| Year | kWh | Price/kWh | Saved | Cumulative |
|---|
Length, mass, temperature, data and more.
Everyday arithmetic and percentages, for quick sums.
Fit widths and heights at any ratio.
Compound interest and repayment schedules, charted.
Build initialisms, recursive acronyms and random words from a phrase, plus a back-expander.
Check a phrase or number as a palindrome with a character mirror map and the longest palindromic substring.
Paste a Content-Security-Policy header and get every directive split out with its source list and a verdict, plus findings for unsafe-inline beside a host allowlist, wildcard sources, a missing default-src, data: in script-src, http: next to https:, and nonces with no strict-dynamic.
Decode a Set-Cookie or Cookie header into name, value and every attribute, with Max-Age and Expires resolved to an exact date, and flags a missing Secure or HttpOnly, a SameSite=None without Secure, and a Domain wide enough to leak to subdomains.
