--- title: "Knowledge base of Nutrient Web SDK | Troubleshooting tips for developers" canonical_url: "https://www.nutrient.io/guides/web/kb/" md_url: "https://www.nutrient.io/guides/web/kb.md" last_updated: "2026-05-18T13:37:23.538Z" description: "Explore FAQs and troubleshooting tips for Nutrient Web SDK. Find code samples for annotations, signatures, document handling, and more. Learn how to integrate Nutrient Web SDK effectively." --- # Knowledge base Explore our [Awesome Nutrient GitHub repository](https://github.com/PSPDFKit/awesome-nutrient) 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](https://github.com/PSPDFKit/awesome-nutrient) offers even more examples, with new content continuously being added. ## Annotations - [Add comment annotations programmatically](https://www.nutrient.io/guides/web/knowledge-base/programmatic-comment-annotations.md) - [Change the default line width for ink annotations](https://www.nutrient.io/guides/web/knowledge-base/change-default-line-width-ink-annotations.md) - [Create text highlight annotations from text extraction](https://www.nutrient.io/guides/web/knowledge-base/create-highlight-annotations-from-text-extraction-technology.md) - [Creating link annotations with text](https://www.nutrient.io/guides/web/knowledge-base/link-text.md) - [Delete all annotations](https://www.nutrient.io/guides/web/knowledge-base/delete-all-annotations.md) - [Disable resizing of annotations](https://www.nutrient.io/guides/web/knowledge-base/disable-resize-of-annotations.md) - [Disable the movement of text annotations but allow editing the text](https://www.nutrient.io/guides/web/knowledge-base/disable-text-annotation-movement.md) - [Export an ink annotation as an image](https://www.nutrient.io/guides/web/knowledge-base/export-ink-annotation-image.md) - [Get the visible annotations on the current page](https://www.nutrient.io/guides/web/knowledge-base/get-visible-annotations.md) - [Implement an automatic annotation and field tab ordering](https://www.nutrient.io/guides/web/knowledge-base/automatic-annotation-field-tab-ordering.md) - [Persist the currently edited note annotation text](https://www.nutrient.io/guides/web/knowledge-base/persist-currently-edited-note-test.md) - [Place annotations at the visible center of the viewport](https://www.nutrient.io/guides/web/knowledge-base/place-annotation-at-visible-center.md) - [Prevent editing the content of a text annotation](https://www.nutrient.io/guides/web/knowledge-base/prevent-editing-content-text-annotation.md) - [Render an annotation’s properties as a tooltip](https://www.nutrient.io/guides/web/knowledge-base/show-annotations-properties-as-tooltip.md) - [Rotate an ink annotation](https://www.nutrient.io/guides/web/knowledge-base/rotate-ink-annotation.md) - [Showing the focus ring around read-only annotations](https://www.nutrient.io/guides/web/knowledge-base/show-focus-ring-read-only.md) - [Zoom to a specific annotation when a PDF loads](https://www.nutrient.io/guides/web/knowledge-base/zoom-to-specific-annotation.md) ## Document handling - [Check if a document contains annotations](https://www.nutrient.io/guides/web/knowledge-base/check-document-contains-annotations.md) - [Check if a document is password protected](https://www.nutrient.io/guides/web/knowledge-base/check-password-protected-files.md) - [Download an exported document](https://www.nutrient.io/guides/web/knowledge-base/download-exported-document.md) - [Get the entered document password](https://www.nutrient.io/guides/web/knowledge-base/get-entered-document-password.md) - [How do I limit the number of annotations in a PDF?](https://www.nutrient.io/guides/web/knowledge-base/how-do-i-limit-the-number-of-annotations.md) - [How to load multiple files in a single viewer instance](https://www.nutrient.io/guides/web/knowledge-base/loading-multiple-files.md) - [Load a PDF as an array buffer](https://www.nutrient.io/guides/web/knowledge-base/load-pdf-as-arraybuffer.md) - [Load a PDF from a stream](https://www.nutrient.io/guides/web/knowledge-base/load-pdf-from-stream.md) - [Load a minimal PDF stub from a