Who makes ScreenWhite?
ScreenWhite is built and maintained by one developer as a small independent project. There is no company behind it and no investor.
It exists because the tools already ranking for these searches were slow, covered in advertising, or asked for an account to download a solid colour. None of that is necessary, so this one does without it.
How are the tools built?
Server-rendered HTML with no framework, one stylesheet and small vanilla JavaScript modules. The home page is about six kilobytes compressed.
Every page is readable without JavaScript; the interactive parts — fullscreen, the sliders, the wake lock and downloads — need it. Image downloads are generated on request rather than stored, using a PNG encoder written from scratch so the server needs no image library. The white screen page sets out the specifics.
What data does ScreenWhite collect?
Anonymous aggregated usage only. No accounts, no personal data, no advertising trackers, and nothing you generate is stored anywhere.
Analytics record page views and a single event when a tool is actually used, which is what shows whether a page is useful rather than merely visited. Colours you pick and images you download never leave your device except as a request for a file, and that file is generated and discarded.
How are factual claims on this site checked?
Every factual claim is traced to a primary or authoritative source. Anything that cannot be sourced is rewritten or removed rather than left standing.
Display and colour claims here link to standards documents, manufacturer technical pages and published research — ITU-R BT.709 for luminance, the National Park Service on dark adaptation, Apple on pixel anomalies. Several claims that appear widely elsewhere were cut during that process because no authoritative source supports them.
Where something is genuinely uncertain the page says so. The stuck-pixel fix on the dead pixel test page is the clearest case: widely repeated, endorsed by no manufacturer, so the page says exactly that.
How do you report something that is wrong?
Corrections are welcome and get applied. If a claim here is wrong, or a source does not support it, that is treated as a bug.
Every page carries a last-updated date so you can see when it was last reviewed.
