51K

List slicer

World's simplest list tool

This is a super simple browser-based application that extracts a slice of a list and returns it as a new list. You can enter the input list in any format and customize its item delimiter by specifying a character or a regular expression. You can specify the needed slice boundaries via the start-range and end-range positions. Created by list geeks from team Browserling.
A new project! we made something new
We just created Online GIF Tools that offers tools for working with GIFs. Check it out!
Item Splitting
The input list items use a single delimiter character.
The input list items use a complex pattern that can only be expressed as a regex.
Set delimiter or regex here.
Start and End of Slice
Start slicing from this position. (For example, enter 1 to slice from the start.)
End slicing at this position. (For example, leave empty to slice to the end.)
Glue Character
Join the sliced items with this character.
List slicer tool What is a list slicer?
With this utility, you can cut an arbitrary slice of the given list. The input list can be of any length, its items can have any format, and they can be separated with one or more characters or patterns. For example, if your list items are separated by commas, then you can select the "Character Separator" option and enter the comma below it; but if your list items are separated by a more complex pattern, then you can select the "Regular Expression" option and enter a full regexp below it. All items of the list are numbered from 1 to n (n is the total number of items in the list). To extract a sublist from the list, you need to specify the start and end item positions in the range options. For example, if the input list is "a, b, c, d, e, f" and the range is [2, 4], then you will get the slice "b, c, d" (because "b" is the 2nd item and "d" is the 4th item). You can also cut a fragment to the very end of the list by leaving the end position parameter empty. For example, the range [4, …] will return the slice "d, e, f". Similarly, if you want to cut a piece from the beginning to a certain position, you can leave the start position empty. For example, the range […, 3] will print the slice "a, b, c". The slicing algorithm also supports negative list positions. A negative item position counts the items from the end of the list. For example, the position -1 is the last item in the list and the position -3 is the third item from the end. Negative positions are very useful when you don't know the length of the list. In this case, you can easily drop the tail item without knowing their exact positions. For example, the range [1, -3] will drop the last 2 items from the list and returns the slice "a, b, c, d". Similarly, to extract the tail part of the list, you can set the starting position to negative, too. For example, the range [-3, -1] will extract the last three items of the list and you will get "d, e, f". To get the very last item, you can use the [-1, -1] trick. You can also customize the format of the sliced list by specifying the output list separator character. It can be the same character as in the input list or something completely different. We call this the glue character. Listabulous!
List slicer examples Click to use
Slice the Spanish Alphabet
In this example, we extract multiple letters from a list that contains the modern Spanish alphabet. The letters in the alphabet are separated by a comma, so we turn on the separate-by-a-character split mode and enter the symbol "," in the delimiter field. We use an increasing slicing range from 11 to 20 and extract ten letters from "K" to "S". We also set the glue character to ";" to make the sliced list semicolon-separated.
A, B, C, D, E, F, G, H, I, J, K, L, M, N, Ñ, O, P, Q, R, S, T, U, V, W, X, Y, Z
K; L; M; N; Ñ; O; P; Q; R; S
Required options
These options will be used automatically if you select this example.
The input list items use a single delimiter character.
Set delimiter or regex here.
Start slicing from this position. (For example, enter 1 to slice from the start.)
End slicing at this position. (For example, leave empty to slice to the end.)
Join the sliced items with this character.
Slice a List of Colors
The colors in the input list of this example use various item separators at once. They include spaces, tabs, and newlines. To correctly separate out the colors in the list, we use the split-by-a-regexp mode and set the regular expression to /\s+/, which matches all mentioned whitespace characters. We set the slice range to [2, -5], which extracts a sublist starting from the 2nd item and ending at the 5th item from the end. We print the sublist items inline and separate them by a space character.
aquamarine azure bronze burgundy coral cyan gold indigo ivory lemon lime maroon olive purple ruby violet
