List right cutter
Keep only the last N characters of every line in a line-based list — counted by Unicode code points so nothing is sliced mid-character, whole lines kept when N is longer, with an optional ellipsis and truncation statistics for tail data such as file extensions.
Runs in your browserEvery computation happens in your browser — your data never leaves this device.
Cut result
One item per line, counted by Unicode code points, ready to copy.
Paste a list to keep the right N characters of each line
Lines: 0 · Truncated: 0 · Characters kept: 0
What this tool does
- Pull the tail out of file names, paths or dated codes: extension, trailing serial number, timestamp.
- Preview masked data: show only the last 4 digits of phone numbers or card numbers.
- Align variable-length codes by their trailing fixed-width fragment for easier comparison.
Example
Input
report_2024.pdf photo_2025.jpg notes.txt
Output
.pdf .jpg .txt
With N = 4 the file list collapses to .pdf / .jpg / .txt — exactly the extension length.
Frequently asked questions
Does it keep the last N characters or remove them?
It keeps the last N characters. To strip them instead, use the matching “remove right N characters” tool — the two are exact inverses.
How are Chinese characters counted?
One Chinese character is 1 and one emoji is 1, because counting walks Unicode code points, so a character is never split in half. Composite emoji such as skin-tone variants count as several code points.
What if N is longer than the line?
Nothing breaks — the line is kept as is. One N works for a list of mixed lengths; the truncation counter only counts lines that really lost characters.
What about a negative N?
It reports an error rather than treating it as 0. N must be an integer no smaller than 0; with N = 0 lines become empty and are dropped as blanks unless you turn that off.
Keywords：列表截取取右边n个字符cut rightright substring取末尾字符文件后缀list cut尾部截取