List Truncate
Truncate a list to keep only a specified number of items from the start or end. Fast, free, and runs entirely in your browser with no data upload.
What does list truncation mean?
List truncation means reducing a list to a specified number of items by keeping only the first N or last N elements and discarding the rest.
How do I truncate a list using this tool?
Enter your list items (one per line or comma-separated), specify how many items to keep, choose whether to keep from the start or end, and click truncate.
Can I keep items from the end of the list instead of the beginning?
Yes, you can choose to keep either the first N items from the beginning or the last N items from the end of the list.
What happens if I request more items than the list contains?
If you request more items than the list contains, the tool will return the entire list unchanged since there aren't enough items to truncate.
Is my data safe when using this tool?
Yes, your data is completely safe. All processing happens locally in your browser, and no data is ever sent to any server.
What formats does the tool accept for list input?
The tool accepts lists with items separated by newlines (one item per line), commas, semicolons, or tabs. You can also paste JSON arrays.
Can I use this tool for large lists?
Yes, the tool can handle large lists efficiently since all processing happens locally in your browser without any server-side limitations.
Do I need to install any software to use this tool?
No, this is a web-based tool that runs entirely in your browser. No installation, registration, or software download is required.
What are common use cases for list truncation?
Common use cases include limiting search results, creating top-N lists, preparing data samples, reducing memory usage, and filtering large datasets.
Can I truncate multiple lists at once?
No, you can only truncate one list at a time. However, you can process multiple lists sequentially by repeating the operation.
Does the tool preserve the original order of items?
Yes, the tool preserves the original order of items. It only removes items from the beginning or end based on your selection.
Is there a limit to the list size I can process?
There's no hard limit, but extremely large lists may be constrained by your browser's available memory. For typical use cases, performance is excellent.
How to Use List Truncate
Trim a list down to a fixed number of items, taken from the start or the end, right in your browser — nothing is uploaded.
- Paste your list into the input box — the sample "apple,pineapple,lemon,orange,mango" contains five items to experiment with.
- Type how many items to retain in the "Keep:" field.
- Select "From start" to keep the first items, or "From end" to keep the last ones.
- Set "Split by:" to match your input separator and "Join with:" for the output.
Use "From end" on timestamped logs to keep only the most recent entries.
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