Remove Blank Pages from PDF

Tool Introduction

"Remove Blank Pages from PDF" is a free online tool designed for users to clean up redundant blank pages in PDF documents. Whether it's scanned documents, merged files, or exports from other applications, PDF files often contain unnecessary blank pages. This tool uses intelligent algorithms, allowing you to customize two key parameters, "Threshold" and "White Percentage", to accurately identify and remove these blank pages, making your PDF documents tidier, smaller in file size, and providing a smoother reading experience.

How to Use

1. Upload PDF File: Click the "Upload PDF" area and select the PDF file you need to process. Please note that currently only a single PDF file can be uploaded, and the file size cannot exceed 20MB.
2. Set Detection Parameters:
   • Threshold: Enter a number, the default value is 10. This parameter is used to define the sensitivity of blank page detection; a lower threshold may make it easier to identify nearly blank pages as blank pages. You can adjust it according to your PDF content to get the best results.
   • White Percentage (%): Enter a percentage number, the default value is 99.9. This parameter specifies the proportion of white area required for a page to be considered a "blank page". For example, setting it to 99.9% means that at least 99.9% of the area on the page must be white to be identified as a blank page.
3. Start Processing: After confirming that the file and parameter settings are correct, click the "Merge" button (the "Merge" here should be understood as "Process" or "Convert"). The tool will automatically start identifying and deleting blank pages in your PDF.
4. Download Results: After processing is complete, you will see the original file information and a download link for the new processed file in the results area. Click the "Download" button to get the PDF file with blank pages removed.

Frequently Asked Questions

• Q: What file formats does this tool support?
• A: This tool currently only supports PDF (Portable Document Format) files as input.
• Q: What format is the processed file?
• A: The processed file is still in PDF format.
• Q: Is there a size limit for uploaded PDF files?
• A: Yes, a single PDF file can be up to 20MB. If your file exceeds this limit, please consider compressing it first.
• Q: How to accurately identify blank pages?
• A: The tool primarily relies on the "Threshold" and "White Percentage" parameters for judgment. You can adjust these two parameters according to the characteristics of your PDF content to achieve the most accurate blank page identification. For example, for pages containing light watermarks or a small amount of text, you may need to fine-tune the "White Percentage" to avoid accidental deletion.
• Q: Will removing blank pages affect other content in the PDF file?
• A: This tool only deletes identified blank pages and will not cause any changes or loss to other valid content in the PDF file.

Notes

• File Format Requirements: Please ensure that the file you upload is in standard PDF format; non-PDF files cannot be processed.
• File Size Limit: The uploaded file size cannot exceed 20MB. For large PDF files, it is recommended to split or compress them first.
• Parameter Adjustment: The "Threshold" and "White Percentage" parameters are crucial for the accuracy of blank page detection. It is recommended to carefully adjust these parameters based on your document content before processing, especially when the PDF contains images, charts, or special backgrounds. Default values may not be suitable for all situations.
• Privacy and Security: Your files will be uploaded and processed in a secure environment. After processing, the files will be automatically deleted from the server after a certain period. Please download your result files promptly.
• Result Preview: Currently, this tool does not provide a page preview function before and after processing. It is recommended to manually check the processing results after downloading.