Are my files uploaded to a server?

No. All processing happens entirely within your web browser. Your files are never uploaded to any server, guaranteeing your privacy.

Is there a file size limit?

Because the merging happens on your device, there are no artificial file size limits. However, extremely massive PDFs (e.g., hundreds of megabytes) may consume significant memory on older devices.

Does this affect the quality of my PDFs?

No, the Merge PDF tool safely extracts and combines the raw pages from your original documents without compressing or reducing their quality.

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PDF Tools

Merge PDF

Combine multiple PDF files into a single document instantly in your browser.

Last updated August 2, 2026

How to use Merge PDF

1Drag and drop multiple PDF files into the upload area.
2Alternatively, click to select multiple files from your device.
3Review the list of added files.
4Click the 'Merge & Download' button to instantly generate and download the combined PDF.

Why use this tool

100% Client-Side Processing: Your files never leave your device, ensuring maximum privacy and security.
Lightning Fast: No upload or download times required, the merge happens instantly using your computer's resources.
Unlimited File Size: No arbitrary size limits since processing is done locally.

Use cases

Organize Documents

Combine multiple invoices, receipts, or reports into a single, cohesive PDF file for easy sharing.

Consolidate Portfolios

Merge different portfolio pieces or resume pages together before sending to an employer.