Knowledge base

Explore our Awesome Nutrient GitHub repository for a wide variety of sample projects, code snippets, and videos.

While our knowledge base provides quick solutions to common customization questions, the GitHub repository offers even more examples, with new content continuously being added.

Annotations

• Add comment annotations programmatically

• Change the default line width for ink annotations

• Create text highlight annotations from text extraction

• Creating link annotations with text

• Delete all annotations

• Disable resizing of annotations

• Disable the movement of text annotations but allow editing the text

• Export an ink annotation as an image

• Get the visible annotations on the current page

• Implement an automatic annotation and field tab ordering

• Persist the currently edited note annotation text

• Prevent editing the content of a text annotation

• Render an annotation’s properties as a tooltip

• Rotate an ink annotation

• Showing the focus ring around read-only annotations

• Zoom to a specific annotation when a PDF loads

Document handling

• Check if a document contains annotations

• Check if a document is password protected

• Download an exported document

• Get the entered document password

• How do I limit the number of annotations in a PDF?

• How to load multiple files in a single viewer instance

• Load a PDF as an array buffer

• Load a PDF from a stream

• Load a minimal PDF stub from a string

• Manual Instant sync

• Process the currently rendered pages

• Render a document at full height

• Render a document in night mode

• Render a page in black and white

• Render a page to an image without annotations

• Render the visible area of the current page

• Restore the last seen page when reopening a document

• Save a modified PDF to Document Engine

Events and listeners

• Add a listener to a default toolbar item

• Add a listener while editing a text or note annotation

• Detecting when the Nutrient UI has loaded in the Web SDK

• Handling clicks on custom overlays

• Listen to an annotation’s hover event

• Observe Document Editor visibility

Forms

• Highlight required form fields

• Iterate over all form fields and widgets in a document

• Read-only forms

Navigation and display

• Customize the page indicator

• Determine the current layout mode

• Deselect the current text selection

• Focus on a widget annotation

• Focus on the PDF viewer when it loads

• How can I create a bookmark from an outline element?

• How do I disable changing the page when tapping the page edges?

• How do I rotate a page?

• How do I zoom to a specific value?

• How to add a custom toolbar item to display current zoom percentage

• Programmatically navigate to a page

Printing and exporting

• Add a watermark only when printing

• How do I prevent printing annotations?

• Prevent printing with Control-P

• Print output appears blurry compared to exported version

Search and text extraction

• Extract text from annotations and retrieve the current cursor position in the text

• Highlight custom search results

• How do I highlight text without an annotation?

Signatures

• Add signature initials

• Find an ink annotation for a signature form field

• Persist ink signatures across instances

• Submit ink signatures with a form

Styling and customization

• Control the appearance of the delete button with CSS

• Focus the delete button in a confirm dialog

• How do I resize a multiline text form field in height when it’s overflown?

• How do I toggle between themes?

• How to default to using a cloudy border

• Optimize Nutrient size for web applications

• Override the ink signature dialog

• Override the user agent

User interaction

• Add custom keyboard shortcuts

• Disable the context menu in Nutrient

• Wait for a specific element to appear

Licensing

• License registered for a different bundle identifier