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Document Viewer

Show a document in an ActivityShow a document in a FragmentViewer configurationDay and Night themesOpen from online URL

Document Viewer components

PDFViewCtrlReflowFloating context menuCustomize floating context menuAnnotation toolbarAnnotation style dialogCustomize annotation style dialogPage sliderAnnotation listDocument outlineUser bookmark listList containerThumbnail browserAdd pages dialogRotate pages dialogView mode dialogCrop pages dialog

Annotation and collaboration

OverviewSet up ToolManagerRead only modeDisable annotation creation/editingDefault annotation propertiesAnnotation propertiesEventsOverride annotation handlingShow and hide existing annotationsUndo and redoRealtime collaboration

Advanced customization

Add a custom view to a pageCreate a custom toolPage coloring modePage fit modePage layout mode


Convert documents to PDFConvert HTML to PDF



Other Frameworks

XamarinReact Native

Advanced topics

Understand coordinatesDocument savingDocument lockingGenerate page thumbnailsTool class hierarchy


System RequirementsRun project in Android StudioRun project with source codePDFTron full vs. standardLocalizationIcon cheat sheetReduce size of APKEnable multidexOut of memory when rotating device multiple timesReduce memory consumptionDetachCurrentThread warning

PDF Processing API

What is PDFNet?Opening a documentSerializing (saving) a documentWorking with pagesWorking with Page ContentWorking with BookmarksWorking with Interactive Forms (AcroForms)PDF SecurityLow-level PDF APIError handling
Add pages dialogkeyboard_arrow_down

Add pages dialog

In this document
chevron_rightPage options
chevron_rightpage type (
chevron_rightpage size (
chevron_rightpage color (
chevron_rightCreating a new PDF document
chevron_rightAdding pages to an existing document

With AddPageDialogFragment users are able to add new pages to an existing document, or to create a new document with new pages. The new pages can have various types, sizes and colors.

Add page dialog from left to right: dialog for creating new document, dialog for adding pages to an existing document.

linkPage options

The following options are available for creating pages:

linkpage type (PageType)

Currently, the following types of page are supported in this dialog:

  • Blank: a page with nothing on it.
  • Lined: a page with horizontal lines on it.
  • Grid: a page with a superimposed grid on it.
  • Graph: a page with Cartesian axes on it.
  • Music: a page set up with modern staff notation for notating music.

linkpage size (PageSize)

Currently, the following page sizes are supported in this dialog: Custom, Letter, Legal, A4, A3, Ledger.

The Custom option is only available when adding new pages to an existing PDF document, not when a new document is being created. The page size of Custom option is specified as here: add pages to an existing document

linkpage color (PageColor)

The page background can be set to the following colors: White, Yellow, and Blueprint.

linkCreating a new PDF document

To create a new PDF document, call newInstance() and override the OnCreateNewDocumentListener interface. The implementation of onCreateNewDocument(PDFDoc, String) should create a new file with the given title normalized to a ".pdf" extension.

linkAdding pages to an existing document

To add pages to an existing PDF, create a new instance of the add page dialog fragment using newInstance(double, double) and provide the valid page width and page height arguments.These arguments will be used only if the user selects the Custom option in the Page Size dropdown. You also must implement the OnAddNewPagesListener interface and override onAddNewPages(Page[]), in which the implementation should add the provided pages to the document.