Truncate List
Truncate any list to a specific number of items by removing from the start or end with customizable delimiters
What Is a List Truncator?
The Truncate List tool lets you cut any list to a specific number of items by removing elements from either the beginning or the end. Whether you need to preview the first few items of a long list, trim the tail of a data set, or extract a specific portion, this tool handles it in real time.
How to Truncate a List
- Paste your list into the Input List text area.
- Set the Input Separator to match how your list items are currently delimited.
- Switch to Delimiting Regex mode if your separator is a pattern rather than a fixed string.
- Enter the desired List Length (how many items to keep).
- Choose Remove from End to keep the first N items, or Remove from Start to keep the last N items.
- Set the Joining Character for the output list.
- The truncated list appears instantly in the output area.
Common Use Cases
- Preview just the first few items of a long dataset.
- Trim unnecessary items from the end of a list before processing.
- Extract the most recent N entries from a chronological list by removing from start.
- Limit list output to a specific size for display or reporting purposes.
Frequently Asked Questions
What does "Remove from End" do?
It keeps the first N items of your list and removes everything after that point. For example, with a list of 10 items and a length of 5, it keeps items 1 through 5.
What does "Remove from Start" do?
It keeps the last N items of your list and removes everything before that point. For example, with a list of 10 items and a length of 5, it keeps items 6 through 10.
Can I use a regular expression as a separator?
Yes. Switch the mode to Delimiting Regex and enter a valid regex pattern.
For example, \s+ will split on any whitespace.
What happens if the list is shorter than the requested length?
The entire list is returned unchanged. The tool never adds padding or extra items.