PDF Tools: Merge, Split, Extract and Rotate

What each task does

• Merge combines the files in the order shown in your file list. Drag a file to a new place, or use its Up and Down buttons, before you merge.
• Split turns one PDF into several. Type page ranges to choose how pages are grouped, or make one PDF per page. When there is more than one part, the parts download together as a ZIP file.
• Extract, reorder or rotate pages shows a preview of every page. Tick pages and choose Extract selected pages to save just those, in the order shown. Move pages earlier or later, rotate them left or right, then choose Download all pages in this order to save the whole document with your changes.
• Re-save writes the file again with its internal objects packed into compressed object streams, and shows the size before and after.
• Document information lists the page count, each page size (for example A4 portrait, 210 × 297 mm), the PDF version, the title, author and other metadata, and whether the file is encrypted.

Writing page ranges

Separate ranges with commas. Page numbers start at 1, as in your PDF reader.

You type	Split makes	Extract selects
1-3, 5	two PDFs: pages 1–3, and page 5	pages 1, 2, 3 and 5
4	one PDF with page 4	page 4
8-	one PDF from page 8 to the end	page 8 to the last page
1-2, 3-4, 5-6	three PDFs of two pages each	pages 1 to 6

If a range is outside the document or runs backwards (such as 5-3), the tool explains what to change instead of guessing.

Why the compression is light

A PDF’s size usually comes from the images and fonts inside it. This tool can tidy how the file is stored, but it does not recompress images, so the saving is often small and sometimes nothing at all. When the re-saved copy is not smaller, the tool says so and you keep your original. To make a large PDF much smaller, export it again from the program that created it with a lower image quality, or shrink photos with the image compressor before you put them in a document.

Password-protected and damaged files

An encrypted PDF shows as Encrypted: unlock it first. You can still see its page count and page sizes, but its title and author are encrypted with the rest of the file. If you are entitled to edit it, open it with its password in your PDF reader and save or print an unprotected copy.

Files that do not start with the PDF signature (%PDF-) are refused, even if they are named .pdf. A file that is damaged or cut short gets a clear message: opening it in a PDF reader and saving a fresh copy often fixes it.

Good habits with PDFs

• Keep the original. Every task here creates a new file and leaves yours unchanged.
• Don’t edit or re-save a digitally signed PDF that you need to stay valid: any change to a signed file means the signature no longer matches it.
• Check the result before you send it, especially page order and rotation.

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