Turn phone photos of documents into a proper PDF

Photograph it properly first

Everything downstream depends on this. No tool can recover detail that was never captured, straighten a page that curled, or remove a shadow that fell across the text.

Lay the page on a flat, contrasting surface — white paper on a dark desk. The contrast matters because it gives your phone's camera a clear edge to focus and expose on, and it makes cropping easier afterwards.

Use indirect daylight if you can. A window on an overcast day is close to ideal. Avoid direct sun, which blows out the white paper, and avoid overhead room lights directly above you, which put your own shadow on the page.

Hold the phone parallel to the page rather than at an angle, and fill the frame with the document. Shooting straight down is what makes the result look scanned rather than snapped.

A thirty-second checklist

1. 1Page flat, corners not curling — put a book on the edges if it will not lie flat.
2. 2Phone parallel to the page, not tilted.
3. 3Your shadow out of the frame.
4. 4The whole page inside the frame with a small margin around it.
5. 5Tap the screen on the text to lock focus before shooting.
6. 6Turn off flash — it creates a hot spot in the middle of the page.

If the paper is glossy or laminated, shoot at a slight angle to avoid a reflection, then straighten the result afterwards. A visible glare wipes out text permanently; a slight skew does not.

Combine the photos into one PDF

Selecting the photos in one go preserves their filename order, which for phone photos is chronological — so if you shot the pages in sequence, they arrive in sequence.

1. 1Open the JPG to PDF tool and select all your photos at once.
2. 2Check the order in the preview and remove any duplicate shots.
3. 3Choose A4 for a document that will be printed, or Fit to image to keep the photos' own proportions.
4. 4Press convert and download the single PDF.

A4 or fit to image?

This choice trips people up more than it should. It only affects the page geometry, not the picture quality.

When in doubt, choose A4. Anything that might be printed or officially submitted should be a standard page size.

Then tidy it up

Phone photos are large. A ten-page photographed document can easily start at 30 MB and end under 4 MB after compression, with no visible difference on screen. Compress before sending, always.

If a page came out sideways or the order is wrong, open the file in the Organize tool and fix individual pages there — rotate, reorder, or delete without redoing the whole conversion.

And if the document is text on white paper, converting to grayscale usually improves it. It removes the yellow or blue colour cast that phone cameras give white paper under artificial light, and it makes the file substantially smaller at the same time.

Make it searchable

A photographed page is an image, so nothing in it is searchable or copyable. If you will need to find this document later by its contents — or quote from it — run OCR on the finished PDF.

This is particularly worth doing for anything you are archiving: receipts, invoices, contracts, certificates. A folder of scanned images is a folder you have to open one by one; a folder of searchable PDFs is a folder you can actually query.

When to use your phone's built-in scanner instead

Both iPhone and Android can capture documents natively — iPhone through the Notes app or the Files app, Android through Google Drive's scan option. They detect the page edges and straighten the perspective automatically, which is genuinely useful and hard to replicate by hand.

Use them when the page is skewed or you are shooting in a hurry. Their output still tends to be heavy, and they often apply a high-contrast filter that can crush faint text, so compressing afterwards is worth it either way — and check that nothing important faded out.

Use plain photos plus this tool when you want control over the final page size, when you are combining shots taken at different times, or when the built-in scanner's automatic filtering is damaging a delicate original.