Browser-based utilities — no tracking, no server-side processing.
RSVP-style speed reader. Paste text or upload a PDF and read at up to 900+ WPM using the Optimal Recognition Point technique.
Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes instantly in your browser. Supports text and raw hex-byte input.
Any base 2–36, fractions, and two's complement at a chosen width — showing the positional expansion, the division table and the bit regrouping, not just the answer.
IPv4 network, broadcast, host range and mask, with the AND and the borrowed bits written out. Cuts a block into subnets, and works backwards from a host count.
Timed and word-count tests, lessons that build up the keyboard, drills for your weakest keys, and code typing with Tab as four spaces. History stays in your browser.
Split a block into N subnets, size subnets for host counts (VLSM), summarise routes into a supernet, and expand, compress and carve IPv6.
Bitwise operations, data size and transfer time, Unix timestamps in any zone, and chmod octal to symbolic.
Generate strong passwords, passphrases, or PINs using crypto.getRandomValues. Live entropy estimate; never leaves your browser.