Unidentical PDF Rendered with Chrome Print Preview

Curtis Chau

Updated: June 24, 2026

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  # Unidentical PDF Rendered with Chrome Print Preview PDFs generated by IronPDF look visually different from PDFs produced by Chrome's built-in Print Preview function, even when both render the same HTML. IronPDF bundles a specific version of the Chromium Embedded Framework (CEF), while Chrome Print Preview uses a different (typically newer) CEF build. Some CSS features and rendering behaviors supported by the newer CEF in Chrome Print Preview are not yet supported in IronPDF's bundled version. ## Solution ### Option 1: Switch to IronPdf.UpdatedChrome The `IronPdf.UpdatedChrome` NuGet package includes a newer CEF build with expanded CSS feature support: ```shell :InstallCmd Install-Package IronPdf.UpdatedChrome ``` This resolves CSS compatibility gaps between IronPDF's default renderer and Chrome Print Preview. ### Option 2: Add a render delay for assets that load slowly If images, drawings, or other elements fail to appear in the output, the assets may not have finished loading before rendering begins. Add a delay: ```csharp var renderer = new ChromePdfRenderer(); renderer.RenderingOptions.WaitFor.RenderDelay(3000); ``` Adjust the delay value in milliseconds based on how long your assets take to load. If the issue persists after both options, contact Iron Software support with your sample HTML, IronPDF version, OS and .NET version, log file, and code snippet.

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PDFs generated by IronPDF look visually different from PDFs produced by Chrome's built-in Print Preview function, even when both render the same HTML.

IronPDF bundles a specific version of the Chromium Embedded Framework (CEF), while Chrome Print Preview uses a different (typically newer) CEF build. Some CSS features and rendering behaviors supported by the newer CEF in Chrome Print Preview are not yet supported in IronPDF's bundled version.

Solution

Option 1: Switch to IronPdf.UpdatedChrome

The IronPdf.UpdatedChrome NuGet package includes a newer CEF build with expanded CSS feature support:

Install-Package IronPdf.UpdatedChrome

This resolves CSS compatibility gaps between IronPDF's default renderer and Chrome Print Preview.

Option 2: Add a render delay for assets that load slowly

If images, drawings, or other elements fail to appear in the output, the assets may not have finished loading before rendering begins. Add a delay:

var renderer = new ChromePdfRenderer();
renderer.RenderingOptions.WaitFor.RenderDelay(3000);

var renderer = new ChromePdfRenderer();
renderer.RenderingOptions.WaitFor.RenderDelay(3000);

Dim renderer = New ChromePdfRenderer()
renderer.RenderingOptions.WaitFor.RenderDelay(3000)

Dim renderer = New ChromePdfRenderer()
renderer.RenderingOptions.WaitFor.RenderDelay(3000)

Adjust the delay value in milliseconds based on how long your assets take to load.

If the issue persists after both options, contact Iron Software support with your sample HTML, IronPDF version, OS and .NET version, log file, and code snippet.

Curtis Chau

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Technical Writer

Curtis Chau holds a Bachelor’s degree in Computer Science (Carleton University) and specializes in front-end development with expertise in Node.js, TypeScript, JavaScript, and React. Passionate about crafting intuitive and aesthetically pleasing user interfaces, Curtis enjoys working with modern frameworks and creating well-structured, visually appealing manuals.

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