VUISO SPLIT PDF — how to use
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Drop the pages you do not want, or pull a few out into a file of their own.
Everything happens inside your browser. Nothing is uploaded, there is no
account, and it works with the network switched off.

This tool works on ONE FILE at a time. To combine several use Vuiso Merge PDF;
to turn pages that came in sideways use Vuiso Rotate PDF.


OPENING IT

  Double-click "Vuiso Split PDF.html". It opens in your browser like a normal
  page. There is nothing to install. Chrome or Edge is recommended; Firefox and
  Safari work too.


THE SHORT VERSION

  1. Open PDF         (or drag the file onto the page area)
  2. Click the pages you do not want
  3. Remove Pages, then Save PDF


SELECTING PAGES

  Click                 select one page
  SHIFT + click         select everything between it and the last one clicked
  CTRL + click          add one page, or take one out of the selection
  CTRL + A              select every page
  Esc                   select nothing

  Clicking the only selected page again deselects it.

  The count in the toolbar always says how many pages the output has and how
  many of them are selected.


WHAT YOU CAN DO

  Remove Pages        takes them out of what will be saved. Your file on disk
                      is never opened for writing, so nothing you do here can
                      damage it. Each page also has its own X button when you
                      hover over it.

  Extract             writes ONLY the selected pages to a PDF of their own and
                      leaves your workspace exactly as it was. This is the
                      fastest way to pull three pages out of a hundred-page set
                      without unpicking anything.

  Insert Blank Page   puts an empty page after the last page selected, the same
                      size as that page. A spacer in an A4 document should be
                      A4, not a default the rest of the document is not.

  Save PDF            writes what is left, in the order shown.

  Both Save and Extract show a summary first. Nothing is written until you
  press the button in that window.


KEYBOARD SHORTCUTS

  Ctrl+O              Open PDF
  Ctrl+A              Select every page
  Esc                 Select nothing
  Delete              Remove the selected pages
  Ctrl+Z / Ctrl+Y     Undo / Redo
  Ctrl+E              Save PDF


NOTES

  - Page content is copied across untouched. Text stays text, vectors stay
    vectors, images keep their own resolution, and nothing is re-encoded - so
    nothing loses quality and a searchable PDF stays searchable.

  - Big documents open immediately. Thumbnails are drawn only as they scroll
    into view, and the cache holding them is capped, so a 200-page file does
    not end up sitting on hundreds of megabytes of pictures you are no longer
    looking at.

  - Memory, as a rough guide: allow about 300MB plus several times the size of
    the file. Under 50MB it is comfortable anywhere; a 100MB scan wants about
    2GB free. If it ever runs out the browser closes the tab, and because your
    original is never written to, you lose the arrangement and nothing else.

  - Forms and signatures: page content is preserved, but interactive form
    fields and digital signatures do not survive being copied into a new
    document. That is a limit of editing PDFs in general, not of this tool.

  - Nothing is stored. No cookies, no local storage, no database - closing the
    tab loses the arrangement, which is why there is a warning before you do.


PRIVACY

  The file contains a Content-Security-Policy that forbids network connections
  entirely. That is enforced by the browser, not promised by us: open DevTools,
  watch the Network tab, and it stays empty. You can also disconnect from the
  internet and the tool still works.

  Verify the copy you hold matches the one published:

      Windows      Get-FileHash "Vuiso Split PDF.html" -Algorithm SHA256
      macOS/Linux  shasum -a 256 "Vuiso Split PDF.html"

  Compare the result with the SHA-256 printed on the download page and in the
  .sha256.txt file next to this one.


LICENCE

  See LICENSES.txt, which must stay alongside the tool.