string](https://www.nutrient.io/guides/web/knowledge-base/load-pdf-stub-from-string.md) - [Manual Instant sync](https://www.nutrient.io/guides/web/knowledge-base/manual-instant-sync.md) - [Process the currently rendered pages](https://www.nutrient.io/guides/web/knowledge-base/process-currently-rendered-pages.md) - [Render a document at full height](https://www.nutrient.io/guides/web/knowledge-base/render-document-full-height.md) - [Render a document in night mode](https://www.nutrient.io/guides/web/knowledge-base/render-night-mode.md) - [Render a page in black and white](https://www.nutrient.io/guides/web/knowledge-base/render-page-black-white.md) - [Render a page to an image without annotations](https://www.nutrient.io/guides/web/knowledge-base/render-page-without-annotations.md) - [Render the visible area of the current page](https://www.nutrient.io/guides/web/knowledge-base/render-visible-area-in-current-page.md) - [Restore the last seen page when reopening a document](https://www.nutrient.io/guides/web/knowledge-base/restore-last-seen-page.md) - [Save a modified PDF to Document Engine](https://www.nutrient.io/guides/web/knowledge-base/save-modified-pdf-to-document-engine.md) ## Events and listeners - [Add a listener to a default toolbar item](https://www.nutrient.io/guides/web/knowledge-base/add-listener-toolbar-item.md) - [Add a listener while editing a text or note annotation](https://www.nutrient.io/guides/web/knowledge-base/add-listener-text-note-annotation.md) - [Detecting when the Nutrient UI has loaded in the Web SDK](https://www.nutrient.io/guides/web/knowledge-base/detect-pspdfkit-ui-loaded.md) - [Handling clicks on custom overlays](https://www.nutrient.io/guides/web/knowledge-base/handling-clicks-on-custom-overlays.md) - [Listen to an annotation’s hover event](https://www.nutrient.io/guides/web/knowledge-base/annotations-hover-event.md) - [Observe Document Editor visibility](https://www.nutrient.io/guides/web/knowledge-base/observe-document-editor-visibility.md) ## Forms - [Handle unsupported form field actions](https://www.nutrient.io/guides/web/knowledge-base/handle-unsupported-form-field-actions.md) - [Highlight required form fields](https://www.nutrient.io/guides/web/knowledge-base/highlight-required-fields.md) - [Iterate over all form fields and widgets in a document](https://www.nutrient.io/guides/web/knowledge-base/iterate-over-form-fields.md) - [Read-only forms](https://www.nutrient.io/guides/web/knowledge-base/read-only-forms.md) ## Navigation and display - [Customize the page indicator](https://www.nutrient.io/guides/web/knowledge-base/customize-page-indicator.md) - [Determine the current layout mode](https://www.nutrient.io/guides/web/knowledge-base/determine-current-layout-mode.md) - [Deselect the current text selection](https://www.nutrient.io/guides/web/knowledge-base/deselect-text.md) - [Focus on a widget annotation](https://www.nutrient.io/guides/web/knowledge-base/focus-widget-annotation.md) - [Focus on the PDF viewer when it loads](https://www.nutrient.io/guides/web/knowledge-base/focus-viewer-after-loading.md) - [How can I create a bookmark from an outline element?](https://www.nutrient.io/guides/web/knowledge-base/how-to-create-bookmarks-from-outline-elements.md) - [How do I disable changing the page when tapping the page edges? ](https://www.nutrient.io/guides/web/knowledge-base/how-do-i-disable-scrolling-on-page-edges.md) - [How do I rotate a page?](https://www.nutrient.io/guides/web/knowledge-base/how-do-i-rotate-a-page.md) - [How do I zoom to a specific value?](https://www.nutrient.io/guides/web/knowledge-base/how-do-i-zoom-to-a-specific-value.md) - [How to add a custom toolbar item to display current zoom percentage](https://www.nutrient.io/guides/web/knowledge-base/add-custom-zoom-perentage.md) - [Programmatically navigate to a page](https://www.nutrient.io/guides/web/knowledge-base/programmatically-navigate-to-page.md) ## Printing and exporting - [Add a watermark only when printing](https://www.nutrient.io/guides/web/knowledge-base/render-watermark-when-printing.md) - [How do I prevent printing