Do I need a PDF reader app installed?

No — this renders the PDF directly in your browser tab using the same engine that powers every other tool here.

Is the file uploaded anywhere to be displayed?

No. It's read into your browser's memory and rendered locally — nothing is sent over the network.

Not in this tool — it's read-only viewing. For adding a signature, watermark, or page numbers, use the matching tool instead.

Open and page through a PDF right in this tab — no download, no account, and nothing ever uploaded.

Processed on your device

Drop a PDF here, or click to browse

Nothing is uploaded — the file only ever exists in this tab.

Sign PDF

Draw or type a signature and place it on a PDF page.

Watermark PDF

Stamp translucent text across every page, at a size and opacity you set.

OCR PDF

Turn a scanned PDF into one you can search, select, and copy text from.