ocr for pdf

If Create PDF Tags is selected when you create a PDF from web pages, structure information that corresponds to the HTML structure of the original pages is stored in the PDF

To turn off Line Weights view, choose View > Show/Hide > Rulers & Grids > Line Weights againNote: You cannot turn off Line Weights view when viewing PDFs within a web browser

Show or hide navigation pane, tools pane, toolbar items and more While viewing a PDF, you can choose to select the following elements to be displayed in Acrobat from the View > Show/Hide menu: Navigation Panes: The navigation pane is an area of the workspace that can display different navigation panelsSelect to show or hide the Navigation menu itemsFor more information on navigation pane, see Navigating PDF pages

Tools Pane: The right-hand pane of Acrobat displays frequently used toolsChoose View > Show/Hide > Tools Pane to collapse the right-hand tools pane

Toolbar Items: To hide all toolbars, choose View > Show/Hide > Toolbar Items > Hide Toolbars

To return toolbars to their default configuration, choose View > Show/Hide > Toolbar Items > Reset ToolbarsStreams - represents sequence of bytes which can be of unlimited length as well Null Object - represents a null value There can be other other objects like comments which are introduced with the % sign and may contain 8-bit characters

Indirect Objects Any object in a PDF file may be labelled as an indirect objectIndirect objects are given unique object identifier by which other objects can refer to it

Cross-referencing to these are maintained in an index table and marked with the xref keyword which follows the main body and gives the byte offset of each indirect object from the start of fileLinear and Non-Linear PDF Layouts PDF layouts are categorized as Llnear and non-linear depending upon the target applications and other factors