A photo of a document as an A4 PDF, like from a scanner.
Photograph the document with your phone — right here in the browser it becomes an A4 PDF, like from a scanner: white paper, no desk, no shadows. The photo never leaves your device.

Make a scan
Pick a photo of a document — get an A4 PDF back.
The photo never leaves your device: everything is processed right in the browser.
Take or choose photos of all pages, then tap “Make the PDF”.
Already have a PDF?
Before and after
Real photos and this scanner's real results, unretouched. Yours will come out the same way — right in this browser.

A notebook on the desk: an angle, shadows, warm wood, the spiral in the frame.

Afterwards: a straight white A4, the pencil still grey, the ballpoint still blue.

An invoice with made-up details, shot on the sofa at night: fabric, shadow, a tilt.

Afterwards: the sheet straight, the shadow gone, the signature blue.

A made-up card from two photos: both sides on one A4, at their real size.

After “Edit”: “KOPIE für die Krankenkasse” with the date, the numbers under solid black.
A photo of a document is not a scan.
The sheet is at an angle, half of it is in shadow, the paper is grey and the file is four megabytes. The recipient sends it back and wants a real PDF scan — and you have no scanner.
Sound familiar?
Who A4Norm is for
This is for you if…
- You need to send a document to an authority, a bank or an insurer
- There is no scanner, and the copy shop is a trip of its own
- You would rather not upload a passport to someone else's app
- A copy must be marked, with some of it covered
- A finished PDF is too big for the form
This is not for you if…
- You need text recognition and search
- You need a qualified electronic signature or a certified copy
- You scan hundreds of pages a day
Why give it a try?
The photo never leaves your device
Everything runs right in the browser. Neither the photo nor the finished PDF goes to a server — not a single byte.
Works offline
Open the page once, and it keeps working in airplane mode and wherever there is no signal.
A straight sheet instead of a skewed shot
The sheet is found in the frame and unwarped into exact A4. Desk, shadow and spiral are erased, grey paper turns white.
The blue signature stays blue
Ink goes neutral black, while a blue signature and a red stamp keep their colour.
Passports, cards, a stack of pages
A passport spread on one page, both sides of a card on one sheet, several photos in one PDF. A forgotten page can be added later.
Mark a copy, hide sensitive data, sign
A “KOPIE für …” note with the date, sensitive data under solid black, your signature, the eraser, crop, rotation and page order — on your device.
Shrinks and joins PDFs
A PDF from another program that is too big to upload is rebuilt as a light A4: in a test, 88 MB became 962 KB. Several PDFs become one file.
The same scanner in Telegram
The “Scanner” button in the bot @a4norm_bot opens this scanner right inside Telegram. The photo stays on your device there too.
Three steps
Nothing to install — everything happens in your browser, on your device.
Choose or take a photo
One or several at once, then tap “Make the PDF”. Forgot a page? Add it later — the others are not processed again.
Wait a few seconds
Pages appear as they are made — usually about a second a page, up to a few seconds on slower devices.
Send the PDF
Straight to mail or a messenger through the share sheet — or just download the file. To mark the scan as a copy, hide sensitive data or sign it, tap “Edit” first — it opens the editor.
Privacy
- The photo is sent nowhere — not a single byte. The scan is made right in the browser; the server only delivers the processing code. Easy to check: open the page, switch on airplane mode, and the scan still works.
- The last scan is kept on your side only, in this browser, until you tap "New scan". A saved signature is kept there too.
- The scanner's core is open source: MIT licence, the source is on GitHub.
What the Telegram bot and "Send feedback" keep is in the privacy policy, section 12.
Frequently asked questions
What does it cost?
Nothing. You scan without paying, without limits and without an account.
Does it work offline? Where does the photo go?
Nowhere. After the page has been opened once, a scan works in airplane mode too — which also shows that the photo never leaves your device.
What about passports and cards?
Yes. A passport spread lands on one page as a colour copy, both sides of an ID card or a bank card on one sheet at their real size. How to mark such a copy is in the guide.
My PDF is too big — what can I do?
On the first screen, tap "Shrink it or join several into one" and choose the file: it is rebuilt as a light A4. Need it smaller still? The result already comes in "Smaller"; "Change size" under it offers "Minimum".
How is this different from scanner apps?
You have to install them, many want an account, and some send the photo to a cloud. Here there is no install, no account and no cloud, and the scanner's core is open source.
Guides
Try it on a document in front of you
Take a real sheet — a letter, an invoice, a certificate. Free, no account, nothing to install, and the photo stays on your device. One shot is enough to see whether this is for you.
Make a scan