Utilities

Generate QR codes for WiFi networks to easily share credentials with guests

Text Processing

Convert any Unicode text to plain ASCII: strip accents (é→e, ñ→n), romanize Cyrillic/Greek, and transliterate Chinese to pinyin (北京→Bei Jing). Drops emojis and symbols that have no ASCII equivalent.

Media

Extract still frames from a video at a fixed interval, custom timestamps, or the first N frames — uses fast input seeking and downloads a ZIP.

AI Tools

Turn a screenshot into an editable visual layout tree, component inventory and coding handoff.

AI Tools

Research US vehicle symptoms and fault codes with source-aware hypotheses, safety screening and optional user-entered repair budgets.

Sports

Parse an FAI IGC flight-recorder file (A/H/I/C/B/F/L/G records) end to end and audit it like a badge secretary: takeoff/release/landing detection (ENL engine-noise or tow kinematics), total altitude gain, OLC/XCscore-style optimal free distance over the convex hull, best FAI triangle against the 28% shortest-side rule, out-and-return distance, pre-flight C-record declaration chain (declared-before-takeoff, task shape, FAI triangle check), loss-of-height rules, and the G-record security audit with signed-stream coverage reconstruction (H O/P and non-manufacturer L records excluded per the IGC specification). Evaluates Silver / Gold / Diamond badge elements and the 750 km + 250 km diploma ladder.

Calculator

Builds the true final price as a waterfall: stacked discounts, correct sales-tax base and cascade, tipping on the etiquette base with rounding, per-person split, and mid-market vs DCC conversion.

Format Conversion

Convert configuration files between dotenv .env, TOML, INI, Java .properties, YAML, JSON, HCL (Terraform/Vagrant native syntax) and Nix attribute sets, and emit Kubernetes ConfigMap or Secret manifests. Template placeholders (${VAR}, {{var}}, envsubst) are preserved verbatim, type inference provenance (string/int/float/bool/list) is tracked, HCL block labels fold into nested keys, and a round-trip diff calls out non-equivalent settings — dropped keys, re-typed values and rewrites — instead of coercing them silently.

Science & Education

1/f = 1/u + 1/v solved for f, u, or v: magnification, real/virtual image nature, and power in diopters.

Science & Education

Δt = γ·Δτ with γ = 1/√(1−v²/c²): both clock views for any speed below c, from the 0.6c hand-check case to muon lifetimes at 0.998c.

Science & Education

u = (v + u′)/(1 + vu′/c²) for β or m/s pairs: relativistic sum, Galilean comparison, γ(u), and the u′ = c photon invariance case.

Math & Numbers

Balanced transportation problems as min-cost flow: successive shortest paths, MODI duals, reduced-cost optimality certificate, and full shipping plan.