A4Share.PRO (also written A4Share or Air4Share) is a lightweight web application for instant file sharing, clipboard sync, and note sharing between devices on the same network. It was built as a free alternative to paid tools like AirForShare, without a subscription, an account, or a login screen standing in the way.
The idea is simple: open A4Share.PRO on your phone, tablet, or computer, and every other device on the same Wi-Fi network automatically joins the same private space. Drop a file, type a note, or paste something to the clipboard, and it's instantly available everywhere — no room codes, no email, no waiting for uploads to finish before you can grab them on another screen.
Why we built A4Share
Most "airforshare" and file-transfer tools lock basic features — clipboard sync, notes, cross-device transfer — behind a paywall. A4Share exists to offer online file sharing free of charge, with the same convenience, for anyone who just needs to move a file from one device to another without friction.
How it's different
- No account, ever. Your space is created automatically from your network, and nothing is asked of you.
- Auto-expiring. Everything you share is deleted automatically after a short period of inactivity, so nothing lingers on our servers.
- Free forever. File sharing, clipboard sync, and notes are all free — no premium tier.
- Cross-platform. Works from any browser on Android, iPhone, Windows, macOS, or Linux, plus a free Android app.
Who runs A4Share.PRO
A4Share.PRO is developed and maintained by Brightmark Digital. If you have questions, feedback, or a bug to report, visit our Contact page.