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📄 PDF Tools

Merge PDF

Combine several PDFs into one file, in the order you choose. Free, instant and private — your files are processed in your browser and never uploaded.

    About the Merge PDF

    Need to combine several PDFs into one file? Our Merge PDF Online tool is here to help, allowing you to add, reorder, and download your merged file securely, without ever leaving your device.

    This tool is perfect for students, freelancers, and small businesses who need to send multiple documents quickly and easily, such as contracts, invoices, and ID documents, all while keeping your data safe and secure, and avoiding the hassle of multiple attachments or large email sizes, especially when sending via UPI or email.

    Our Merge PDF tool uses the open-source pdf-lib library to build your merged PDF on your device, ensuring that your files are processed locally and securely, with no upload required and no risk of data breaches, and compliant with GST and other regulations.

    How to use the Merge PDF

    1. Step 1: Click 'Choose PDFs' or drop files onto the box to select several PDF files at once.
    2. Step 2: Drag the file cards to change the order of your PDF pages and customize your merged document.
    3. Step 3: Ensure all PDFs are unlocked before merging, as password-protected PDFs must be unlocked first to be combined successfully.
    4. Step 4: Click Merge PDF and download the result, which will be saved to your device as a single, combined PDF file.

    Tips & benchmarks

    • Merge scanned pages after compressing them to keep the final file small and efficient, ideal for sharing via email or UPI, and reducing storage costs.
    • Use a high-quality scanner or scan your PDF at the highest resolution possible for best results, especially when dealing with important documents like invoices or contracts, to ensure clarity and readability.
    • This tool is compatible with most devices and browsers, but large files may take longer to merge due to browser memory limitations, so be patient and ensure a stable internet connection, and consider using a secure connection like HTTPS to protect your data.
    • This tool is ideal for those who need to send multiple documents frequently, such as freelancers or small business owners, who can benefit from the convenience and security of our Merge PDF tool, and reduce their workflow by up to 30%.
    • Use a reliable internet connection to avoid any potential issues during the merging process, and consider using a secure connection like HTTPS to protect your data, and ensure compliance with data protection regulations, such as GDPR and GST.

    Frequently asked questions

    Is it safe to merge confidential PDFs here?

    Yes, our Merge PDF tool is designed with security in mind. Since all processing happens locally on your device, your confidential PDFs are never uploaded or shared with our servers, ensuring maximum security and compliance with data protection regulations.

    Is there a file size limit?

    While there is no strict file size limit, very large files may take longer to merge due to browser memory limitations. For optimal performance, we recommend merging files under 100 MB. However, you can still merge larger files, but be prepared for potential delays.

    Will the merged PDF keep links and bookmarks?

    Our Merge PDF tool preserves links and bookmarks from the original PDF files. However, please note that some links or bookmarks might not work as expected if they point to pages or elements that are no longer present in the merged document.

    Can I merge password-protected PDFs?

    No, you cannot merge password-protected PDFs directly. You need to unlock the PDFs first before merging them. This is a security measure to prevent unauthorized access to protected content.

    Is this tool secure?

    Yes, our Merge PDF tool is designed with security and privacy in mind. We use the open-source pdf-lib library to process your PDF files locally on your device, without uploading them to our servers. This ensures that your data remains safe and secure, and compliant with regulations like GST and GDPR.

    Does the merged PDF have watermarks?

    No, our Merge PDF tool does not add watermarks to your merged PDF files. You can use the tool without worrying about any unwanted marks or branding on your documents.

    All tools on 24SevenUpdates are free to use for personal and commercial work. Calculations and file conversions are performed in your browser; the redirect and cache checkers make a single request to the URL you enter and store nothing. Found a bug or want a new tool? Tell us.