Format Conversion

Convert a Markdown pipe table to CSV, JSON rows or an inferred JSON Schema with alignment and null diagnostics

Document Tools

Expand text into ICAO, ITU or ARRL spelling words and download a printable PDF card

Text Processing

Fix garbled text (mojibake) caused by wrong-encoding decoding — reverse UTF-8/Latin-1, Windows-1252, GBK, Shift-JIS, Big5, and MacRoman chains. Auto mode tries all and picks the cleanest result.

Utilities

Convert any date between Gregorian (AD), the Nepali Bikram Sambat (BS) calendar, and the Thai solar (Buddhist Era, BE) calendar. Shows the BS month-length table for the year and explains the algorithm.

Media

Locally screen FLAC and WAV for persistent spectral cutoffs. Inspect evidence, not a promise of authenticity.

Media

Convert synced LRC lyrics into SRT subtitles (each line ends where the next begins, editable last-cue and maximum durations, [offset:] and enhanced word-timing tags handled) and turn SRT subtitles back into LRC lyrics — both directions lossless on text.

Cryptography

Audit ML-DSA / SLH-DSA / FN-DSA / BBS+ / PLONK / Halo2 parameter compatibility, proof sizes and trusted-setup requirements, with a live pure-TS ML-DSA (FIPS 204) demo

Science & Education

Ross–Macdonald R0 = m·a²·b·c·pⁿ/(−r·ln p) for malaria, dengue, Zika or chikungunya: herd-immunity threshold, vectorial capacity, critical mosquito density, parameter elasticities, control targets and a seasonal transmission-window curve.

Media

Decode a MIDI 1.0 bytestream (status bytes, running status, System Common / Real Time, System Exclusive) or a MIDI 2.0 Universal MIDI Packet stream — message types 0x0 Utility, 0x1 System, 0x2 MIDI 1.0 Channel Voice, 0x3 SysEx 7-bit, 0x4 MIDI 2.0 Channel Voice with 16-bit velocity and the 7.9 pitch attribute, 0x5 SysEx 8-bit / Mixed Data, 0xD Flex Data, 0xF UMP Stream — with per-packet field tables, byte/word/packet counts, reserved-field validation, SysEx continuation state machines, and MIDI 1.0 ⇄ UMP translation.

AI Tools

End-to-end Model Context Protocol contract testing: JSON-RPC 2.0 initialize handshake and version negotiation over stdio (newline-delimited) and WebSocket (one message per text frame), tools/list inputSchema object-root and draft 2020-12 compilation, resources/list + read, prompts/list + get, ping, -32601 error semantics, sampling/createMessage round-trip, and framing discipline — with an embedded reference server for offline self-verification.

Geography

Audit .mvt/.pbf vector tiles and PMTiles v3 archives against the Mapbox Vector Tile Specification 2.x: protobuf Layer/Feature/Value decoding, MoveTo/LineTo/ClosePath command-stream validation, ring winding and tag indexes, Web Mercator Google-tile XYZ bounds, PMTiles v3 directory decoding and tile-size vs feature-count budgets.

Science & Education

Λm = κ/c in S·cm²/mol and S·m²/mol, with optional α = Λm/Λ°m and Ka for weak electrolytes.