A landscape page scanned sideways — turn it before you make the PDF

2026-10-09

You scan a wide document — a spreadsheet printout, a chart, a landscape certificate — and the image comes out lying on its side, because the scanner or the phone app saved the page upright in portrait. Make a PDF from that and the recipient opens a sideways page. They can turn their view, but most won't bother, and the PDF still looks careless.

The fix takes seconds, and the order matters: turn the image first, then make the PDF.

Why the order matters

When our converter turns an image into a PDF, the page takes its shape from the image: one image pixel becomes one point on the page, so the page has exactly the image's proportions. A portrait image makes a portrait page, a landscape image makes a landscape page. There is no separate page-orientation setting — the image is the page.

So a sideways scan produces a sideways portrait page, and no PDF setting will stand it up again. Rotate the image so the content reads normally, and the PDF made from it is a landscape page that opens the right way round in every viewer, because there's nothing left to correct.

Turning the page in a PDF viewer is a different thing. Depending on the viewer, that can change only how you are looking at the file on your own screen; it isn't necessarily what the next person sees. Fixing the image itself leaves nothing to chance.

Step 1 — turn the scans

Drop the scans into our rotate tool and pick the quarter turn that makes the text read normally. Angles are clockwise: 90° is a quarter turn clockwise, 270° a quarter turn counter-clockwise. A quick way to choose: if the lines of text run upward from the bottom of the page, the top of the page is on the left — pick 90°. If they run downward, the top is on the right — pick 270°. The thumbnails and the large preview show the turned result straight away, so you'll see immediately if you guessed wrong.

The same angle applies to every image in the batch, which suits a stack of pages that all came out of the scanner the same way. If some pages are portrait and only a few are sideways, rotate just the sideways ones.

A quarter turn swaps width and height — a 2480×3508 scan comes back 3508×2480 — and the turn only moves pixels; it doesn't blend or soften them. JPG scans are re-encoded at the quality you choose (Recommended is 82, High quality 94); PNG scans stay PNG with every colour kept. Each file is saved with _rot90 or _rot270 in its name.

Step 2 — make the PDF

Take the turned images to JPG to PDF (or PNG to PDF for PNG scans). Each image becomes a one-page PDF shaped exactly like the image — now landscape. The picture is stored inside the page as a JPEG, so the quality setting applies here too: for pages full of small print, choose High quality so letters stay crisp; Recommended keeps the file lighter for ordinary text.

The PDF's page size is the image's pixel size counted in points, so a high-resolution scan makes a physically large page. On screen that doesn't matter — viewers fit the page to the window — but if you are going to print, use your printer's fit-to-page option.

Both steps stay on your device

Scanned documents are often exactly the files you'd rather not upload — contracts, statements, records. Rotation and PDF conversion both run inside your browser tab, so the pages never leave your machine on the way from scanner to PDF.

What the tools don't do

There's no automatic detection of sideways pages: the tool turns pages exactly as far as you tell it, no more and no less. And each image becomes its own PDF — we don't combine several images into one multi-page document. For a single page, or a set of pages sent as separate files, that's all you need.

The short version

• The PDF page takes the image's shape, so fix orientation in the image first.
• Text reading upward → 90°; reading downward → 270°.
• Then convert: each turned image becomes a landscape one-page PDF.
• Choose High quality for small print; use fit-to-page when printing.