot, ask them to send it as a file.

The photo came already put into a PDF? Choose that file on the scanner's first screen with "Add photos or PDF" (on Android, "Choose PDF") and tap "Make PDF smaller": a page that is really a photo gets the same treatment as a photo.

When it does not work

• A corner is missing or text is cut off. What is not in the photo cannot come back.
• The photo is blurry. Blur stays blur, just on white paper.
• The flash washed out the text. That information is gone.
• No sheet can be found at all. Then nothing is straightened and the photo is simply placed on the A4 page. That is deliberate, so ordinary pictures can go into a PDF too, but the result no longer looks like a scan.

So look at the PDF before you upload it. If you get the document back in your hands, a few habits when taking the photo make a clear difference.

Not a scan effect, a clean copy

Searching for "make a photo look scanned" also turns up tools that add noise, tilt and a grey cast to a file so that it appears scanned. A4Norm does the opposite: it removes what makes a photo different from a scan and leaves the content as it is. The PDF shows exactly the sheet that was photographed.

It follows what it is not: not a certified copy, not an electronic signature, not text recognition. Whether an authority or an employer accepts the file is up to them.

Where does the photo go?

Nowhere. The A4Norm page processes the photo right in the browser, on your device: neither the photo nor the finished PDF is sent to my server or to a cloud. Check it yourself — open the page, switch on airplane mode, and the scan still works.

The same scanner is in Telegram too: open the bot @a4norm_bot and tap the "Scanner" button at the bottom left. There, too, the photo is processed on your phone. Only the finished PDF can pass through my server — if you tap "Send to chat" so that the bot sends it to you; the server does not keep it. If processing fails on the phone — say, the document is very large — open the same page on a computer. The code is open, and there is also a Docker container that runs on your own computer with no network at all.