Stirling PDF

Stirling PDF is a self-hosted toolbox for the everyday PDF chores that otherwise send you to a website uploading private files. It merges, splits, rotates, crops and reorders pages, converts PDF to images or office formats, adds or removes watermarks and passwords, compresses files, and runs OCR to make scans searchable, all through a browser interface you can also drive over an API.

Teams use it for invoices, reports and redacted documents before sharing, keeping sensitive files off third-party servers.

Running it yourself means nothing is uploaded elsewhere, there is no per-task fee, and the application and its configuration are yours to back up.