Cues longer than their text can be read at the given speed are shortened so subtitles never overlap. Nothing is shifted past 00:00:00,000.

Dedupe lines with case and whitespace options, keep order.

Collapse runs of spaces and tabs, trim each line.

Sort A-Z, Z-A, numeric, by length or shuffle — with dedupe.

Compare two blocks of text line by line with colour highlighting.
Pack a folder of icons into one spritesheet with the CSS and the coordinates.

Build an SVG path from move, line, curve and arc commands and preview it live.

A grid calculator with a real formula engine: =A1+B2*2, =SUM(A1:B3), 16 functions, and real error cells for #DIV/0!, #CIRCULAR! and #NAME? instead of hanging.

Paste a list of numbers and see whether it fits an arithmetic, geometric, Fibonacci-like or polynomial rule, with the next term and an honest note on how much the fit is worth.