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How to Combine Multiple PDF Files into One Document
Updated 2026-02-18Verified Private
Whether you're submitting a job application or organizing monthly receipts, having one clean PDF is always better than ten messy ones.
Why is this needed?
Email systems and application portals often limit the number of files you can upload. Merging solves this instantly.
!Step-by-Step Instructions
1
Upload your PDFs
Drag all the files you want to combine. You can upload up to 20 files at once.
2
Rearrange the Order
Drag and drop the file thumbnails to put them in the exact order you need.
3
Merge and Download
Click 'Merge' and Tulz will generate a single download link for your unified document.
Pro Tips
- •You can merge PDFs of different sizes (A4 and Letter) - Tulz handles the layout scaling automatically.
- •Check the total size after merging; larger documents might need [Compression](/tools/pdf-compress).
Frequently Asked Questions
Is there a limit to how many pages I can merge?
We support documents up to 500 total pages. For extremely large files, processing may take a few extra seconds.
Will the quality drop?
No. Our merger preserves the original quality of every page.