About Fillhex
Fillhex is a focused toolkit for fullscreen colors, display diagnostics, and practical lighting tricks that run entirely in the web browser.
We built it for creators who need a pure black screen quickly, IT staff validating monitors, and anyone searching tela preta or black screen without installing ad-heavy apps.
The project prioritizes fast loads, clear SEO content you can edit in repository files, and bilingual en / pt-BR support for the US and Brazil.
What we provide
Solid color pages including pure #000000 black, automated slideshow tests, message display, downloads, and specialty screens like matrix and no signal simulations.
Who uses the site
Streamers, teachers, repair bench techs, photographers, and office workers on video calls all reuse the same simple fullscreen patterns.
How we make money
The site may display advertising or sponsorship in the future; core browser tools remain accessible without paywalls unless stated on specific pages.
Content and accuracy
Guides describe general display behavior; your hardware manual and warranty terms override blog-style tips when they conflict.
Open feedback
Use the contact page for bug reports, translation fixes, or tool ideas. We read user mail when capacity allows.
Privacy stance
See privacy policy for analytics and cookies. Fullscreen tools do not need account registration to function.