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text pattern highlighter

world's simplest text tool

World's simplest browser-based utility for highlighting patterns in text. Load your text in the input form on the left, specify the patterns to be highlighted, and you'll instantly get an image of the text with the given patterns highlighted in the output area. Powerful, free, and fast. Created by developers from team Browserling.

᠎᠎᠎          Tool Options

Patterns to Highlight

Enter all patterns and strings
to highlight.
(Enter one pattern per line.)
Enter patterns and substrings
that should not be highlighted.
(Enter one pattern per line.)
Enter and highlight patterns
in strict letter case.

Image Width, Padding, and Font

Width of the image. (You can
skip this field if your text has
multiple lines with word wrapping).
Padding around the image.
(Extra space around the text.)
Font size.
Line height.
Select a font face for the image.
Load a custom font URL.
(To make this option work,
you must enable the custom
mode in the list above.)

Pattern Colors

Color of highlighted patterns.
Color of fill under patterns.
Color of other characters.
Color of fill under characters.
Color of image background.

What is a text pattern highlighter?

With this online tool, you can highlight specific patterns in the given text. It allows you to easily visualize single-character or multi-character text snippets, single-word or multi-word phrases, and substrings of arbitrary length. The program works by taking any text as input and outputs a downloadable picture version of the text, where the desired patterns are written in a different color and their background is highlighted in another color. You can enable the "Highlight Specific Patterns" mode and specify as many patterns for highlighting as you want by entering one pattern per line. For example, if you want to quickly identify and highlight all occurrences of the substring "new" in the text in yellow color, you can enter the snippet "new" in the multiline option field and set the marker color or text color for the substring to "yellow". In this case, the resulting image will display the "new" fragment in yellow in all words such as "k𝗻𝗲𝘄", "𝗻𝗲𝘄ly", "𝗻𝗲𝘄er", "𝗻𝗲𝘄born", "𝗻𝗲𝘄spaper", and so on. If you switch to the "Highlight All Patterns" mode, the program will immediately color all text characters in yellow. In this case, you can easily exclude one or more patterns from highlighting. For example, by specifying the pattern "new" in the "Patterns to Exclude" option, you will get the inverse result of the previous one. All substrings except for the "new" will be painted in yellow, "𝗸new", "new𝗹𝘆", "new𝗲𝗿", "new𝗯𝗼𝗿𝗻", "new𝘀𝗽𝗮𝗽𝗲𝗿". In this mode, you can also specify any number of patterns to be excluded by pasting each pattern on an individual line in the option field. To make the pattern search case-insensitive, you can disable the "Case-sensitive Patterns" checkbox. Conversely, if you want to highlight patterns of a specific case, you can activate this option. If you don't specify the width of the output image, then the dimensions of the image are set by the program itself. If the input text has a specific width already and the words have been wrapped manually, you can omit the image dimensions, and the program will use the longest text line for the maximum width. If the text has a long-line format without word wrap, then you should set the width parameter so that the image is not too long and narrow. The height of the image is always calculated automatically based on the number of wrapped text lines. To prevent the text from laying too close to the edges of the image, you can add additional space around the text in the padding option. To prevent the lines from being too cramped together, you can add vertical space between them in the line height option. You can specify the size of the text in the font-size option and you can choose the font style from a list of the most popular fonts. You can also use any other font for writing the text by switching to the "Custom" mode in the fonts list and loading a URL of the desired font in the URL option below. The color palette of the image can be adjusted in the last block of options. Here you can specify five different colors for different parts of the text. You can specify the color of the highlighted patterns and the background fill of the patterns. Similarly, you can specify the color for the text that was not matched by the patterns and set the color of the non-matched text. You can also set the background color of the entire image. The easiest way to specify colors is to use their English names. For example, "yellow", "purple", or "sienna". The second way is to specify the hexadecimal code of the color, for example, "#FFFF00", "#800080", or "#A0522D". The third way is to specify the RGB code, for example, "rgb(255, 255, 0)", "rgb(128, 0, 128)", or "rgb(160, 82, 45)". The fourth way is to select a color from the color palette (click on the palette icon). Additionally, you can specify the color for each highlighted pattern directly in the pattern definition list via the format "pattern = color". For example, the pattern "new = green" will ignore the color specified in the "colors of highlighted patterns" option and force the color of the pattern "new" to be green. This way, you can assign multiple highlighting colors to specific patterns. To assign both a unique pattern color and a unique background color for that pattern, you can use the format "pattern = text-color/background-color". For example, "new = green/aquamarine". And if you only want to add only a unique background color to a pattern, you can use the format "pattern = /background-color". For example, "new = /aquamarine". Textabulous!


