String Tools

Encode, decode, split, join and manipulate strings. All 159 tools run entirely in your browser, so your data never leaves your device.

All string tools

159 tools

Add Accents to a String

Randomly sprinkle combining diacritics over the letters of a string.

Add Duplicate Spaces to a String

Replace each single space with two (or more) spaces.

Add a Prefix to a String

Prepend text to a string (or to every line of it).

Add a Suffix to a String

Append text to a string (or to every line of it).

Base32 Decode a String

Decode a string from Base32.

Base32 Encode a String

Encode a string to Base32.

Base45 Decode a String

Decode a string from Base45.

Base45 Encode a String

Encode a string to Base45.

Base58 Decode a String

Decode a string from Base58.

Base58 Encode a String

Encode a string to Base58.

Base64-decode a String

Decode a Base64-encoded string back into readable text.

Base64-encode a String

Convert a string to Base64 encoding, right in your browser.

Ascii85 Decode a String

Decode a string from Ascii85.

Ascii85 Encode a String

Encode a string to Ascii85.

Blockify a String

Fit a string into an N-by-M block of characters.

Calculate String Statistics

Report a string's length, word count, entropy and more.

Capitalize Words in a String

Make the first letter of every word uppercase.

Center a String

Center every line of a string within a given width.

Chunkify a String

Split a string into fixed-length chunks.

Circlify a String

Arrange the characters of a string around a circle.

Color a String

Paint each character or word of a string in cycling rainbow colors.

Convert a String to an Array

Build a JSON, JavaScript, or Python array from a string's parts.

Convert a String to a Hyperstring

Turn a plain string into an HTML fragment with one paragraph per line.

Convert a String to Integers

Turn each character into its Unicode code-point value.

Convert a String to Punycode

Encode a Unicode string to its Punycode representation.

Convert Bytes to a String

Decode a sequence of UTF-8 byte values back into a string.

Convert a Hyperstring to a String

Strip HTML tags and entities to recover the plain string.

Convert a Netstring to a String

Decode a netstring and output the string it contains.

Convert Newlines to Spaces

Replace line breaks in a string with spaces.

Convert Punycode to a String

Decode a Punycode string back to Unicode.

Convert Spaces to Newlines

Replace spaces and tabs in a string with line breaks.

Convert Spaces to Tabs

Turn groups of spaces in a string into tab characters.

Convert a String to Bytes

Encode a string as its sequence of UTF-8 byte values.

Convert a String to an Image

Render a string as a downloadable PNG, JPG or WebP image.

Convert a String to a Netstring

Wrap a string as a length-prefixed netstring.

Convert Tabs to Spaces

Replace every tab character in a string with spaces.

Count Newlines in a String

Count how many line breaks a string contains.

Create a String Cloud

Count word frequencies and list the words from most to least common.

Create a String of Certain Length

Build a string that is exactly the length you ask for.

Create an Anagram from a String

Shuffle the letters of a string into a new arrangement.

Create Mistakes in a String

Introduce random typos by substituting characters in a string.

Create String Mnemonic

Build an acronym from the first letter of every word.

Delete Characters from a String

Remove every occurrence of the characters you specify.

Delete String Consonants

Remove consonants from a string.

Delete Symbols from a String

Strip punctuation and symbols, keeping letters, digits, and spaces.

Delete String Vowels

Remove vowels from a string.

Diff Two Strings

Highlight what changed between the first two lines of your input.

Divide a String into Syllables

Split each word of a string into its syllables (heuristic).

Extract Emails from a String

Find and list all the email addresses in a string.

Extract Numbers from a String

Find and list all the numbers in a string.

Extract Regex Matches from a String

Pull every substring that matches a regular expression.

Extract a Substring

Grab a fragment of a string by start position and length.

Extract URLs from a String

Find and list all the web addresses in a string.

Filter String Lines

Keep or drop the lines of a string that match a pattern.

Find and Replace a String

Replace every match of a word or regular expression.

Find the LCS of Two Strings

Find the longest common subsequence of the first two lines.

Find Mistakes in a String

Heuristically flag words in a string that look misspelled.

Find the Length of a String

Count how many characters a string contains.

Fix String Quoting

Balance mismatched surrounding quotes on each line of a string.

Format a Multi-line String

Tidy a multi-line string: trim lines and collapse blank runs.

Generate a Custom String

Build a random string from a chosen character set, with affixes.

Generate a Long String

Create a long random string from a chosen character set.

Generate a Short String

Create a short random string from a chosen character set.

Generate a Zalgo String

Convert a string to Unicode mess.

Generate All N-grams

Generate all ngrams of a string.

Generate an LCD String

Render a string as three-row seven-segment LCD ASCII art.

Generate N-skip-M-grams

Generate n-skip-m-grams of a string.

Generate a Random String

Create a random string of any length from a chosen character set.

Generate a String from Regex

Produce random strings that match a regular expression.

Generate String Typos

Create one-edit misspellings of a string.

Generate Trigrams

List every three-token gram from a string.

Generate Triplet Strings

Create three strings that are anagrams of one another.

Generate Twin Strings

Create two strings that are anagrams of one another.

Grep a String

Keep the lines of a string that match a regular expression.

Head a String

Keep the first few lines, words, or characters of a string.

HTML-decode a String

Convert HTML entities back into the characters they represent.

HTML-encode a String

Convert a string to HTML entities so it renders as plain text.

HTML-strip a String

Strip all HTML tags from a string.

