Merge PDF – No Cookies But Coffee

The tool single-file • offline-capable

Step 1 — Add PDFs

Drag & drop PDF files here, or click “Choose files”.

Step 2 — Merge

Tip: drag the handle ≡ to reorder.

Ready. Add at least 2 PDF files to merge.

Privacy

This tool processes files locally in your browser. Your PDFs are not uploaded anywhere. If this page is hosted, the server will still see normal web requests (like any site), but the PDF content is never sent.

What this does No fluff

Merges PDFs Combines pages from multiple PDFs into one file.

Keeps quality Pages are preserved as-is (no rasterizing).

Offline-capable Works without internet once loaded.

No tracking No cookies, no analytics, no third-party scripts.

Limits (reality check):
PDF merging in pure JavaScript is memory-heavy. If you try to merge very large files, your browser may run out of memory or crash. Start small. If you need huge merges, do it on a desktop tool.

JS: enabled • File API: ?

What this tool does NOT do

No compression, no optimization, no editing.
No cloud processing, no accounts, no storage.
No “free trial” traps.

Technical note (why this is hard without dependencies)

Brutal truth: merging PDFs correctly requires understanding the PDF format (objects, xref tables, streams, compression, fonts, etc.). Doing that from scratch in a single HTML file with zero dependencies is possible, but it becomes a full PDF library — thousands of lines, easy to get wrong, and a maintenance trap.

So this page uses a minimal, self-contained PDF merger implemented below. It supports common PDFs, but it is not a full Acrobat replacement. If a PDF uses uncommon features (incremental updates, object streams with edge cases, xref streams, certain encryption, rare filters), it may fail — and it will tell you plainly.

If you want “industrial-grade,” the right move is to allow one vetted dependency (e.g., a local copy of a mature PDF library). But you asked for zero dependencies, so you get the honest compromise.