How the tools work
Last updated: 2026-10-12
Shared engines
Korean and English pages share the same calculation and processing logic. Equivalent inputs and units produce equivalent results in both languages.
File processing
Images are processed with browser canvas and PDF pages with a document library. Re-encoding or copying pages can change document properties, signatures or metadata, so inspect the output.
Numeric precision
Ordinary calculations use JavaScript numeric precision. Very large integers and extreme values may incur error. Displayed results are rounded to at most 12 significant digits.