Text pattern highlighter examples

Click to try

Highlight Two Patterns

In this example, we highlight two different patterns in a short essay about a city during sunset. We activate the "Highlight Specific Patterns" option and enter the substrings "sun" and "car" there. Since the essay does not have word wrapping (the entire essay is a single text line), we set a fixed width of 960 pixels for it. We paint the text with a black ink on a moccasin-colored background and choose a medium-violet-red color and a light-pink marker color for the highlighted patterns.

The scarlet sunset painted the sky with shades of orange and red. A caravan of boats sailed peacefully on the tranquil waters, swaying gently to the rhythm of the waves. Like cars carrying passengers, the boats were carrying dreams and hopes. As the sun went down, people gathered around, discarding their worries and troubles. They watched in awe as the sky turned into a canvas of beauty and serenity.
Required options
These options will be used automatically if you select this example.
This example will reset all options to their
default values before applying new ones.
Enter all patterns and strings
to highlight.
(Enter one pattern per line.)
Enter and highlight patterns
in strict letter case.
Width of the image. (You can
skip this field if your text has
multiple lines with word wrapping).
Padding around the image.
(Extra space around the text.)
Font size.
Line height.
Select a font face for the image.
Color of highlighted patterns.
Color of fill under patterns.
Color of other characters.
Color of fill under characters.
Color of image background.

Highlight Patterns in a Poem

In this example, we enable the "Highlight All Patterns" mode that by default highlights every symbol in the four-line poem. To exclude certain substrings from being highlighted, we use the additional "Patterns to Exclude" option, and enter the substrings "so", "he", and "in". The highlighted patterns have the bright "chartreuse" color that's drawn on a dark "navy" filled background, while all substrings that are excluded are displayed in plain "white" color without a marker fill. As the poem has short lines of fixed length, we don't need to specify size parameters for the output image as the program can deduce them from the number of lines and their length. We also use a custom font called "Indie Flower", which we load using a URL that we copied from Google Fonts.

The rain falls gently from the sky, A soothing sound to hear, A symbol of renewal and growth, A blessing to the ear.
Required options
These options will be used automatically if you select this example.
This example will reset all options to their
default values before applying new ones.
Enter patterns and substrings
that should not be highlighted.
(Enter one pattern per line.)
Enter and highlight patterns
in strict letter case.
Width of the image. (You can
skip this field if your text has
multiple lines with word wrapping).
Padding around the image.
(Extra space around the text.)
Font size.
Line height.
Select a font face for the image.
Load a custom font URL.
(To make this option work,
you must enable the custom
mode in the list above.)
Color of highlighted patterns.
Color of fill under patterns.
Color of other characters.
Color of fill under characters.
Color of image background.

Highlight Arguments in a Function

In this example, we use our pattern highlighter to add coloring to a Python code snippet that solves the Tower of Hanoi problem. We use a color palette similar to the one in our text editor and display the function arguments and variables in color #fd9622 (DarkOrange) and all remaining syntactic elements in color #6cdbf2 (SkyBlue). The arguments and variables that get colored are "num_rings", "from_rod", "to_rod", and "aux_rod" and the code instantly becomes easier to read.

def towerOfHanoi(num_rings, from_rod, to_rod, aux_rod): if num_rings == 1: print(f"Move ring 1 from {from_rod} to {to_rod}") return towerOfHanoi(num_rings - 1, from_rod, aux_rod, to_rod) print(f"Move ring {num_rings} from {from_rod} to {to_rod}") towerOfHanoi(num_rings - 1, aux_rod, to_rod, from_rod) num_rings = 2 towerOfHanoi(num_rings, 'left', 'right', 'middle')
Required options
These options will be used automatically if you select this example.
This example will reset all options to their
default values before applying new ones.
Enter all patterns and strings
to highlight.
(Enter one pattern per line.)
Enter and highlight patterns
in strict letter case.
Width of the image. (You can
skip this field if your text has
multiple lines with word wrapping).
Padding around the image.
(Extra space around the text.)
Font size.
Line height.
Select a font face for the image.
Load a custom font URL.
(To make this option work,
you must enable the custom
mode in the list above.)
Color of highlighted patterns.
Color of fill under patterns.
Color of other characters.
Color of fill under characters.
Color of image background.

Highlight Chemical Elements

In this example, we emphasize various chemical elements, such as carbon (C) and hydrogen (H), and showcase their presence in the compounds ethane (C2H6) and propane (C3H8) by using distinct colors. To assign unique colors to these elements, we directly specify individual colors for each pattern in the pattern list and mark carbon with the color crimson and hydrogen with the color blue.

