Merge PDF Online – Combine Multiple PDF Files Privately

How to Merge PDF Files?

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1. Upload PDFs

Select multiple PDF files from your device. You can pick them all at once or add them in sequence.

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2. Verify List

Check the file list in the workspace to ensure all documents are present and ready for binding.

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3. Instant Merge

Click "Merge & Download". Our tool joins the pages locally and exports the final document result.

Why Use Our Online PDF Merger?

Combining PDF documents shouldn't mean sacrificing your privacy. Most online tools require you to upload sensitive contracts, IDs, or financial reports to a remote cloud server. Our Merge PDF tool utilizes modern WebAssembly and JavaScript technology to process your files directly on your own computer. This means your data never leaves your browser, providing the highest level of security available today.

Lossless Quality and Perfect Formatting

When you merge PDFs with ImageResizze, we don't just "stitch" images together. Our engine preserves the underlying vector data, original fonts, and structural integrity of every page. Whether you are combining high-resolution architectural plans or simple text documents, the output remains searchable and perfectly clear. It is the ideal solution for creating digital portfolios, academic submissions, or consolidated business reports.

Frequently Asked Questions

Is there a limit on how many PDFs I can merge?

There are no artificial limits. You can combine 2 files or 20. The only limit is your device's memory, as all processing happens locally.

Will my files be stored on your server?

No. We never see your files. The merging happens in your browser's RAM and is downloaded directly to your disk. Once you close the tab, all data is gone.

Does this work on mobile phones?

Yes! Our tool is fully responsive and works on Chrome, Safari, and Firefox across iPhone, Android, and Desktop devices.