PDF & DOCUMENT WORKSPACE
CTRL
For people who need deeper control over PDFs and documents on mobile, web, and Windows.
- Edit and add PDF text
- Sign documents
- OCR and searchable PDFs
- Merge, extract, convert, optimize
- Sanitize and privacy-focused tools
THE HOUSE OF RARE FREQUENCY
Software with a purpose.
Rare Frequency Works is an independent software house building focused tools for real work. Each product and tool solves a focused problem while sharing the same standard: clear, polished, useful software.
FREE TOOL LAB
Small task? Use a free browser tool.
Resize, compress, convert, crop, remove metadata, create PDFs, and more — no account required.