Why a character count and a byte limit disagree
Compare Unicode code points, visible characters, JavaScript length, and UTF-8 bytes with Korean text, emoji, and combining accents.
Read the worked examplePRACTICAL GUIDES
Understand the result.
Worked examples for tasks in HaloBench and PicFit. Each guide explains the calculation, the choices that change the output, and what to verify before using it.
Resize a photo without confusing crop, dimensions, and file size
Work through a 4032 × 3024 photo exported at 1200 × 630, choose Fill or Fit, and preserve transparency with the right format.
Read the worked exampleConvert HEX, RGB, and HSL without losing track of rounding
Decode #D9FF68, reproduce its RGB and HSL values, and understand why an integer HSL round trip can change the final HEX.
Read the worked example