Initializing, please wait a moment
Black Hole Square vs Alternativen
Black Hole Square loads a ~40 KB tap puzzle in an iframe. Markierte Quadrate antippen. Nach links wischen zum Ueberspringen, nach rechts zum Reset. Speichert: ftol:blackholesquare:storage. Engine MIT (Quinten/black-hole-square).
Markierte Quadrate antippen. Nach links wischen zum Ueberspringen, nach rechts zum Reset. Speichert: ftol:blackholesquare:storage. Engine MIT (Quinten/black-hole-square).
This locale guide · EN · Games
Why trust these tools
- Ten-plus years of web tooling. The freetoolonline editorial team has shipped browser-based utilities since 2015. The goal has never changed: get you to a working output fast, without an install.
- No install, no sign-up. Open a tool and get a working output in seconds - nothing to download and no account to create. Tools that need heavy processing run it on our service, so even a low-powered machine gets the job done.
- Analytics stops at the page view. We measure which pages get visited, not what you type or upload inside a tool. There is nothing to sign in to and no profile is attached to your input.
- Open-source core components. The processing engines underneath (libheif, libde265, pdf-lib, terser, clean-css, ffmpeg.wasm, and others) are public and audit-able. We link to each one in its tool page's footer.
- Free, with or without ads. All tools are fully functional without sign-up. The Disable Ads button in the header is always available if you need a distraction-free run.
Loading reviews...