aquamarine azure bronze burgundy coral cyan gold indigo ivory lemon lime maroon
Required options
These options will be used automatically if you select this example.
The input list items use a complex pattern that can only be expressed as a regex.
Set delimiter or regex here.
Start slicing from this position. (For example, enter 1 to slice from the start.)
End slicing at this position. (For example, leave empty to slice to the end.)
Join the sliced items with this character.
Extract Train Departure Data
In this example, we load a list with train departure data in the input. As the items of the data are slash-separated, we set the item-separator option to the slash character "/" and use the same character to join items in the output list. We only set the start index value to 4 and leave the end index value empty. This means that we slice list elements inclusively from the fourth data element to the last element.
Reservation/number/DMQX84/Train/881636/Direction/Lyon/Paris/Saturday/October/24/2020
Train/881636/Direction/Lyon/Paris/Saturday/October/24/2020
Required options
These options will be used automatically if you select this example.
The input list items use a single delimiter character.
Set delimiter or regex here.
Start slicing from this position. (For example, enter 1 to slice from the start.)
End slicing at this position. (For example, leave empty to slice to the end.)
Join the sliced items with this character.
Pro tips Master online list tools
You can pass input to this tool via ?input query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!
https://onlinelisttools.com/slice-list?input=A%2C%20B%2C%20C%2C%20D%2C%20E%2C%20F%2C%20G%2C%20H%2C%20I%2C%20J%2C%20K%2C%20L%2C%20M%2C%20N%2C%20%C3%91%2C%20O%2C%20P%2C%20Q%2C%20R%2C%20S%2C%20T%2C%20U%2C%20V%2C%20W%2C%20X%2C%20Y%2C%20Z&string-separator=true&input-separator=%2C%20&start=11&end=20&join-character=%3B%20
All list tools
Didn't find the tool you were looking for? Let us know what tool we are missing and we'll build it!
Quickly print all list items in reverse order.
Quickly join all items of a list together.
Quickly extract a part of a list.
Quickly remove all empty items from a list.
Quickly set a new delimiter for items in a list.
Quickly count the number of items in a list.
Quickly print all distinct items of a list.
Quickly print all repeating items of a list.
Quickly remove whitespace characters around list items.
Coming soon These list tools are on the way
Truncate a List
Remove items from the beginning or end of a list.
Split a List
Split list items into chunks.
Generate the Powerlist
Create the powerlist of the given list.
Find the Car of a List
Extract the first item from a list.
Find the Cdr of a List
Extract all items except the first of a list.
Apply a Function on a List
Run a JavaScript function on every list item.
Randomize a List
Shuffle list items and make it random.
Randomly Select an Item
Randomly pick one or more items from a list.
Sort a List
Quickly sort list items alphabetically or numerically.
Find Non-repeating List Items
Quickly find and print items that don't repeat in a list.
Find Repeating List Items
Quickly find and print items that repeat in a list.
Delete Repeating List Items
Quickly find and remove items that repeat in a list.
Delete Unique List Items
Quickly find and remove items that are unique in a list.
Delete List Separator
Remove the symbol that separates list items.
Extract a Sublist from a List
Given start and stop indexes, extract a sublist from a list.
Rotate List Items
Rotate list items to the left or right (or up and down).
Invert a List
Invert the order of items in a list (last becomes first, etc).
Reduce a List
Run the reduce function on a list.
Filter a List
Find certain items in a list.
Duplicate a List
Create multiple copies of a list.
Convert a List to an Image
Create an image from a list.
Convert a List to Columns
Create multiple columns from a single list.
Convert a Text List to a LaTeX List
Create a LaTeX list from a regular text list.
Convert a Text List to a HTML List
Create a HTML list from a regular text list.
Convert a Text List to a Markdown List
Create a Markdown list from a regular text list.
Zip Two Lists
Join two lists together item by item.
Merge Two Lists
Append a second list at the end of the first list.
Pop List Items
Remove list items at certain index positions.
Push List Items
Add new items at the end of a list.
Replace List Items
Replace certain items in a list with new items.
Splice a List
Modify a list in-place by adding, replacing, or removing items.
Create the Empty List
Generate a list with no items.
Color List Items
Quickly add colors to list items.
Visualize a List
Quickly create a graphical representation of a list.
Let Zalgo Destroy a List
Let Zalgo loose on a list and create list-chaos.
Print List Statistics
Analyze a list and print its item statistics.