Convert HEX, RGB, HSL and HSV with WCAG contrast ratios and a full tint scale.
Brightness, contrast, saturation, temperature, highlights and shadows applied to the real pixels.
Eight real per-pixel filters - blur, sharpen, pixelate, grayscale, sepia, invert, posterize, tint.
Real per-channel histograms with mean, standard deviation, median and quartiles from the decoded pixels.
Build a table of contents from Markdown headings with GitHub-accurate anchor slugs, including the -1 suffix on duplicate headings.
Encode or decode with a 5x5 Polybius square, with an optional keyed alphabet and GitHub-style coordinate pairs.
Sort a CSV, TSV or pipe-delimited table by any column, auto-detecting whether that column holds numbers, dates or text.
Hypotenuse, area, perimeter and both acute angles of a right triangle, from two legs or from a leg and the hypotenuse.
