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list item trimmer

world's simplest list tool

This is a super simple browser-based application that trims items in a list. It can remove unnecessary spaces, tabs, and line breaks from the left and/or right side of each item. It works with simple lists that use a single item separator symbol and also complex lists that use multi-symbol patterns as item separators. Created by list geeks from team Browserling.

᠎᠎᠎          Tool Options

Separator for the Input List

A specific symbol is used
to separate input items.
A multi-character pattern is
that can be matched with
a regex is used to separate
input items.
Specify the character or regex
that separates list items here.

Separator for the Output List

Specify a character, multiple
characters, or a short string
that will separate output
list items.

Trimming Side

Remove whitespaces from
the left side of list items.
Remove whitespaces from
the right side of list items.

What is a list item trimmer?

With this utility, you can clean up excess whitespaces that surround list items. You can trim list items from both the left and right side (or optionally, just from one side). The trimming method does not affect printable characters and whitespaces in the middle of items. It only removes invisible leading and trailing spaces, tabs, and newlines. By default, the program separates the list items via a specific character, which is usually a comma, a semicolon, or a dash (you can change this input separator character in the options). If the input list uses several different separator characters or a changing multi-character pattern between the items, then you can switch to the regular expression separator mode. In this case, you can enter a regular expression in the same field as a specific character and the regexp will find these more complicated separators. After removing whitespaces, the program returns a cleaned list of the same items. The new items can have a new separator format that you can specify in the options. Listabulous!


List item trimmer examples

Click to try

List of Leap Years

In this example, we apply the trimming algorithm on a list of 21st century leap years. To match the input list format, we select the "Character Split Mode" and enter a slash symbol in the item delimiter field. The list is in a dirty state and many of the items are surrounded by spaces, tabs, and even newlines on both sides. To clean it up and trim list elements, we enable pre- and post-trim options. The pre-trim option (also known as left-trim) cleans the beginning of each item and the post-trim (also known as right-trim) option cleans the end of each item. For the trimmed output list, we enter a pipe character in the output delimiter field and get a super clean pipe-separated list of leap years.

2004 / 2008 / 2012 / 2016 / 2020 / 2024 / 2028 / 2032 / 2036 / 2040 / 2044 / 2048 / 2052 / 2056 / 2060 / 2064 / 2068 / 2072 / 2076 / 2080 / 2084 / 2088 / 2092 / 2096
2004|2008|2012|2016|2020|2024|2028|2032|2036|2040|2044|2048|2052|2056|2060|2064|2068|2072|2076|2080|2084|2088|2092|2096
Required options
These options will be used automatically if you select this example.
A specific symbol is used
to separate input items.
Specify the character or regex
that separates list items here.
Specify a character, multiple
characters, or a short string
that will separate output
list items.
Remove whitespaces from
the left side of list items.
Remove whitespaces from
the right side of list items.

List of Chemical Elements

This example loads Mendeleev's periodic table of chemical elements as the input. Unfortunately, the elements are chaotically surrounded by trailing whitespaces, which makes the table ugly and unusable for scientific publishing. What's worse, sometimes there are commas between the elements, sometimes semicolons, and sometimes dots. To catch all these delimiters, we switch to the "Regexp Delimiter Mode" and set the regular expression equal to "/[,;.]/". Once elements are found, we remove spaces from the right side of the elements and create a new element table that's separated by commas.

