Orihako Data

Unify full-width and half-width characters

"ＡＢＣ１２３" and "ABC123" count as different values, so duplicates slip through and totals split.

Open “Unify full-width and half-width”

Steps

  1. Drop the CSV or Excel file.
  2. Letters, digits and symbols to half-width and katakana to full-width is what most systems expect (the default).
  3. Choose columns to limit it; none chosen means all.
  4. Changed cells are marked and counted; check and save.

Questions

Are kanji or hiragana changed?
No: only letters, digits, symbols, katakana and spaces.
Can it go with removing duplicates?
Unify widths here first, then hand the file to Remove duplicates: fewer duplicates slip through.

The CSV is never uploaded; everything runs in this browser.