The combination of carbon (C) and hydrogen (H) forms a hydrocarbon, which is a class of organic compounds. Hydrocarbons are abundant in petroleum and natural gas, and they serve as important energy sources. Ethane (C2H6) and propane (C3H8) are examples of simple hydrocarbons that are commonly used as fuels for heating and cooking.
Required options
These options will be used automatically if you select this example.
This example will reset all options to their
default values before applying new ones.
Enter all patterns and strings
to highlight.
(Enter one pattern per line.)
Enter and highlight patterns
in strict letter case.
Width of the image. (You can
skip this field if your text has
multiple lines with word wrapping).
Padding around the image.
(Extra space around the text.)
Font size.
Line height.
Select a font face for the image.
Load a custom font URL.
(To make this option work,
you must enable the custom
mode in the list above.)
Color of highlighted patterns.
Color of fill under patterns.
Color of other characters.
Color of fill under characters.
Color of image background.

Highlight Patterns in Lyrics

In this example, we color various patterns in the lyrics of the song "Three Little Birds" by Bob Marley & The Wailers. We first color all text characters in the color "peru". Then, we make two exceptions: we set the foreground color for all vowels to the color "blue" and we mark all pairs of consecutive vowels (such as "ee", "oo", "ie", etc.) with a skyblue background color via the advanced pattern rule "pattern = text-color/background-color".

Rise up this mornin' Smile with the risin' sun Three little birds Pitched by my doorstep Singin' sweet songs Of melodies pure and true Sayin', "This is my message to you, whoo-hoo"
Required options
These options will be used automatically if you select this example.
This example will reset all options to their
default values before applying new ones.
Enter patterns and substrings
that should not be highlighted.
(Enter one pattern per line.)
Enter and highlight patterns
in strict letter case.
Width of the image. (You can
skip this field if your text has
multiple lines with word wrapping).
Padding around the image.
(Extra space around the text.)
Font size.
Line height.
Select a font face for the image.
Load a custom font URL.
(To make this option work,
you must enable the custom
mode in the list above.)
Color of highlighted patterns.
Color of fill under patterns.
Color of other characters.
Color of fill under characters.
Color of image background.

Pro tips Master online text 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://onlinetexttools.com/highlight-patterns-in-text?input=The%20scarlet%20sunset%20painted%20the%20sky%20with%20shades%20of%20orange%20and%20red.%20A%20caravan%20of%20boats%20sailed%20peacefully%20on%20the%20tranquil%20waters%2C%20swaying%20gently%20to%20the%20rhythm%20of%20the%20waves.%20Like%20cars%20carrying%20passengers%2C%20the%20boats%20were%20carrying%20dreams%20and%20hopes.%20As%20the%20sun%20went%20down%2C%20people%20gathered%20around%2C%20discarding%20their%20worries%20and%20troubles.%20They%20watched%20in%20awe%20as%20the%20sky%20turned%20into%20a%20canvas%20of%20beauty%20and%20serenity.&highlight-certain-letters=true&highlight-letters=sun%250Acar&case-sensitive=false&width=960&font-size=42&line-height=48&padding=20&typeface=monospace&highlighted-letter-color=mediumvioletred&highlighted-background-color=lightpink&other-letter-color=black&other-background-color=moccasin&background=moccasin

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Add color to letters in text.

Color Words in Text

Add color to words in text.

Color Sentences in Text

Add color to sentences in text.

Color Paragraphs in Text

Add color to paragraphs in text.

Add Fuzziness to Text

Add slight perturbations to the given text.

Generate Glitch Text

Mess up characters in your text.

Generate Random Text

Generate text using random words.

Generate Lorem Ipsum Text

Generate lorem ipsum placeholder text.

Create a Crossword Puzzle

Generate a crossword puzzle from the given words.

Convert Text to Braille

Convert English text to Braille writing system.

Convert Braille to Text

Convert Braille symbols to English text.

Convert Text to Code Points

Convert text characters to their corresponding code points.

Convert Code Points to Text

Convert numeric character code points to text.

Convert CSV to Text Columns

Convert CSV data to plain text columns.

Convert Text Columns to CSV

Convert plain text columns to a CSV file.

Generate Text Trigrams

Create a list of all 3-grams.

Convert Text to a Number

Encode the entire text to a single number.

Convert a Number to Text

Decode text that was encoded as a number back to text.

Chunkify Text

Divide text into chunks of certain size.

Format Text

Apply formatting and modification functions to text.

Find the Number of Symbols in Text

Count the number of punctuation marks and other sybmols in text.

Find the Number of Letters in Text

Count the number of letters in text.

Find the Number of Sentences in Text

Count the number of sentences in text.

Find the Number of Paragraphs in Text

Count the number of paragraphs in text.

Transform Text

Apply text transformation rules to any text.

Find Patterns in Text

Analyze text for interesting patterns.

