How to Fix PDF Showing Blue Lines and Missing Content After Creation
Question details
The user experiences visual glitches, specifically vertical blue lines, and missing portions of content in a newly created PDF document.

- Product
- PDF Creator
- Device & OS
- not provided
- Scenario
- Creating, printing, or exporting a document into PDF format.
- Observed behavior
- The resulting PDF document displays vertical blue lines and omits parts of the original text or images.
Determine exactly which application and method (such as 'Save as PDF', 'Export', or a virtual printer) you used to generate the PDF, and verify that the original source document displays correctly.
Update Your PDF Creator and Printer Drivers
Outdated or corrupted virtual printer drivers are a common cause of rendering errors like blue lines and missing text during PDF creation.
If you are using a 'Print to PDF' function, your operating system relies on a virtual printer driver to render the document. An outdated driver may incorrectly process the layout, leading to artifacts and missing content.
Navigate to your computer's 'Device Manager' or 'Printers & Scanners' settings from the Control Panel or System Settings.
Find the virtual PDF printer (e.g., Microsoft Print to PDF) or the physical printer you are using to generate the file.
Right-click the device and select 'Update driver' or 'Check for updates' to ensure you have the latest software installed.
Restart your computer and try recreating the PDF to see if the rendering issue is resolved.

Export Directly from the Source Application
If printing to a PDF causes glitches, using the native export function of your document editor often yields a flawless result.
Test Creating a PDF with a Different Document
This test helps determine if the issue is isolated to a specific corrupted source file rather than your system's PDF creator.
Create and Edit PDFs Seamlessly with WPS Office
WPS Office includes a built-in, highly reliable PDF converter and editor. You can easily export documents to PDF directly within the application without worrying about rendering errors like missing text or blue lines.
- 1. Open Your Document: Launch WPS Office and open the file you wish to convert to PDF.
- 2. Select Export to PDF: Click on 'Menu' in the top-left corner, and select 'Export to PDF' from the dropdown list.
- 3. Configure and Save: Choose your desired save location, verify the export settings, and click 'Export'. Your PDF will be generated cleanly without visual glitches.

Frequently Asked Questions
Why do vertical blue lines appear when I save as a PDF?
Vertical blue lines usually occur due to an outdated virtual printer driver, a glitch in the software's rendering engine, or incompatible formatting elements (like specific borders or shading) in the original document.
How can I recover missing content in a newly created PDF?
If content is missing in the PDF, it cannot be recovered from the PDF file itself. You must go back to the original source document, adjust the page layout or print area settings, and re-export the file.
Does changing the PDF viewer fix the missing content and blue lines?
In some cases, a third-party PDF reader might render files incorrectly. Try opening the PDF in a different application (like a web browser or WPS PDF) to check if the visual glitches are part of the file itself or just a viewer rendering issue.
Is there a difference between 'Print to PDF' and 'Export to PDF'?
Yes. 'Print to PDF' relies on a system-level virtual printer driver to process the file, which can sometimes cause rendering artifacts. 'Export to PDF' uses the application's native engine to translate the data directly, usually resulting in higher quality and a more accurate PDF.




