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String replacer

World's simplest string tool

Free online string replacer. Just load your string and parts of it will automatically get replacted with the new string. There are no ads, popups or nonsense, just a string substituter. Load a string, get a replaced string. Created by developers for developers.
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Find options
String to find
Regular expression to match
Replacement options
New string
help
String replacer tool What is a string replacer?
This tool lets you find-and-replace strings in your browser. It finds substrings in the given string and replaces them with a new string. You can also use a regular expression to find matches to replace. Super powerful!
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String replacer examples Click to use
Replace all digits with a star
This example uses a regex to find all digits in the given string and replaces them with a star symbol.
The address is 6244 Ocho Rios Drive.The address is **** Ocho Rios Drive
Required options
These options will be used automatically if you select this example.
Regular expression to match
New string
Replace all substrings in a string
This example finds all words "foo" in the given text and replaces them with the word "bar".
foo bar foo bar foo barbar bar bar bar bar bar
Required options
These options will be used automatically if you select this example.
String to find
New string
info
Pro tips Master online string 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://onlinestringtools.com/replace-string?input=The%20address%20is%206244%20Ocho%20Rios%20Drive.&find-by-regex=true®ex=%2F%5Cd%2Fg&new-string=%2A
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Quickly convert a hexadecimal string to a string.
Quickly convert a string to ASCII codes.
Quickly convert ASCII codes to a string.
Quickly convert a string to uppercase.
Quickly convert a string to lowercase.
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Quickly extract all string data from an XML document.
Quickly convert a CSV file to evenly aligned columns of space-separated strings.
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Quickly extract all string data from a BBCode markup.
Quickly convert a string to Morse code.
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Coming soon These string tools are on the way
Replace Multiple Strings
Replace a set of strings with a new set.
Join Strings
Joins strings together with the given delimiter.
Randomize String's Case
Randomize letter case in a string.
Invert String's Case
Convert lowercase letters to uppercase, and uppercase to lowercase.
Title-case a String
Convert a string to a title with proper titlecase.
Capitalize Words in a String
Convert the first letter of every word in a string to uppercase.
Center a String
Given the length of a line, center a string.
Right-align a String
Align a string to the right.
Left-pad a String
Pad a string with characters on the left.
Right-pad a String
Pad a string with characters on the right.
Justify a String
Stretch out a string and Align it along the left and right margins.
Format a Multi-line String
Format and align a multi-line string.
Number of Letters in a String
Find how many letters there are in a string.
Number of Words in a String
Find how many words there are in a string.
Number of Lines in a String
Find how many lines there are in a multi-line string.
Number of Paragraphs in a String
Find how many paragraphs there are in a multi-line string.
Sort Words in a String
Sort all words in a string alphabetically.
Sort a Numeric String
Sort a string that contains only numbers.
String Frequency Analysis
Find most frequent words and phrases in a string.
Number a Multi-line String
Add line numbers to a multi-line string.
Prefix a String
Add a prefix to a string.
Suffix a String
Add a suffix to a string.
Shuffle Words in a String
Shuffle the order of all words in a string.
Extract Regex Matches
Extract all regex matches from a string.
Extract Emails from a String
Find and extract all email addresses from a string.
Extract URLs from a String
Find and extract all web addresses from a string.
Extract Numbers from a String
Find and extract all numbers from a string.
Generate String Statistics
Analyze string's complexity.
Convert a String to Punycode
Encode a string to punycode.
Convert Punycode to a String
Decode a string from punycode.
Base32-encode a String
Encode a string to base32.
Base32-decode a String
Decode a string from base32.
Base58-encode a String
Encode a string to base58.
Base58-decode a String
Decode a string from base58.
Base85-encode a String
Encode a string to Ascii85.
Base85-decode a String
Decode a string from Ascii85.
UTF8-encode a String
Encode a string to UTF8.
UTF8-decode a String
Decode a string from UTF8.
UTF16-encode a String
Encode a string to UTF16.
UTF16-decode a String
Decode a string from UTF16.
UTF32-encode a String
Encode a string to UTF32.
UTF32-decode a String
Decode a string from UTF32.
IDN-encode a String
Encode a string to IDN.
IDN-decode a String
Decode a string from IDN encoding.
Uuencode a String
Convert a string to Unix-to-Unix encoding.
Uudecode a String
Convert Unix-to-Unix data to a string.
Xxencode a String
Convert a string to Xxencoding.
Xxdecode a String
Convert an Xxencoded string to a regular string.
HTML-strip a String
Strip all HTML tags from a string.
Convert Spaces to Tabs
Convert all spaces in a string to tabs.
Convert Tabs to Spaces
Convert all tabs in a string to spaces.
Convert Spaces to Newlines
Convert a string to a column.
Convert Newlines to Spaces
Convert a multi-line string to a single-line string.
Remove Accent Characters
Remove all diacritical signs from a string.
Remove Duplicate Spaces
Normalize string spacing and remove all duplicate spaces.
Remove String Punctuation
Remove all punctuation from a string.
Printf a String
Apply the sprintf function on a string.
Diff Two Strings
Visualy compare and find differences between two strings.
String Levenshtein Distance
Calculate Levenshtein distance between two strings.
Rewrite a String
A tiny string rewriting system.
Generate a Zalgo String
Convert a string to Unicode mess.
Generate String Typos
Create a list of all possible string typos.
Palindrome String Checker
Check if the given string is a palindrome.
Grep, head, tail Multi-line Strings
Run grep, head and tail commands on multi-line strings, and more!