WebRTC has been supported in browsers for at least 10 years.
To that end you can use a website like https://www.toffeeshare.com/ to send files directly to another person via your browser via a P2P connection, without an account.
To that end you can use a website like https://www.toffeeshare.com/ to send files directly to another person via your browser via a P2P connection, without an account.