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.
Dimensions, alpha coverage, bits per pixel and the format sniffed from the actual file bytes.
Flip horizontal or vertical, or tile the image into a repeating kaleidoscope pattern.
Everyday arithmetic and percentages, for quick sums.
Fit widths and heights at any ratio.
Compound interest and repayment schedules, charted.
Body mass index with healthy-range context.
