Thinkforu.org Advanced PDF Merger - Combine PDF Files Online

Thinkforu.org PDF Merger

Combine multiple PDF files into one document with our free online tool

Drag & Drop PDF Files Here

You can merge up to 90+ PDF files/Documents at Once

Merge Options

Output Filename

Page Size

Page Orientation

Add bookmarks for each file

Compress output file

Processing files...

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User Guide: How to Merge PDF Files

Select Your PDF Files

Click the "Browse Files" button or drag and drop your PDF files into the upload area. You can select multiple files at once from your device.

Arrange Your Files

Once uploaded, you can rearrange the order of your PDF files by using the up and down arrows. The files will be merged in the order they appear in the list.

Customize Merge Options

Set your preferred options for the merged document, including output filename, page size, orientation, and whether to add bookmarks or compress the output file.

Merge Your PDFs

Click the "Merge PDFs" button to combine your files. The tool will process your files and create a single PDF document containing all the pages from your selected files.

Download Your Merged PDF

Once the merging process is complete, click the "Download" button to save the merged PDF to your device. Your files are processed entirely in your browser for complete privacy.

Frequently Asked Questions

Is this PDF merger tool free to use?

Yes, our PDF merger tool is completely free to use with no hidden costs or limitations. You can merge as many PDF files as you need without any restrictions.

Is my data secure when using this tool?

Absolutely! Our PDF merger processes all files directly in your browser. Your files are never uploaded to any server, ensuring complete privacy and security of your documents.

How many PDF files can I merge at once?

You can merge up to 100 PDF files at once with our tool. For optimal performance, we recommend merging fewer files if they are very large in size.

Will the merged PDF maintain the quality of the original files?

Yes, our tool maintains the original quality of your PDF files during the merging process. Unless you choose the compression option, there will be no loss in quality.

Can I merge password-protected PDF files?

Currently, our tool cannot process password-protected PDF files. You'll need to remove the password protection from your files before merging them.

What happens if my PDF files have different page sizes?

By default, our tool preserves the original page sizes of each file. However, you can choose to standardize all pages to a specific size (A4, Letter, etc.) using the page size option.

Can I use this tool on my mobile device?

Yes, our PDF merger is fully responsive and works on all devices including smartphones and tablets. The interface adapts to your screen size for optimal usability.

Is there a file size limit for the PDFs I can merge?

Since all processing happens in your browser, the file size limit depends on your device's memory. Generally, files up to 100MB each should work without issues on most devices.

PDF Merger