Merge PDF Files Online

No, our PDF merger maintains the original quality of your documents. We use a lossless merging process that preserves:

• Text sharpness and readability
• Image quality and colors
• Document formatting and layout
• Interactive elements like hyperlinks (when possible)
• Metadata (unless you choose to modify it)

The merged PDF will have the same quality as your original files. However, note that if your original files have different page sizes or orientations, they will retain these differences in the merged document unless you standardize them beforehand.

Our free PDF merger supports individual files up to 100MB each, with a total limit of 500MB for all files combined in a single merge operation. These limits accommodate most common PDF merging needs.

For larger files, we recommend:

• Compressing your PDFs before merging (you can use our PDF compression tool)
• Splitting your merge into smaller batches
• Removing unnecessary images or content from your PDFs to reduce file size

We take data security and privacy extremely seriously. Our PDF merger is designed with multiple layers of protection:

• Secure file transfer: All uploads and downloads use encrypted HTTPS connections.
• Temporary processing: Your PDF files are stored only for the duration of the merging process in a secure, isolated environment.
• Automatic deletion: All uploaded PDFs and generated files are permanently deleted from our servers immediately after merging or download, typically within an hour and never longer than 24 hours.
• No content analysis: We don't scan, analyze, or use the content of your documents for any purpose other than the merging you've requested.
• No account required: Our service requires no registration or account creation, minimizing the personal data we handle.

Our PDF merger can handle PDFs with user passwords (the type needed to open the document), but you'll need to remove the password protection before uploading. For security reasons, we don't ask for these passwords on our service.

Documents with permission restrictions (owner passwords) that still allow opening but restrict actions like printing or copying can usually be merged without issues, but some protection features may be lost in the merged document.

To merge password-protected PDFs, we recommend:

1. Remove password protection from your PDFs using your PDF reader application
2. Upload the unprotected files to our service
3. Remove password protection from your PDFs using your PDF reader application
4. Upload the unprotected files to our service
5. Merge the documents
6. If needed, add a new password to the merged document after downloading