Most of our products now support an Action Sheet found via the Action icon on the top right of the Document Preview screen. In addition, there is an Action icon in the navigation bar when viewing pages.

The commands available depend on the type of document you are working with, which product you own, or which in-app features you have purchased. 

We will review all the accessible features below from our LargeViewer product which contains the full feature set as part of the base product.

Remember, for single page TIFF/Fax and PDF documents, we pre-render the document for you as part of the importing process. This enables the Make PDF and printing. If the Always Make PDF setting is ON, we auto-generate the PDF file when we initially process the document.

For a multi-page PDF or TIFF/Fax file, you will see the menu below before it is pre-rendered. On the iPhone, the menu list may be scrollable.


Mail the document using the Mail interface if you have configured your device for Mail. If Mail is not configured the Mail action will not show.


Print the document if your device supports printing, if printing is not supported the Print action will not show.

Apple Preview

Open the document with Apple’s Preview viewer.

This may not work for all document types, and may fail if the PDF is large. Preview does have it’s own Action menu and you may find it offers different choices than our menu. 

Open WIth…  

Based on the document type you are opening, this menu shows all the apps that will open PDF or TIFF/Fax files.  

After you have pre-rendered the PDF you will see:

We have added an additional choice:

Expose MetaData

Each pre-rendered file is backed by a hidden meta-data file that contains the optimized graphic presentation of each page in the document. If you choose this command we make a copy of that file, and place it in the “Local Storage” screen so you can further manipulate it or copy it via iTunes. 

If for example the PDF was called “Example.pdf”  you would find a file called “Example.bytes16LLargeViewer” in the storage area. You can copy and import this file into our apps on another device to skip the pre-rendering step. 

This file is also made by our OS-X pre-rendering help product:

The OS-X product is most helpful if you want to pre-render thousand page PDF files, or enormous PDF or TIFF sheets (think of TIFF pages that are 10x10 meters).

Working with Fax or TIFF Files

For a Fax (TIFF/TIF) file that has multiple pages, you will see:

You can choose to Mail or Open WIth…, both of which use the TIFF/FAX document. 

Printing is not available for a multi-page fax until you pre-render the file. Normally this is automatic via a default Setting of ON.

For single-sheet TIFF documents, you will see a slightly different Action Sheet:


Hitting Print will print a single page TIFF. 

Make PDF

We convert the TIFF/Fax image to a PDF file. Note the PDF is created dot for dot according to the dpi set by the TIFF file. For TIFF files where the dot size is not square, we resample the TIFF to make the document appear normal. 

Once you have created a PDF from the original TIFF/Fax file you can:

Mail - Mails the original TIFF file.

Print - Prints the TIFF file via the PDF file. 

Mail PDF - Mails the created PDF file.

Open PDF With... - Lets you open the PDF with another app. 

"bytes16LLargeViewer" Files

For these files there are a number of different actions:

Make PDF - Takes the bits and makes a PDF.

However, this PDF is not the same as the original PDF. It is a bitmap, not a vector based image. This command is available so you can convert the metadata file to a PDF. You will then get the following Action Sheet which contains Print:

Working with Image Files

If Apple thinks the file is an image file, it will offer the Print action. Otherwise, you can Mail or Open With..

Action Sheets on a Page

For Version 1.7.4 and up we show an Action Button on each page:


You can Mail Page as PDF.

The Lock options allows you to set an orientation lock, a directional scrolling lock or the inner scroll lock (review our Variable Page Setting).

You can go to a bookmark via Go to Page. If you have not set any bookmarks you won't see any Go to Page buttons.

You can Learn Orientation to store the orientation and zoom factor for the document, a particular page or for even/odd pages. Once you choose the orientation, the scale and the positioning, you can Save For Document, the page, or for even/odd pages by tapping the Action icon again.

Depending on now many pages you have -- one or many -- and if you are on the even/odd page, you may have other choices. You can save a Look and Feel for the document then a different Look and Feel for a page. This is helpful for faxes where it may be upside down or contain a jumble of mixed pages where some are right side up and others upside down. 

Orientation settings are respected for printing.

Create URL Reference

You can create a URL Reference which has the form:

largeviewerbookmark : //example.pdf/1E04AF81-937E-46C8-A951-54D163F5A402?sox=352&pageNumber=41&rotation=2.207398&soy=132&createdBy=Example+iPad+2&szoom=0.64

As this is a text string, you can manually create this and embed it in Apple's Notes app so that tapping on it will open our app, open the document as well as go to the indicated page.

largeviewerbookmark://  is our schema.

example.pdf  the host is the book name.

1E04AF81-937E-46C8-A951-54D163F5A402 is an internal identifier. If we can't find the book using this data, we will use the book name.

This is followed by some data. pageNumber is required, the rest is optional.

pageNumber=41 page number

sox=352  offset in x direction

soy=132  offset in y direction

rotation=2.207398  rotation in radians

szoom=0.64  scale of the page.

createdBy=Example+iPad+2  is the iOS device that created the bookmark.

The URL bookmark overrides the scale/orientation/offset of the target page until you scroll two pages away. That information is then reset and you are shown the page based on the document/even/odd/page choices.