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Diagram Export
Updated on Oct 1, 2026
The Telerik Diagram for Blazor allows you to export the current Diagram as a PNG image or a PDF document. The export methods return a base64-encoded data URL that you can use to download or further process the exported file.
Export Methods
To export the Diagram, capture a component reference and call one of the following methods:
| Method | Parameters | Return Type | Description |
|---|---|---|---|
ExportToPngAsync | none | Task<string> | Exports the Diagram as a PNG image and returns a base64-encoded data URL. |
ExportToPdfAsync | PdfExportOptions? | Task<string> | Exports the Diagram as a PDF document and returns a base64-encoded data URL. |
Both methods return a data URL string in the format data:<media-type>;base64,<data>. To get the raw bytes, strip the prefix up to and including the first comma.
PDF Export Options
Pass a PdfExportOptions object to ExportToPdfAsync to customize the PDF output. All properties are optional.
| Property | Type | Default | Description |
|---|---|---|---|
AutoPrint | bool? | null | Specifies if the Print dialog opens immediately after loading the document. |
Author | string? | null | The author metadata of the PDF document. |
Creator | string? | null | The creator metadata of the PDF document. |
ImgDpi | int? | null | The forced resolution of images, including SVGs, in the exported PDF. By default, images export at their native resolution. |
Keywords | string? | null | The keywords metadata of the PDF document. |
Landscape | bool? | null | When true, the page uses landscape orientation. Defaults to portrait. |
Margin | string? | null | The margins of the page. Supported units are mm, cm, in, and pt. |
MultiPage | bool? | null | When true, exports child groups as separate pages. |
PaperSize | string? | null | The paper size of the PDF document. Supported values are A0–A10, B0–B10, C0–C10, Executive, Folio, Legal, Letter, and Tabloid. |
Producer | string? | null | The producer metadata of the PDF document. |
Subject | string? | null | The subject metadata of the PDF document. |
Title | string? | null | The title metadata of the PDF document. |
Example
The following example exports the Diagram as a PNG image or a PDF document and saves the file to disk.
Export the Diagram as PNG or PDF
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