fix pdf orientation online

The first step is identifying exactly what's wrong. A page rotated 90 degrees clockwise needs a 270-degree (or counter-clockwise 90) correction to fix it, while a page rotated 90 degrees counter-clockwise needs the opposite. A fully upside-down page needs a 180-degree rotation. Getting the direction right the first time saves a second correction pass.

Scanners are a frequent cause of orientation problems, especially when scanning mixed portrait and landscape pages in one batch, or when paper is fed in slightly differently than the previous sheet. Phone camera scanning apps can also produce inconsistent orientation depending on how the phone was held for each shot.

If your document mixes multiple orientation problems, work through it methodically: identify every misoriented page first by scrolling through the whole document, note which direction each one needs, then apply corrections page by page or in grouped batches sharing the same needed rotation.

After fixing orientation, do a final check by scrolling through the corrected document from start to finish. This is worth doing even when you're confident about the fix, since it's the easiest way to catch a page that still needs correcting or one that got rotated the wrong direction by mistake.