Stream your game in 4K to friends – free, direct & no account

You want your friends to see your game in actual good quality – not as a blurry, stuttering mess? Lumora streams your game in up to 4K at 60 fps straight to any browser. No subscription, no sign-up, no server in between.

⬇ Download Lumora for free

For Windows 10 & 11 · no registration · open source

Lumora stream tab: live preview, viewer list and bitrate settings while sharing your screen

How it works

  1. Start streaming: pick a game window or screen, one click (or a hotkey mid-game) – done. Connection setup is automatic; the public link is ready in about two seconds.
  2. Send the link: “Invite friends” copies the invite link for the whole crew. Viewers simply open it in a browser; friends running Lumora join the group from the same link with one click and stream their own game back.
  3. Watch in the browser: PC, tablet or phone – viewers only need the link. No install, no account. The group view shows everyone in a grid; a tap picks whose audio you hear.

Why the quality is this good

  • Up to 4K / 60 fps / 25 Mbit/s constant – encoded by your GPU's hardware encoder (NVIDIA, AMD, Intel). Your game barely loses any performance.
  • Direct connection (P2P): video and audio go straight from your PC to the viewer. No vendor server that recompresses your stream.
  • Adaptive bitrate: if a viewer's connection weakens, Lumora steps the bitrate down – and back up once things stabilize. No constant stuttering, no manual tweaking.
  • Game-only audio: sharing a single window transmits only that game's sound – private music, calls and notifications stay out.
  • HDR games are converted properly, so viewers without HDR displays see correct colors.
  • No router fiddling: automatic port setup (UPnP), IPv6 direct path for DS-Lite/CGNAT connections, optional custom TURN server – all built in.

Groups: play together, watch each other

One click on “Invite friends” on a running stream creates the group and copies the invite link. Anyone opening it with Lumora joins instantly via “Join with Lumora” – their own stream starts along automatically, and your own PCs on the same network even detect the group by themselves. No typing codes. Anyone without a PC opens the same link in a browser (works on iPhone too) and sees all streams side by side in a grid: fullscreen or spotlight per click, audio and volume per person, the whole grid as picture-in-picture, live stats on demand. The group doesn't depend on anyone – whoever leaves, leaves; everything keeps running for everyone else.

Frequently asked questions

What do my friends need?

Just a browser. Open the link, watch – with sound, fullscreen if they like. No app, no account.

How much delay does the stream have?

Typically under a second, thanks to the direct connection (WebRTC). The receive buffer is adjustable: short for minimal delay, longer for maximum smoothness on shaky connections.

How many viewers can watch?

Honest answer: your internet upload is the limit, because every viewer receives the stream directly from you (bitrate × viewers). Ideal for your circle of friends – for hundreds of viewers, platforms with distribution servers are the right choice.

What does it cost?

Nothing. No ads, no subscription, no quality paywall. Lumora is free and open source.

⬇ Download & try it now

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