File encryption with a browser.
I've been exploring the #WebCryptoAPI and I'm impressed!
When combined with the #FileSystemAPI, it offers a seemingly secure way to #encrypt and #store files directly on your device. Think #localstorage, but with #encryption!
I know #webapps can have #security vulnerabilities since the code is served over the web, so I've #OpenSourced my demo! You can check it out, and it should even work if #selfhosted on #GitHubPages.
Live Demo: https://dim.positive-intentions.com/?path=/story/usefs--encrypted-demo
Demo Code: https://github.com/positive-intentions/dim/blob/staging/src/stories/05-Hooks-useFS.stories.js
Hook Code: https://github.com/positive-intentions/dim/blob/staging/src/hooks/useFS.js
IMPORTANT NOTES (PLEASE READ!):
* This is NOT a product. It's for #testing and #demonstration purposes only.
* It has NOT been reviewed or audited. Do NOT use for sensitive data.
* The "password encryption" currently uses a hardcoded password. This is for demonstration, not security.
* This is NOT meant to replace robust solutions like #VeraCrypt. It's just a #proofofconcept to show what's possible with #browser #APIs.
CleoQc 
Learn how to close down and wind up an API without making a mess of it all in this post by me. Avoid surprising your customers with these simple communication and monitoring methods. 
Mike Amundsen