List item trimmer
World's simplest list toolThis 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.
A link to this tool, including input, options and all chained tools.
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What is a list item trimmer?
learn more about this toolWith 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 useList 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
A specific symbol is used
to separate input items.
to separate input items.
Specify the character or regex
that separates list items here.
that separates list items here.
Specify a character, multiple
characters, or a short string
that will separate output
list items.
characters, or a short string
that will separate output
list items.
Remove whitespaces from
the left side of list items.
the left side of list items.
Remove whitespaces from
the right side of list items.
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
A multi-character pattern is
that can be matched with
a regex is used to separate
input items.
that can be matched with
a regex is used to separate
input items.
Specify the character or regex
that separates list items here.
that separates list items here.
Specify a character, multiple
characters, or a short string
that will separate output
list items.
characters, or a short string
that will separate output
list items.
Remove whitespaces from
the left side of list items.
the left side of list items.
Remove whitespaces from
the right side of list items.
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
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We're Browserling — a friendly and fun cross-browser testing company powered by alien technology. At Browserling our mission is to make people's lives easier, so we created this collection of online list tools. Our tools are focused on getting things done quickly and as soon as you load your list in the input of any of our tools, you'll instantly get the result. Our list tools are actually powered by our web developer tools that we created over the last couple of years. Check them out!
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