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    Set PDF Open View

    Set start page, zoom, two-page view, bookmarks panel or full screen on open

    1Choose file2Settings3Process4Save

    Choose a PDF and its contents will be analyzed and shown here.

    Files are processed only in this browser. Nothing is uploaded to a server.

    Choose the start page, zoom, two-page view, bookmarks panel or full screen a PDF opens with

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    Task settings
    Settings

    When you add a file, its saved open settings are loaded. These settings are only recommendations to the viewer, so built-in browser viewers such as Chrome and Edge, and mobile apps, may ignore some of them. Check the result in Adobe Acrobat Reader.

    Opening view
    Layout · panels
    Window options
    Reading direction · print defaults

    Remove the password from an encrypted PDF first. Processing focuses on page content, so bookmarks, attachments, forms and signatures may not be preserved. Keep the original and check the result.

    About Set PDF Open View

    A PDF can record how it should look the moment it opens: which page and zoom to start at, single pages or two-page spreads, whether to show the bookmarks panel, and even the defaults for the print dialog. All of this lives in the catalog's OpenAction, PageLayout, PageMode and ViewerPreferences entries.

    These settings are recommendations, not commands. Dedicated viewers like Acrobat Reader mostly follow them, while the built-in viewers in Chrome and Edge and most mobile apps ignore some. When you add a file, its saved settings are loaded first, so you can see what will change before saving.

    Why spreads need the cover on its own

    In two-up layouts, “odd pages left” pairs pages 1–2, 3–4 and so on, while “cover separate” shows page 1 alone on the right and then pairs 2–3, 4–5. In a printed book page 1 is a right-hand page, so real spreads run even–odd. A PDF made for print should therefore open with “cover separate” to match the actual spreads. Slide decks, where every page stands alone, read better as continuous scroll.

    For documents that turn right to left, such as Arabic or Hebrew texts or vertically set Japanese books, setting the reading direction to right-to-left swaps which page sits on each side of a spread.

    Zoom, panels and print defaults

    For magnification you can pick viewer default (no open action), top of page at a set zoom (1–6400%), fit page, fit width or fit height. Choosing viewer default deletes a page-jump open action. If the file has an open action other than a page jump, such as a script, the tool warns you on loading and shows a “Keep the existing open action” box, ticked by default, so that action stays; untick it to delete it on save. Picking another start position replaces it.

    The panel on open can be bookmarks, thumbnails, layers or attachments; if you choose full screen, you can also set the panel shown after leaving it. On the print side, “Actual size · no scaling” matters most. Viewers usually shrink pages to fit the paper by default, so scaled drawings and label sheets that must print at exact dimensions need this set. You can also preset double-sided printing (flip on long or short edge) and the number of copies (1–5).

    Worked examples

    A proof of a book for binding

    Input
    120-page booklet; start page 1 at fit page; two-up spreads with cover separate; bookmarks panel; double-sided, flip on long edge
    Output
    In Acrobat: the cover alone on the right, then spreads 2–3, 4–5, with bookmarks on the left

    Proofreaders see the spreads exactly as they'll print and can check outer margins and the gutter. In Chrome's built-in viewer the layout setting is ignored and pages may show one at a time.

    How to use it

    1. Add the PDF; its current opening settings are loaded.
    2. Set the start page and zoom, layout and panel, window options, reading direction and print defaults.
    3. Save and open the file in a dedicated viewer such as Acrobat Reader to check.

    Frequently asked questions

    I set everything but Chrome opens it as usual.

    Browser viewers ignore most of these recommendations. The settings are saved in the file; check them in a dedicated viewer.

    If I hide the toolbar, can people still print?

    Yes. Hiding the toolbar or menu bar is only a request, and users can bring them back with shortcuts or viewer settings. Preventing printing requires a permissions password.

    What if I choose the bookmarks panel but there are no bookmarks?

    An empty panel opens. Create bookmarks first, then apply this setting.

    Notes

    Why the catalog is the starting point of a PDF is explained in the guide “How PDF Files Work”.

    Sources

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