Grayson · Windows · Free & open source
Grayson is a zero-click, fully offline file converter. Copy anything in Explorer, tap Ctrl+Shift+Space, and a ring menu opens at your cursor with exactly the things you can do to that file. Pick a slice. That's the whole interface.
Everything runs on your machine. No upload, no account, no watermark, no conversion allowance. Output lands next to the original as name-grayson.ext and never overwrites anything.
Convert between nine formats, resize, compress, grayscale, rotate, crop, or fold a set of images into a PDF or Word doc.
Convert, compress, scale to 720p, strip audio, extract MP3 or WAV, trim and merge.
Convert between eight formats, compress, trim and merge.
Combine PDFs, split them, compress, export pages as images, or pull the text out.
To and from PDF, ODT, HTML and more. Uses LibreOffice (free, one-time install) or falls back to Microsoft Office if you have it.
grayson a.pdf b.pdf --action pdf-merge — the CLI and the ring share one engine, so behaviour is identical.
Three ways in, one way out. Whichever you pick, the file never leaves your PC.
Copy file(s) in Explorer with Ctrl+C, press Ctrl+Shift+Space. The ring opens at your cursor — click a slice or press its number.
Prefer the mouse? Drag files straight onto the small Grayson window instead.
Batch work and scripts: grayson --list prints every action, and each one takes flags like --param start=5.
Windows 10 or 11. The installer sets everything up per-user — no admin rights needed — and can be uninstalled from Settings → Apps like any other app.