Open VSPIC Merge PDF, add each PDF from your computer, drag files into the desired order, and click merge. The tool concatenates page streams inside your browser using JavaScript PDF libraries — no license, no Creative Cloud subscription, no desktop install. This is ideal for students joining lecture handouts, HR teams compiling onboarding packets, and freelancers delivering multi-part proposals. The merged download is a standard PDF readable anywhere.

Yes. VSPIC preserves each page’s original dimensions when combining files, so a Letter appendix can follow an A4 report without forced scaling. Viewers like Adobe Reader display mixed sizes correctly when printing or scrolling. If you need uniform dimensions for print production, run individual files through a resize workflow first or print-to-PDF with consistent settings. For most business and academic uses, preserving native sizes is preferable to accidental cropping.

VSPIC does not cap the number of input files for free users. Practical limits come from device memory — merging twenty small PDFs on a phone works fine, while merging fifty scanned books may require a desktop with ample RAM. If you hit performance issues, merge in batches and combine the resulting files in a second pass. Local processing means no server-side queue or premium tier unlocking higher limits.

Merge PDF concatenates existing pages without re-encoding embedded images, so visual quality remains identical to the sources. Unlike some online tools that re-render pages and introduce compression artifacts, VSPIC’s local merge respects original streams. Password-protected inputs may need unlocking first with our Unlock PDF tool. If file size grows too large after merging, follow up with Compress PDF rather than risking quality during the merge itself.

Yes. Drag-and-drop ordering lets you place an exhibit PDF between report sections or sandwich a cover page before and after main content. Thumbnail previews help verify sequence before you commit. This flexibility supports legal binders, course packets, and architectural drawing sets where order matters as much as content. Reorder as many times as needed before downloading the final combined document.

No. Files are read into browser memory and merged locally. VSPIC’s privacy model assumes your documents may contain trade secrets, personal data, or sealed evidence. Keeping bytes off remote disks is a core product principle shared across all PDF tools on vspic.com. You can verify this by disconnecting the network after the page loads — merging still completes because no API call sends PDF content outward.

Remove passwords first using Unlock PDF if you have the correct credentials, then add unlocked files to the merge queue. Attempting to merge encrypted streams without decryption usually fails or produces unreadable output in any tool. After merging, re-apply protection with Protect PDF if the combined document needs a new password before distribution to clients or counsel.

Collect monthly PDF invoices in a folder, multi-select them in VSPIC Merge PDF, sort chronologically by dragging filenames or thumbnails, and download one consolidated file for your bookkeeper. Because everything stays local, you avoid uploading sensitive financial records to unknown cloud services. Add page numbers afterward with Add Page Numbers PDF if your accountant requires consistent numbering across the combined packet.