H , He ; Li, Be ; B , C , N , O , F, Ne ; Na , Mg . Al, Si, P, S, Cl, Ar , K, Ca , Sc , Ti, V, Cr , Mn , Fe ; Co , Ni, Cu , Zn , Ga , Ge ; As, Se ; Br , Kr , Rb , Sr , Y, Zr , Nb , Mo , Tc , Ru , Rh , Pd , Ag . Cd , In , Sn , Sb , Te ; I, Xe ; Cs, Ba , La , Ce ; Pr , Nd , Pm , Sm , Eu , Gd , Tb , Dy, Ho , Er , Tm , Yb , Lu , Hf, Ta , W, Re ; Os, Ir , Pt, Au , Hg . Tl, Pb , Bi, Po , At, Rn , Fr , Ra , Ac , Th , Pa , U , Np, Pu , Am , Cm , Bk, Cf, Es, Fm , Md , No , Lr , Rf, Db , Sg . Bh , Hs, Mt
H, He, Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Br, Kr, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Te, I, Xe, Cs, Ba, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Po, At, Rn, Fr, Ra, Ac, Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No, Lr, Rf, Db, Sg, Bh, Hs, Mt
Required options
These options will be used automatically if you select this example.
A multi-character pattern is
that can be matched with
a regex is used to separate
input items.
Specify the character or regex
that separates list items here.
Specify a character, multiple
characters, or a short string
that will separate output
list items.
Remove whitespaces from
the left side of list items.
Remove whitespaces from
the right side of list items.

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://onlinetools.com/list/trim-list-items?input=%0A2004%09/%202008%20%20/%202012%09/%202016%20%20/%0A%202020%20/%202024%09/%202028%20%20/%202032%09/%202036%20%20/%202040%20/%202044%09/%202048%20%20/%202052%09/%202056%0A%20%20%0A%20%20%0A%20%20/%202060%20/%202064%09/%202068%20%20/%202072%09/%202076%20%20/%202080%20/%202084%09/%202088%20%20/%202092%09/%202096%0A%0A&string-separator=true&input-separator=%252F&output-separator=%257C&left-trim=true&right-trim=true

All List Tools

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Quickly print all distinct items of a list.

Find Duplicate List Items

Quickly print all repeating items of a list.

Find the Length of a List

Quickly count the number of items in a list.

Color List Items

Quickly display list items in multiple colors.

Create a Custom List

Quickly generate a list of arbitrary length with arbitrary items.

Create a Random List

Quickly generate a random length list with random items.

Find List Items

Quickly find certain items in a list.

Find Most Popular List Items

Quickly find how many times each item appears in the list.

Replace List Items

Quickly replace certain items in a list with new items.

Delete List Items

Quickly remove items from a list that match a pattern.

Reverse a List

Quickly print all list items in reverse order.

Sort a List

Quickly sort list items alphabetically or numerically.

Randomize a List

Quickly shuffle list items and make it random.

Randomly Select a List Item

Quickly randomly pick one or more items from a list.

Convert a List to an Image

Quickly create a downloadable image from a list.

Change List Item Separator

Quickly set a new delimiter for items in a list.

Delete List Item Separators

Quickly remove the symbol that separates list items.

Normalize List Item Separators

Quickly change list item delimiters to the same symbol.

Truncate a List

Quickly remove items from the beginning or end of a list.

Join List Items

Quickly join all items of a list together.

Group List Items

Quickly create groups of multiple list items.

Slice a List

Quickly extract a part of a list.

Delete Empty List Items

Quickly remove all empty items from a list.

Trim List Items

Quickly remove whitespace characters around list items.

Duplicate a List

Quickly create multiple copies of a list.

Rotate a List

Quickly rotate list items to the left or right (or up and down).

Add a List Item Counter

Quickly enumerate list items and add a counter to them.

Add List Item Bullets

Quickly add bullet markers to all items in a list.

Remove List Item Bullets

Quickly remove all bullet markers from list items.

Quote List Items

Quickly wrap all list items in quotes.

Unquote List Items

Quickly remove all quotation marks from around list items.

Wrap Text Around Items

Quickly add text on the left and right sides of all list items.

Unwrap Items From Text

Quickly remove text from the left and right sides of all list items.

Add a List Item Prefix

Quickly prepend a prefix before each list item.

Remove a List Item Prefix

Quickly delete any prefix from the beginning of all list items.

Add a List Item Suffix

Quickly append a suffix after each list item.

Remove a List Item Suffix

Quickly delete any suffix from the end of all list items.

Change the Length of a List

Quickly add or remove list items to make it a certain length.

Convert a List to Columns

Quickly create multiple columns from a single list.

Create a Symmetric List

Quickly create a palindromic list from the given list.

Append Items to a List

Quickly add new items at the beginning or end of a list.

