Math & Numbers

Perform core vector operations such as addition, subtraction, scaling, magnitude, normalization, angle, and distance

Date & Time

Compare multiple participants across time zones, find overlapping working windows, and export the best meeting slots to ICS

Data Analysis

Forecast future periods from CSV or JSON time-series data and inspect trend, seasonal, and residual decomposition in one report

Date & Time

Calculate duration, time gap, and business-day differences between two timestamps in different time zones with DST awareness

Data Analysis

Upload CSV or JSON time series data, detect anomalies with Z-Score and IQR methods, and return a chart-backed report

Media

Flip video horizontally (mirror left-right) while keeping original container format and copying audio stream when possible

Media

Extract audio and/or video streams from a video file using stream copy (no transcoding) after probing stream availability

Validation

Validate EU VAT numbers

Utilities

Test your typing speed with multi-difficulty English and Chinese text samples. Real-time WPM, accuracy, net speed, and per-character error breakdown.

Sports

Plan long-course triathlon execution: T1/T2 transition checklists and time budgets, segment-by-segment bike pacing from the road-load power model with CdA 0.18–0.30 and yaw-dependent aero, run-off-the-bike pace targets with running-economy decay, and race-day carb/fluid totals.

Validation

Parse Title/Chapter/Article/Section/Subsection/Appendix municipal code citations, generate Bluebook Rule 12.9.2 legal citations, detect renumbering after recent ordinances (gaps, duplicates, out-of-order sections), and optionally live-verify hosted deep links.

Design

Upload a variable font (TTF/OTF/WOFF/WOFF2) to inspect its fvar axes and named instances, preview interpolation live in the browser, and generate ready-to-paste font-variation-settings CSS plus the equivalent high-level properties and a variable @font-face block.