annotations?](https://www.nutrient.io/guides/web/knowledge-base/how-do-i-prevent-printing-annotations.md) - [Prevent printing with Control-P](https://www.nutrient.io/guides/web/knowledge-base/prevent-shortcut-printing.md) - [Print output appears blurry compared to exported version](https://www.nutrient.io/guides/web/knowledge-base/blurry-print-resolution.md) ## Search and text extraction - [Extract text from annotations and retrieve the current cursor position in the text](https://www.nutrient.io/guides/web/knowledge-base/extract-annotation-text-and-retrieve-cursor-position.md) - [Highlight custom search results](https://www.nutrient.io/guides/web/features/customized-search.md) - [How do I highlight text without an annotation?](https://www.nutrient.io/guides/web/knowledge-base/create-highlight-annotations-from-text-extraction-technology.md) ## Signatures - [Add signature initials](https://www.nutrient.io/guides/web/knowledge-base/add-signature-initials.md) - [Find an ink annotation for a signature form field](https://www.nutrient.io/guides/web/knowledge-base/find-ink-annotation-for-signature-form-field.md) - [Persist ink signatures across instances](https://www.nutrient.io/guides/web/knowledge-base/persist-ink-signatures-across-instances.md) - [Submit ink signatures with a form](https://www.nutrient.io/guides/web/knowledge-base/submit-ink-signatures-with-form.md) ## Styling and customization - [Control the appearance of the delete button with CSS](https://www.nutrient.io/guides/web/knowledge-base/control-appearance-of-delete-button-on-ink-annotations.md) - [Focus the delete button in a confirm dialog](https://www.nutrient.io/guides/web/knowledge-base/focus-delete-button-in-confirm-modal-component.md) - [How do I resize a multiline text form field in height when it’s overflown?](https://www.nutrient.io/guides/web/knowledge-base/how-do-i-resize-form-fields.md) - [How do I toggle between themes?](https://www.nutrient.io/guides/web/knowledge-base/how-do-i-toggle-the-theme.md) - [How to default to using a cloudy border](https://www.nutrient.io/guides/web/knowledge-base/default-to-cloudy-border.md) - [Keep widget annotation dimensions consistent across devices](https://www.nutrient.io/guides/web/knowledge-base/consistent-widget-annotation-dimensions.md) - [Optimize Nutrient size for web applications](https://www.nutrient.io/guides/web/knowledge-base/nutrient-size-optimization.md) - [Override the ink signature dialog](https://www.nutrient.io/guides/web/knowledge-base/override-ink-signature-dialog.md) - [Override the user agent](https://www.nutrient.io/guides/web/knowledge-base/override-user-agent.md) ## User interaction - [Add custom keyboard shortcuts](https://www.nutrient.io/guides/web/knowledge-base/add-custom-keyboard-shortcuts.md) - [Disable the context menu in Nutrient](https://www.nutrient.io/guides/web/knowledge-base/disable-context-menu.md) - [Wait for a specific element to appear](https://www.nutrient.io/guides/web/knowledge-base/wait-for-element-appear.md) ## Troubleshooting - [Web SDK vs. DWS Viewer: Which key do I use?][85] ## Licensing - [License registered for a different bundle identifier](https://www.nutrient.io/guides/web/knowledge-base/license-registered-different-bundle-id.md) --- ## Related pages - [Appian PDF viewer](/guides/web/appian.md) - [JavaScript barcode library: Scan, read, and generate barcodes](/guides/web/barcodes.md) - [Best practices](/guides/web/best-practice.md) - [Contributing to Nutrient projects](/guides/web/miscellaneous/contributing.md) - [Samples](/guides/web/samples.md) - [Changelog for Web](/guides/web/changelog.md) - [Explore interactive JavaScript PDF demos](/guides/web/demo.md) - [Download our JavaScript library](/guides/web/downloads.md) - [JavaScript PDF library](/guides/web.md) - [Developer guides for JavaScript PDF library](/guides/web/intro.md) - [Mendix PDF viewer](/guides/web/mendix.md) - [Perform OCR on PDF documents](/guides/web/ocr.md) - [OutSystems PDF viewer](/guides/web/outsystems.md) - [Self-host assets in Web SDK](/guides/web/self-host-assets.md) - [Troubleshooting](/guides/web/troubleshoot.md)