Free

Document code normalizer

Document codes often mix visually identical Latin and Cyrillic letters (А/A, В/B, С/C, Е/E, К/K, М/M, Н/H, О/O, Р/P, Т/T, Х/X). Because of this, “identical” codes do not match when sorting and searching. The tool brings them to a single alphabet and to upper case, without affecting digits. Changed letters are highlighted. Paste a list — get a “before/after” table with XLSX export.

List of codes (one per line)

Convert to:LatinCyrillic

Do not change (exceptions) — comma-separatedThese substrings will stay as they are (case and letters are not touched). Convenient for project prefixes.Remove all spaces and tabs (between characters and at the edges)

How it works

Each line is one code.
Look-alike letters are brought to the selected alphabet (Latin by default).
All letters are converted to upper case.
The checkbox “Remove all spaces and tabs” (enabled by default) removes any spaces inside the code and at its edges; if unchecked, extra spaces are only collapsed and trimmed at the edges.
Exceptions: you can specify substrings (for example, a project prefix “ABC”) that will remain unchanged — convenient when you need to convert a code to Latin but keep a Cyrillic prefix.
Changed characters are highlighted in red — you can see which letters were replaced.
The XLSX export has separate columns “Before”, “After”, “Changed”, “What changed” (case / letters / spaces; “No” if unchanged), with highlighting preserved.
Digits are not changed — numeric codes stay as they are.

💬 Report an error or suggest an improvement

Found incorrect information, want to add data or have a suggestion to improve the tool? Write to us — you can attach a file (screenshot, table, document). The file is not stored on the server.