Download
Get Emifyn.
Free, with nothing kept back for a paid version. It installs just for your account, so Windows won’t ask you for an administrator password.
Windows 10, Windows 11 · 64-bit
EmifynSetup-0.1.1.exe
From the Microsoft Store
No warnings, and it keeps itself up to date. This is the easy way.
Direct download
The installer, straight from here, no Store account involved. Windows will warn you about it — there’s a section below on why, and how to check the file.
- Version
- 0.1.1
- Released
- 09 SEPT 2026
- Download size
- 124 MB
- Space needed
- ≈ 350 MB
- Installs to
- %LOCALAPPDATA%
- Licence
- AGPL-3.0-or-later
It’s a big download, and there’s no way round that. Most of it is the PDF engine and the toolkit the window is built from, and the engine is rather the point of the program.
What you need
- Windows 10 or 11, 64-bit.
- No administrator rights. It goes into your own user folder.
- About 350 MB of disk space once it’s installed.
- No account and no internet connection to use it.
What the installer does
- Puts the program in your local applications folder and adds a Start menu entry.
- Offers to open
.pdffiles by default. It won’t take that over unless you tick the box. - Updates an existing copy in place, keeping your settings and your recent files.
- Uninstalls from Settings → Apps like anything else, without leaving bits behind.
Only if you take the direct download
Windows is going to warn you about this file.
None of this applies if you install from the Microsoft Store. Microsoft signs the package themselves, so there’s no warning at all — which is exactly why that’s the button I’d point most people at. What follows is about the direct download.
When you run the installer you’ll probably get a big blue screen saying “Windows protected your PC”, with the button you actually want tucked away behind a More info link. Your antivirus might grumble about it as well.
That isn’t a sign there’s anything wrong with the file. It happens because the installer isn’t code-signed. A certificate costs a few hundred pounds a year, plus a hardware key to keep it on, and even once you’ve bought one the warning only fades as more people install it over time. It’s the first thing any donations would go towards.
I’d much rather warn you about this than let you meet it cold. And if you’d rather not click past a security warning at all — which is a perfectly sensible instinct — the Microsoft Store version is signed by Microsoft and won’t show you one.
If you want to carry on
Click More info on the blue screen.
Check the file name is the one shown on this page. Windows will say the publisher is unknown — that’s what unsigned means, and it’s expected.
Click Run anyway.
Some work machines block unsigned installers outright and no amount of clicking will get past it. That’s your IT policy doing its job, and there’s nothing I can do from here.
That cost you nothing.
If it ends up saving you a subscription there’s a tin by the door, and a couple of ways to help that don’t involve money at all.