PDFページを無料で回転：90度、180度、270度

PDF pages end up misoriented more often than you think:

• Scanned documents: Scanners often produce pages rotated 90 or 180 degrees, especially when mixing portrait and landscape in the same scan session.
• Phone photos: Photos taken in landscape sometimes insert as portrait PDFs, or vice versa. EXIF orientation metadata isn't always respected.
• Combined PDFs: When merging multiple PDFs, some pages may have different orientation than the rest.
• Government forms: Many official forms are landscape but download as portrait.
• Exported presentations: PowerPoint slides exported to PDF sometimes end up rotated.

Rotate any page instantly with the free NexTools PDF rotator — everything processed in your browser.

Using the NexTools PDF rotator:

Step 1: Open the tool. No registration or installation needed.

Step 2: Upload your PDF by dragging or clicking.

Step 3: Select pages to rotate — individual pages or all at once.

Step 4: Choose rotation: 90° (right), 180° (flip), 270° (left).

Step 5: Click "Rotate" and download the corrected PDF.

Rotation	Effect	Use case
90° right	Clockwise turn	Landscape document that should be portrait
90° left	Counter-clockwise	Same but opposite direction
180°	Completely flipped	Upside-down scanned document

Privacy: NexTools processes the PDF directly in your browser. The file never leaves your computer.

Common scenario: A 20-page PDF where pages 5, 12, and 18 are rotated 90° because they were landscape tables scanned alongside portrait text. You don't want to rotate the entire document — just those 3 pages.

In NexTools: Select specific pages (5, 12, 18), apply 90° rotation, and the rest stays intact.

Vs basic tools: Many free tools only rotate ALL pages at once, which is useless for mixed documents. Adobe Acrobat ($12.99/mo) allows individual rotation, but NexTools does it for free.

After rotating, if you need to combine with other PDFs, use the NexTools PDF merger.

pdftk:

• Rotate all 90° right: pdftk input.pdf cat 1-endright output rotated.pdf
• Rotate page 3 only: pdftk input.pdf cat 1-2 3right 4-end output rotated.pdf
• Flip 180°: pdftk input.pdf cat 1-enddown output flipped.pdf

qpdf: qpdf input.pdf --rotate=+90:1-5 -- output.pdf

Python (PyPDF2):

from PyPDF2 import PdfReader, PdfWriter
reader = PdfReader("input.pdf")
writer = PdfWriter()
for page in reader.pages:
  page.rotate(90)
  writer.add_page(page)
writer.write("rotated.pdf")

For quick use without installing anything, the NexTools online rotator is most practical.

1. Rotation doesn't save. Some PDF viewers (Adobe Reader, Edge) let you "rotate view" temporarily but don't save the rotation to the file. Solution: use a tool that modifies the file, not just the view.

2. Text appears upside down after rotating. This happens when the page already had rotation as metadata and you add additional rotation. Solution: verify actual orientation before rotating.

3. Margins cut off after rotating. If a portrait PDF is rotated to landscape but the viewer keeps the portrait viewing area, content may appear cut off. Not a real error — just change zoom or view.

4. Images inside PDF don't rotate. PDF page rotation is metadata that tells the viewer how to display the page. Embedded images rotate with the page automatically.

Page rotation vs page orientation: A PDF can have a portrait A4 page (210x297mm) with 90° rotation, displaying as landscape. Or it can be landscape A4 (297x210mm) with no rotation. Visually identical, technically different.

Check in Adobe Reader: File → Properties → Description → Page size. If it says "210 x 297 mm" but the page looks landscape, it has 90° rotation.

Check with pdfinfo: pdfinfo file.pdf shows page size and rotation.

Practical tip: If the page looks fine in your viewer, it probably doesn't need rotation. Only rotate if content is visibly misoriented.

EXIF metadata: Smartphone photos include orientation info in EXIF metadata. When converting to PDF, if the tool ignores EXIF, the image appears rotated.

Solution 1: Rotate the image before PDF conversion. Most photo viewers can rotate and save.

Solution 2: Use a converter that respects EXIF. The NexTools image to PDF converter respects EXIF orientation automatically.

If you need to compress images first, use the NexTools image compressor.

Documents needing rotation are often the most sensitive: scanned IDs, contracts, medical forms, certificates.

NexTools processes everything in your browser. The PDF file never leaves your computer. Verify by disconnecting internet — the tool keeps working.

Most other online tools (iLovePDF, Smallpdf, Sejda) upload files to their servers. For sensitive documents, always use tools that process locally.

You can also split your PDF before rotating if you only need to modify certain pages: use the NexTools PDF splitter.