Left-pad a List

Quickly left-pad a list with one or more items.

Right-pad a List

Quickly right-pad a list with one or more items.

Delete Repeating List Items

Quickly remove items that repeat in a list.

Filter a List

Quickly apply a filter on all list items (extract certain items).

Print List Statistics

Quickly analyze a list and print its item statistics.


Coming Soon

These list tools are on the way!
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View and edit lists in a neat browser-based list editor.

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 (map function).

Reduce a List

Run the reduce function on a list.

Find Certain List Items

Quickly find and print items that interest you in a list.

Find Repeating List Items

Quickly find and print items that repeat in a list.

Delete Unique List Items

Quickly find and remove items that are unique in a list.

Extract a Sublist from a List

Given start and stop indexes, extract a sublist from a list.

Shift List Items

Shift list items to the left or right (or up and down).

Indent List Items

Add indentation to all list items.

Skew List Items

Make a list go increasingly sideways (to the left or right).

Mirror a List

Quickly create a mirror copy of a list.

Invert a List

Invert the order of items in a list (last becomes first, etc).

Convert a List to Rows

Create multiple rows from a single list.

Convert a List to Excel

Create an Excel (XLS/XLSX) file from a list.

Convert a List to PDF

Create a PDF file from a 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.

Compare Two Lists

Find the difference between two lists.

Compare Three Lists

Find the difference between three lists.

Remove One List from Another

Remove elements from a list that appear in the other list.

Find Common Items in Lists

Find items that are shared between two or more lists.

Find Distinct Items in Lists

Find items that are unique in two or more lists.

Zip Two Lists

Join two or more lists together item by item.

Unzip Two Lists

Split an interleaved list into two or more separate lists.

Merge Two Lists

Append a second list at the end of the first list.

Pair List Items

Create pairs from all list items.

Pop List Items

Remove list items at certain index positions.

Push List Items

Add new items at the end of a list.

Splice a List

Modify a list in-place by adding, replacing, or removing items.

Flatten a List

Remove all indentation levels from a list and make it flat.

Make List Items Bold

Quickly apply the bold effect to all list items.

Make List Items Italic

Quickly apply the italic effect to all list items.

Make List Items Cursive

Quickly rewrite all list items in cursive.

Change List Item Font

Quickly change the font of all list items.

Add an Underscore to List Items

Quickly add an underscore to all list items.

Add a Strikethrough to List Items

Quickly add a strikethrough to all list items.

Make List Items Title Case

Quickly change the letter case of all items to title case.

Make List Items Proper Case

Quickly change the letter case of all items to proper case.

Make List Items Random Case

Quickly randomly change the letter case of all items.

Make List Items Lowercase

Quickly change the letter case of all items to small letters.

Make List Items Uppercase

Quickly change the letter case of all items to capital letters.

Remove List Item Counter

Quickly remove any numeration from a list of items.

Create an Empty List

Generate a list with no items (just bullet points).

Visualize a List

Quickly create a graphical representation of a list.

Create a List Cloud

Create an image with a cloud of list items.

Create a Spiral List

Create an image with list items going in a spiral.

Create a ZigZag List

Make list items go in a zigzag.

Add Errors to a List

Add errors and corruption to a list.

Base64-encode a List

Convert any list to base64 encoding.

Base64-decode a List

Convert any list from base64 encoding back to a list.

URL-encode a List

Convert any list to URL encoding.

URL-decode a List

Convert any list from URL encoding back to a list.

Convert a List to JSON

Create a JSON array from a list.

Convert JSON to a List

Create a list from a JSON array.

Convert a List to XML

Create an XML document from a list.

Convert XML to a List

Create a list from an XML document.

Convert a List to YAML

Create a YAML file from a list.

Convert YAML to a List

Create a list from a YAML file.

Convert a Text List to a Binary List

Create a binary list from a text list.

Convert a Binary List to a Text List

Create a text list from a binary list.

Compress a List

Compress a list so it uses less space.

Scroll a List

Create an animation with a list being scrolled.

Let Zalgo Destroy a List

Let Zalgo loose on a list and create list-chaos.


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