Learn it. Make it. Done.
Clear explanations for the work behind the tools. No long detours.
Generate version 4 UUIDs for sample records
Create a batch of random UUIDs, recognize their version markers, and keep record identifiers separate from authorization secrets.
Re-encode a small video and compare its real file size
Choose an MP4 CRF setting, review motion and sound, and understand why a browser conversion cannot promise a size reduction.
Remove a video's complete audio track
Create a silent MP4, verify silence in playback, and understand the difference between removing a soundtrack and reducing its volume.
Resize a video proportionally to an even pixel width
Choose a valid video width, calculate the proportional height, and review the resulting MP4 without expecting a crop or fixed file size.
Make a short looping GIF with controlled width and frame rate
Select a video interval under 15 seconds, choose GIF dimensions and frames per second, and inspect the loop before using it.
Trim a video using a start time and export duration
Calculate a valid clip interval, understand the duration field, and review a re-encoded MP4 before sharing it.
Make a JPEG copy of a WebP image for another workflow
Export WebP as JPEG, choose quality, and check transparency, animation, and compatibility before replacing the source.
Convert a package mass from kilograms to pounds
Calculate a kilogram-to-pound conversion, distinguish mass ounces from fluid ounces, and avoid applying shipping rounding too early.
Count a draft and interpret its reading-time estimate
Check words, sentences, paragraphs, and characters while understanding the counting rules behind a short reading-time estimate.