A set of utilities for working with PDF files right in the browser: merge several into one, extract specific pages, stamp a watermark and check the document's information. Everything is processed in your browser: files are not uploaded to any server. Each function lives in its own tab.

1. Pick the tab for what you want to do (Merge, Extract, Watermark or Information).
2. Click Select PDF (or Add PDFs when merging) and choose your files.
3. Adjust whatever the operation needs (page range, watermark text…).
4. Click the Download button and the result is saved to your device.
The source PDF is not modified: a new file is always generated.

Combines two or more PDFs into a single document.

• Click Add PDFs (you can select several at once or add them one by one).
• They appear in a list; use the ✕ to remove the ones you don't want.
• They are merged in the same order they appear in the list.
• The button enables from 2 files onward; clicking Download merged PDF gives you merged.pdf.

All processing happens locally in your browser: PDFs are never uploaded to any server and never leave your device. Once the page has loaded you can use the tool offline. Files only stay in memory while the tab is open.

• Files must be valid PDFs; encrypted or password-protected documents may fail to load.
• Since the work is local, very large files depend on your device's memory.
• Each operation creates a new PDF; the original is left untouched.
• Each tab works on the file you load into it; changes do not accumulate across tabs.