Is Voidstrap safe?
Voidstrap is safe when you get it from the real repository. It is an open-source Bloxstrap fork that launches and updates the official Roblox client without modifying it. As with any strap, the code being public is what lets you trust it, and the actual risk is a fake copy from a clone site rather than the tool itself.
The pattern holds across the whole category. A Roblox bootstrapper handles launching, not the game, so nearly all of the safety question is simply where you downloaded it from.
What is Voidstrap?
Voidstrap is a fork of Bloxstrap, meaning it takes Bloxstrap's open-source base and adds its own features and defaults on top. You get the familiar launcher core, plus more toggles and options for people who like to fine-tune everything. If you have used Bloxstrap, Voidstrap will feel like home with extra rooms bolted on. That shared foundation is also why its safety story matches the original.
Why the fork itself is safe
Roblox guards its client with anti-tamper protection, and Roblox staff have said bootstrappers do not modify that protected client. Voidstrap stays inside those lines: it downloads the official files, applies FastFlags Roblox already supports, and starts the real game. Being open-source means the whole thing can be read and verified, not just claimed. That is the difference between a fork you can check and a shady binary you cannot.
Where the danger actually is
Forks get reuploaded constantly, and that is where malware sneaks in. A site or video that looks official but hosts its own installer can slip extra code into an otherwise trustworthy tool. The real Voidstrap on GitHub is safe; a random mirror is a coin flip. Antivirus flags on the genuine build are usually false positives from the launcher touching game files, but a flag on an off-site download deserves to be taken seriously. Stick to the source and you are fine.