Add Diacritics to Text

Add accent marks to text letters.

Enumerate Letters

Add a counter before every letter in text.

Enumerate Words

Add a counter before every word in text.

Enumerate Sentences

Add a counter before every sentence in text.

Enumerate Paragraphs

Add a counter before every paragraph in text.

Interweave Text Fragments

Interleave the letters or words of the given text fragments.

Randomize Letter Spacing

Mess up the spacing between letters in any text.

Find All Email Addresses in Text

Extract all emails from text.

Find All Web Addresses in Text

Extract all URLs from text.

Find All Numbers in Text

Extract all numbers from text.

Find All Countries in Text

Extract all countries from text.

Find All Cities in Text

Extract all cities from text.

Encode Text to Punycode

Convert text to punycode.

Decode Punycode to Text

Convert punycode to text.

Convert Text to Baudot Code

Encode text to Baudot encoding.

Convert Baudot Code to Text

Decode Baudot-encoded text.

Convert Text to Base32

Encode text to base32 encoding.

Convert Base32 to Text

Decode base32-encoded text.

Convert Text to Base45

Encode text to base45 encoding.

Convert Base45 to Text

Decode base45-encoded text.

Convert Text to Base58

Encode text to base58 encoding.

Convert Base58 to Text

Decode base58-encoded text.

Convert Text to Base85

Encode text to Ascii85 encoding.

Convert Base85 to Text

Decode Ascii85-encoded text.

Convert Text to Base65536

Encode text to base65536 encoding.

Convert Base65536 to Text

Decode base65536-encoded text.

Convert Text to Nettext

Encode text to nettext encoding.

Convert Nettext to Text

Decode nettext-encoded text.

Convert Text to Speech

Convert written text into natural sounding voice.

Convert Speech to Text

Convert a voice recording to text.

UTF8-encode Text

Encode text to UTF8 encoding.

UTF8-decode Text

Decode UTF8-encoded text.

UTF16-encode Text

Encode text to UTF16 encoding.

UTF16-decode Text

Decode UTF8-encoded text.

UTF32-encode Text

Encode text to UTF32 encoding.

UTF32-decode Text

Decode UTF32-encoded text.

IDN-encode Text

Encode text to IDN.

IDN-decode Text

Decode IDN-encoded text.

Uuencode Text

Convert text to Unix-to-Unix encoding.

Uudecode Text

Decode Unix-to-Unix-encoded text.

Xxencode Text

Convert text to Xxencoding.

Xxdecode Text

Decode Xxencoded text.

Convert Text to Quoted Printable

Encode text to QP encoding.

Convert Quoted Printable to Text

Decode QP-encoded text.

Strip HTML Tags from Text

Remove all HTML tags from Text.

Strip XML Tags from Text

Remove all XML tags from Text.

Remove Carriage Returns from Text

Remove new line symbols from the end of each text line.

Compare Text

Find the difference between two text fragments.

Create Text Typos

Generate various text typos.

Create a Mirror Copy of Text

Generate a mirror reflection of text.

Cut Text

Cut out a piece of text.

Grep Text

Grep text for regular expression matches.

Head Text

Extract first symbols, words, or lines from text.

Tail Text

Extract last symbols, words, or lines from text

Generate Text Mnemonic

Return the first letter of each word in text.

Duplicate Paragraphs in Text

Make every paragraph to be two paragraphs in the given text.

Create a Word Cloud

Create an image from all words in text.

Create a Letter Circle

Create a circle from all letters in text.

Create a Letter Spiral

Create a spiral from all letters in text.

Create a Word Circle

Create a circle from all words in text.

Create a Letter Matrix

Create a matrix of any dimensions from letters in text.

Create a Word Matrix

Create a matrix of any dimensions from words in text.

Create a Word Spiral

Create a spiral from all words in text.

Split Words into Syllables

Split the input text into syllables.

Draw LCD Text

Write any text on an LCD display (with LCD font).

Draw a 2D Text

Convert text to 2-dimensional drawing.

Draw a 3D Text

Convert text to 3-dimensional drawing.

Create a Text Marquee

Create a horizontally or vertically scrolling text.

Animate Text

Create a GIF animation of a text message.

Slowly Reveal Text Message

Create a GIF animation that slowly reveals a text message.

Mojibake Text

Decode text using the wrong encoding and create garbled text.

Unbake Mojibaked Text

Try to find original text from garbled mojibaked text.

Obfuscate Text

Make text harder to read.

Print the Alphabet

Generate the entire alphabet from a to z.

Randomize the Alphabet

Print the alphabet in random order.

Remove Curse Words from Text

Delete swear words from text.

Edit Text

Edit text in a neat browser-based editor.


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