Learn it. Make it. Done.
Clear explanations for the work behind the tools. No long detours.
Listen to a draft using your browser's available voices
Select a system voice and speaking rate, listen critically, and understand local-voice labels and speech playback limits.
Calculate an overnight duration without guessing the date
Measure a clock interval across midnight, use the next-day setting, and distinguish time-of-day arithmetic from dated elapsed time.
Schedule a meeting with a date and an IANA time zone
Convert a source wall time to a target zone, retain its UTC instant, and recognize daylight-saving gaps and overlaps.
Read typing speed and accuracy from the same exercise
Understand the one-minute timer, reproduce the WPM formula with a worked example, and compare practice sessions consistently.
Convert floor area without mixing dimensions
Convert square meters to square feet, choose matching dimensions, and carry sensible precision into an estimate.
Tell Unix seconds from milliseconds in a log entry
Convert a known timestamp to UTC, supply an explicit ISO offset, and avoid treating a local display as the source time zone.
Unlock PDF: a practical guide
Remove PDF protection using the password you provide.
Encode and decode one URL component without changing its meaning
Use component encoding for reserved characters and recognize malformed escapes, plus signs, and double encoding.
Build a campaign URL with consistent UTM parameter names
Add source, medium, and campaign values while preserving the destination's existing non-UTM parameters.