Many documents. One file. Total privacy.
Combine PDFs into one file free. Your documents never leave your device — merging happens 100% in your browser.
Many documents. One file. Total privacy.
100% in your browser — contracts, statements and IDs are never uploaded anywhere.
📄 Drop 2–50 PDF files here, or click to choose
Reorder them below with ▲ ▼ (or drag), then merge into a single PDF
🔏 A digitally signed PDF is included: its signature will not be valid in the merged file (the visible signature stays).
🔒 Up to 50 PDFs per merge; the practical size limit is your device’s memory (about 500 MB in total on a computer, less on phones). Password-protected PDFs need the password removed first.
Drop your PDFs onto the box or tap to choose them — up to 50 at a time.
Use the ▲▼ arrows to put the files in the order you want; ✕ removes one.
Press 🔀 Merge PDFs. Everything runs inside your browser — nothing is uploaded.
Press ⬇️ Download merged PDF. The file keeps its original page sizes and quality.
💡 Tip: Password-protected PDFs need to be unlocked first — the merger cannot open them.
Every popular "free PDF merger" works the same way: you upload your documents to their servers, they merge them, you download the result. That means your contracts, bank statements, medical records and ID scans travel to a company's computers and sit there — protected only by a privacy policy you didn't read.
AIMerger's PDF merger runs entirely inside your browser. Your files are combined by your own device and never touch a server — ours or anyone's. You can even load this page, switch off your internet connection, and merge; it still works. For sensitive documents, this isn't a nice-to-have. It's the whole point.
Drop your PDFs into the tool above, arrange the order with the arrows, and click Merge. Your combined PDF downloads instantly — free, no watermark, no signup.
Yes. This merger is fully client-side, so your documents are combined by your own browser and never uploaded to any server. You can verify by using it offline.
You can merge up to 50 PDFs at once, as often as you like. There is no page limit; the practical size limit is your device's memory — about 500 MB in total on a computer, less on phones. Files that can't be added (password-protected or damaged PDFs) are listed with the reason.
No catch: because merging happens on your device, it costs us nothing to run. AIMerger makes money from AI photo blending credits, and free tools like this are how people discover us.
Everything on AIMerger brings things together — here is what pairs with this one.