Combine PDF files on Windows 10 and 11 in Microsoft Edge, Chrome, or Firefox — no Acrobat, no PDFsam install, no upload to a server. Windows has no native PDF merger, so a browser tool fills the gap. Drop the files, drag thumbnail cards to reorder, download the merged PDF. Free and private.
vastiko.com/merge-pdf/.Windows has no built-in merger, so the choice is between a desktop app and a browser tool.
Edge opens and annotates PDFs but has no merge feature. You cannot combine two PDFs with Edge alone. Edge can, however, run this browser tool — which is the simplest path on Windows.
$19.99/month. Industry standard with Combine Files, OCR, redaction, and bookmark merging. Heavy install (~1 GB) and a paid subscription — overkill if you merge PDFs occasionally.
Free, open-source, runs locally. Genuinely private. Java-based desktop install, ~100 MB, needs the Java runtime updated. Good for weekly merging workflows; a lot to install for one combine.
Free tiers with merge features. PDF24 in particular is Windows-native and free. Ad-supported or upsell-heavy; some bundled offers during install. Fine if you already use them.
Free in the browser but files are uploaded to their servers. Not ideal for invoices, medical records, or contracts. Free tier limits file size and daily count.
Browser-based, local merge with visual thumbnail reorder. Free, no signup, no watermark. Right for one-off Windows merges without installing a desktop app or uploading files.
| Operating system | Windows 10 (version 1809 or newer), Windows 11 — 32-bit or 64-bit |
|---|---|
| Browser | Edge 100+, Chrome 100+, Firefox 100+, Brave, Opera, Arc |
| RAM | 4 GB free for typical merges; 8 GB free comfortable for 20+ files |
| Install needed | None — the tool is a web page |
| Account needed | None |
| Network | Only to load the page. Merging itself is offline after the tool is cached. |
| Max files / size | No artificial cap. Practical ceiling ~200 MB combined on modern PCs. |
Drop a set of PDFs to start. Works in any modern Windows browser.
Open the PDF merger on Windows
Edge, Chrome, Firefox — all supported.
No. Unlike macOS Preview, Windows has no native PDF merger. Microsoft Edge's built-in PDF viewer can open and annotate PDFs but offers no combine feature. Windows Photos does not convert or merge PDFs. To combine PDFs on Windows you need a third-party app or a browser tool — that is exactly the gap this page fills.
Yes — by opening a browser-based merger. Edge itself has no merge button, but it can run this tool perfectly. Go to vastiko.com/merge-pdf/ in Edge, drop the PDFs from File Explorer, reorder, and download. Nothing installed, nothing uploaded.
PDFsam Basic is free, open-source, and runs locally — good for privacy. Downsides: it is a Java-based desktop install (~100 MB), the UI feels dated, and you need to keep the Java runtime updated. Perfect if you merge PDFs weekly. Overkill if you need to merge a few PDFs once a month; a browser tool is a smaller commitment.
Yes. The output is a standard PDF 1.7 file — compatible with Microsoft Edge's viewer, Adobe Acrobat Reader, Chrome's built-in viewer, SumatraPDF, Foxit, and any other PDF reader on Windows. Fonts, images, and form fields from the source PDFs are preserved without re-encoding.
No. The merge happens entirely in the browser's JavaScript memory using pdf-lib. Open Edge's DevTools (F12) > Network tab while merging — you will see zero outbound requests. Close the tab and nothing remains.