--- title: "Get an ink signature image in iOS" canonical_url: "https://www.nutrient.io/guides/ios/knowledge-base/how-do-i-get-an-image-from-signatureviewcontroller/" md_url: "https://www.nutrient.io/guides/ios/knowledge-base/how-do-i-get-an-image-from-signatureviewcontroller.md" last_updated: "2026-05-14T16:53:43.872Z" description: "Learn how to capture and create images of ink signatures using SignatureViewController with this detailed guide." --- # Capture ink signatures using SignatureViewController There are two options for getting the image of an ink signature from a `SignatureViewController`. ## Option 1 Subclass the [`SignatureViewController`](https://www.nutrient.io/api/ios/documentation/pspdfkitui/signatureviewcontroller) and override its [`done(_:)`](https://www.nutrient.io/api/ios/documentation/pspdfkitui/signatureviewcontroller/done(_:)) method to access its [`drawView`](https://www.nutrient.io/api/ios/documentation/pspdfkitui/signatureviewcontroller/drawview). This will create the ink signature. Once you have the ink signature, you can use [`Annotation.image(size:options:)`](https://www.nutrient.io/api/ios/documentation/pspdfkit/annotation/image(size:options:)) to create a `UIImage` of the ink annotation, like so: ### SWIFT ```swift class CustomSignatureViewController: SignatureViewController { override func done(_ sender: Any?) { super.done(sender) // The current document. let document =... let pageInfo = document.pageInfoForPage(at:0)! let pointSequences = self.drawView.pointSequences.map{ $0.map({ NSValue.valueWithDrawingPoint($0) }) } let pdfSpaceLines = ConvertViewLines(pdfLines: pointSequences, pageInfo: pageInfo, viewBounds: self.drawView.frame) let lines = pdfSpaceLines.map { $0.map({ $0.drawingPointValue }) } let inkAnnotation = InkAnnotation(lines: lines) // Create the `UIImage` from the ink annotation in your `SignatureViewController`. let image = inkAnnotation.image(size: inkAnnotation.boundingBox.size, options: nil) } } ``` ### OBJECTIVE-C ```objc @interface CustomSignatureViewController : PSPDFSignatureViewController @end @implementation CustomSignatureViewController - (void)done:(id)sender { [super done:sender]; // The current document. PSPDFDocument *document =... PSPDFPageInfo *pageInfo = [document pageInfoForPageAtIndex:0]; NSArray *> *pointSequences = self.drawView.pointSequences; NSArray *> *lines = PSPDFConvertViewLinesToPDFLines(pointSequences, pageInfo, (CGRect){CGPointZero, pageInfo.size}); PSPDFInkAnnotation *inkAnnotation = [[PSPDFInkAnnotation alloc] initWithLines:lines]; // Create the `UIImage` from the ink annotation in your `PSPDFSignatureViewController`. UIImage *image = [inkAnnotation imageWithSize:inkAnnotation.boundingBox.size options:nil]; } @end ``` ## Option 2 If, for whatever reason, the [`SignatureViewController`](https://www.nutrient.io/api/ios/documentation/pspdfkitui/signatureviewcontroller) is presented in a context in which a [`Document`](https://www.nutrient.io/api/ios/documentation/pspdfkit/document) isn’t available to get a reference [`PDFPageInfo`](https://www.nutrient.io/api/ios/documentation/pspdfkit/pdfpageinfo) object to perform the annotation calculations, you can call [`DrawView.drawHierarchy(in:afterScreenUpdates:)`](https://developer.apple.com/documentation/uikit/uiview/1622589-drawhierarchy) within an image rendering context to get a direct image out of [`DrawView`](https://www.nutrient.io/api/ios/documentation/pspdfkitui/drawview): ### SWIFT ```swift class CustomSignatureViewController: SignatureViewController { override func done(_ sender: Any?) { super.done(sender) let rect =... let renderer = UIGraphicsImageRenderer(size: rect.size) let image = renderer.image { _ in self.drawView.drawHierarchy(in: rect, afterScreenUpdates: true) } } } ``` ### OBJECTIVE-C ```objc @interface CustomSignatureViewController : PSPDFSignatureViewController @end @implementation CustomSignatureViewController - (void)done:(id)sender { [super done:sender]; CGRect rect =... UIGraphicsImageRenderer *renderer = [[UIGraphicsImageRenderer alloc] initWithSize:rect.size]; UIImage *image = [renderer imageWithActions:^(UIGraphicsImageRendererContext *rendererContext) { [self.drawView drawViewHierarchyInRect:rect afterScreenUpdates:YES]; }]; } @end ``` For more details about accessing properties from a [`SignatureViewController`](https://www.nutrient.io/api/ios/documentation/pspdfkitui/signatureviewcontroller) and its [`drawView`](https://www.nutrient.io/api/ios/documentation/pspdfkitui/signatureviewcontroller/drawview) property, take a look at [`SignAllPagesExample.swift`](https://github.com/PSPDFKit/pspdfkit-ios-catalog/blob/master/Catalog/Examples/Annotations/SignAllPagesExample.swift) from our [Nutrient Catalog app](https://www.nutrient.io/guides/ios/getting-started/example-projects.md#nutrient-catalog). --- ## Related pages - [Adjusting Size Of Popovers](/guides/ios/knowledge-base/adjusting-size-of-popovers.md) - [Fix app store connect operation errors in Xcode](/guides/ios/knowledge-base/app-store-connect-operation-errors.md) - 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