1) Local processing. When you select a file, the tool reads it in your browser and performs the requested action (merge, split, rotate, or image conversion). Your files are not uploaded to our servers.
2) Output download. After processing, a new PDF is generated in your browser and a download starts automatically.
3) Memory limits. Very large files require more RAM. If a file is too large, the browser may slow down or fail to finish the task.
Because all work happens in the browser, your documents stay on your device. This is useful when you need to process personal or confidential files.