IDN Decode a String

Decode an ASCII (xn--) domain name back to Unicode.

IDN Encode a String

Encode an internationalized domain name to its ASCII (xn--) form.

Join Strings

Join a list of strings (one per line) with a delimiter.

Justify a String

Stretch each line so it aligns to both the left and right margins.

Left-align a String

Remove leading indentation so every line starts at the margin.

Left-pad a String

Pad the left side of every line to a fixed length.

Lemmatize a String

Reduce every word in a string to a dictionary base form.

Make a Zalgo String Readable

Remove Unicode mess from a string.

Mirror a String

Reflect a string as if seen in a mirror.

Mix Two Strings

Interleave two strings character by character into one.

Number a Multi-line String

Add a line number to the start of every line.

Number of Letters in a String

Count how many letters a string contains.

Number of Lines in a String

Count how many lines a multi-line string contains.

Number of Paragraphs in a String

Count how many paragraphs a multi-line string contains.

Number of Words in a String

Count how many words a string contains.

Partition a String

Split a string into pieces by chunk length, part count, or a separator.

Printf a String

Apply a printf/sprintf format to whitespace-separated arguments.

Proper-case a String

Uppercase the first letter of every word, leaving the rest as-is.

Quoted-Printable Decode a String

Convert quoted-printable encoded data to a string.

Quoted-Printable Encode a String

Convert a string to quoted-printable encoding.

Quote a String

Wrap a string in a pair of quotes.

Reduce String Alphabet

Limit the alphabet letters that are used in a string.

Remove Accent Characters

Remove all diacritical signs from a string.

Remove Duplicate Spaces from a String

Collapse runs of repeated spaces down to a single space.

Remove All Empty Lines

Delete every blank line from a string.

Remove All Punctuation

Delete dots, commas and other punctuation from a string.

Remove All Whitespace

Delete every space, tab and newline from a string.

Repeat a String

Duplicate a string as many times as you need.

Repeat String Characters

Duplicate every character in a string a fixed number of times.

Replace Letters with Digits

Rewrite a string in leetspeak by swapping letters for look-alike digits.

Replace Multiple Strings

Apply a whole set of find/replace rules in one pass.

Reverse Sentences in a String

Reverse the order of all the sentences in a string.

Reverse a String

Write a string backwards, character by character.

Reverse Words in a String

Reverse the order of all the words in a string.

Rewrite a String

A tiny string rewriting system.

Right-align a String

Align every line of a string to the right margin.

Right-pad a String

Pad the right side of every line to a fixed length.

ROT13 a String

Encode or decode a string with the ROT13 letter cipher.

ROT18 a String

Rotate letters by 13 and digits by 5: ROT13 plus ROT5.

ROT47 a String

Encode or decode a string with the ROT47 cipher over printable ASCII.

Rotate a String

Cyclically shift the characters of a string left or right.

Shift a String

Slide a string left or right, filling the vacated positions.

Shuffle Words in a String

Randomly reorder all the words in a string.

Slash-escape a String

Backslash-quote newlines, tabs, quotes and other characters.

Slash-unescape a String

Turn backslash escape sequences back into real characters.

Slice a String

Extract a slice of a string between two positions.

Slugify a String

Create an SEO-friendly URL from a string.

Sort a Numeric String

Sort the whitespace-separated numbers in a string.

Sort Letters in a String

Sort all the letters of a string alphabetically.

Sort Strings

Sort a list of strings alphabetically, numerically or by length.

Sort Words in a String

Sort all the words of a string alphabetically.

Spiralify a String

Lay a string out in an inward spiral.

Split a String

Break a string into pieces by length or by a separator.

Squarify a String

Lay a string out around the border of a square.

Stem a String

Reduce every word in a string to its Porter stem.

String Frequency Analysis

Find the most frequent letters and words in a string.

String Hamming Distance

Count the differing positions between two equal-length lines.

String Levenshtein Distance

Count the single-character edits between the first two lines.

Tail a String

Keep the last few lines, words, or characters of a string.

Test a String with Regex

Check whether a string matches a regular expression.

Title-case a String

Capitalize a string the way a title would be written.

Tokenize a String

Split a string into word or character tokens.

Transpose a String

Flip a multi-line string's rows and columns.

Trim a String

Trim whitespace from the left or right side of a string.

Truncate a String

Cut a string down to a given length.

Unquote a String

Remove the quotes surrounding a string.

URL-decode a String

Turn a percent-escaped URL string back into plain text.

URL-encode a String

Percent-escape a string so it's safe to use in a URL.

UTF-16 Decode a String

Decode UTF-16 hex code units back into a string.

UTF-16 Encode a String

Encode a string as its UTF-16 code units in hexadecimal.

UTF-32 Decode a String

Decode UTF-32 hex code points back into a string.

UTF-32 Encode a String

Encode a string as its UTF-32 code points in hexadecimal.

UTF-8 Decode a String

Decode UTF-8 hex bytes back into a string.

UTF-8 Encode a String

Encode a string as its UTF-8 bytes in hexadecimal.

Uudecode a String

Convert Unix-to-Unix data to a string.

Uuencode a String

Convert a string to Unix-to-Unix encoding.

View and Edit Strings

Edit a string in your browser and see live character stats.

Wrap a String

Wrap a string to a maximum line length.

Xxdecode a String

Convert an Xxencoded string to a regular string.

Xxencode a String

Convert a string to Xxencoding.

Zigzagify a String

Lay a string out in a zigzag across several rows.