Disclaimer

Output on this site is for checking, learning, and troubleshooting. It is not legal, security, tax, lending, or investment advice. It does not certify that hardware is fit for a purpose or that a file is safe.

You are responsible for confirming a result in the system that actually matters (your build, your vendor checksum, your records).

A digest matches only if the bytes and options match: input encoding, HMAC and key, and hex vs Base64 output. MD5 and SHA-1 are shown because people still need to match old checksums. They are not recommendations for new security work.

Base64 and URL encoding are reversible representations. They are not encryption. JSON format and minify change whitespace after a successful parse; repair is a convenience and can still fail on invalid input.

A UUID is an identifier. It is not a password. Version choice (random, name-based, time-based) is yours; colliding or predictable IDs in your own system are not something a web page can guarantee against.

A generated password is only as strong as the length and character sets you selected, and as safe as where you store it. We do not receive it. We also cannot see if it is reused elsewhere.

Figures on calculator pages are estimates from the numbers you enter. The compound interest page uses a fixed nominal rate and compounding schedule. It does not add deposits, fees, or tax. Results are not a tax filing, a loan offer, or investment advice. Rounding, local rules, and fees in the real world can differ.

FPS, frame time, and similar readings depend on the browser, drivers, power mode, thermal limits, other tabs, and the preset you picked. Two devices, or the same device on battery vs plugged in, will not always agree.

A test does not measure every part of a GPU. It does not replace vendor tools, and it does not prove a card is healthy or a good purchase. Heat and stress are your responsibility; see the terms of use.

Names such as MD5, SHA-256, UUID, and GPU model strings that your browser reports are used so you can find the right page or read a result. They do not mean those organizations sponsor or review CZNull.

The site may be slow, blocked on a network, or missing a page. We do not warrant uninterrupted access.

Privacy policy: what we do not receive from tools, and what a visit or email may include. Terms of use: using the site. Legal: short index. Contact: if a page looks wrong.