Use Add Page Numbers directly in your browser. No sign-up, no watermarks, no file size limits. Your files never leave your device.
Click "Upload PDF" or drag your file onto the page.
Adjust the options for your needs — everything runs locally in your browser.
Download the result instantly. Files are processed on your device, never uploaded.
Yes — every feature of PDF Studio is 100% free, with no hidden paywalls, sign-ups, or watermarks.
No. All processing happens directly in your browser. Your PDF never leaves your device.
There is no fixed limit, but very large files (>200 MB) may slow down your browser. We recommend modern desktop browsers for best performance.
No installation required. PDF Studio runs entirely in your web browser on any device.
Modern versions of Chrome, Firefox, Safari, and Edge are fully supported on desktop and mobile.
All processing happens in your browser. Files are never uploaded.