Support the site
Everything here is free and stays free. The most useful thing a visitor can do costs nothing and is at the top; the addresses are further down for anyone who wants to leave something.
The free ways, first
The site has no advertising budget and does no promotion; it exists in search results only as far as other pages point at it. One link from a forum answer, a wiki, a subreddit sidebar or a blog post does more for it than any tip, and it is the one thing a visitor can give that we cannot buy.
Link to a test
Answering a forum thread, writing a wiki, settling an argument — these are the pages people link to. Copy the address.
- Dead pixel test
https://testsweep.com/dead-pixel-test - Stick drift test
https://testsweep.com/stick-drift-test - Mouse double click test
https://testsweep.com/mouse-double-click-test - Checking a used laptop
https://testsweep.com/check-used-laptop - Monitor flickering — cable, card or monitor?
https://testsweep.com/monitor-flickering
Share the site
One post reaches more people than the site can on its own.
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Leave a tip
If a test settled something for you and you would like to leave something, the addresses below are ours. Crypto only, because the site's owner is a sole trader in Kyrgyzstan and the usual card processors do not operate there. Every address has been checked structurally before publication, and each QR code is generated here and served from this site — never fetched from anyone else — so what you scan is what is printed.
Read this before sending. Each address takes only the assets listed beside it, only on the network named beside it. A transfer on the wrong network cannot be reversed by anyone. Send a small amount first.
USDTTRON (TRC-20)TTYkkhf3Pbc3Vw8h8wt2Y1uEGfxmT1TcL6Send USDT on TRC-20 only — nothing else, on no other network.
SOL, USDTSolana (SPL)He8CCQNSxyeGTiBG1EwxjbfNnQJndYB58jY15fBezyLXSend SOL, USDT on Solana only — nothing else, on no other network.
ETH, USDT, USDCEthereum (ERC-20)0x80cda3f917b5cb07217bacc5d81605d406cbcfb8Send ETH, USDT, USDC on ERC-20 only — nothing else, on no other network.
Where it goes
Hosting, the domain and the tooling are cheap and are not what tips pay for. What costs is time: every test here is built and checked by hand, and every page is written rather than generated. Tips go towards more of that — new tests, the ones in theroadmap, and re-checking the existing ones as browsers change underneath them.
Please read
- Tipping is voluntary and buys nothing. Every test is free, stays free, and no feature is unlocked by paying. Do not send anything you would miss.
- Transfers cannot be reversed. A crypto transaction sent to the wrong address or on the wrong network is gone, and nobody — not us, not an exchange — can get it back. Send a small test amount first, confirm it arrived, and only then send the rest.
- Match the network exactly. Each address accepts only the assets listed beside it, only on the network named beside it. On an exchange, the network is a separate choice from the asset — pick the one printed here.
- Tax. In a number of countries, giving cryptocurrency is a taxable event for the giver. Check your own rules before sending anything of size.
- These are the only addresses. They are published here and nowhere else, we will never ask for a tip by email, and a message asking you to send funds anywhere else is not from us. Questions: [email protected].