Count, clean, transform, encode and analize text at speed. There are 57 of them here, and every one runs inside your browser — no upload, no queue, no account.

Everything in this category

Add Line Numbers — Prefix every line with a number, in whatever style you need.
Add Prefix and Suffix — Wrap every line with text — quotes, commas, tags, bullets.
aLtErNaTiNg CaSe — Turn text into mocking, alternating capitals.
Atbash Cipher — Mirror the alphabet — A becomes Z, B becomes Y. Its own inverse.
Caesar Cipher — Shift every letter by a chosen amount to encode or decode a message.
camelCase Converter — Turn any phrase into camelCase for variables and keys.
Capitalize Every Word — Put a capital letter at the start of every single word.
Character Counter — Count characters with and without spaces, plus limits for common platforms.
Character Frequency Counter — Count how often each character appears — handy for puzzles and ciphers.
CONSTANT_CASE Converter — Turn any phrase into SCREAMING_SNAKE_CASE for constants and env vars.
dot.case Converter — Turn any phrase into dot.case for config keys and namespaces.
Duplicate Word Finder — Catch accidentally repeated words — the the, and and — that spellcheckers walk straight past.
Extract Email Addresses — Pull every email address out of a block of text.
Extract Numbers — Pull every number out of text, and total them up.
Extract URLs — Pull every link out of a block of text.
Fancy Text Generator — Turn plain text into bold, italic, script and monospace Unicode styles.
Find and Replace — Swap text across your whole document, with optional regex.
Inverse Case Converter — Swap every uppercase letter for lowercase and vice versa.
Invisible Character Detector — Find the zero-width and look-alike characters hiding in pasted text — and strip them out.
kebab-case Converter — Turn any phrase into kebab-case for URLs, CSS and file names.
Leetspeak Converter — Turn plain text into 1337 5p34k.
Line Counter — Count total, non-empty, unique and duplicate lines in any list.
Lowercase Converter — Convert any text to lowercase instantly.
Morse Code Translator — Translate between plain text and Morse code, both directions.
NATO Phonetic Alphabet — Spell anything out as Alfa Bravo Charlie — for phone calls that keep going wrong.
Number Formatter — Add thousands separators, fix decimal places, or convert between number formats used in different countries.
Palindrome Checker — Check whether a word or phrase reads the same backwards.
PascalCase Converter — Turn any phrase into PascalCase for classes and components.
Readability Checker — Flesch reading ease, grade level and the numbers behind them.
Reading Time Calculator — Estimate how long your text takes to read at any reading speed.
Remove Accents — Convert accented characters to their plain ASCII equivalents.
Remove Duplicate Lines — Strip repeated lines from a list, keeping the order you had.
Remove Empty Lines — Delete blank lines, or collapse runs of them into one.
Remove Extra Spaces — Collapse double spaces and trim the edges of every line.
Remove Line Breaks — Join wrapped text back into one flowing paragraph.
Remove Punctuation — Strip punctuation and symbols, leaving letters, numbers and spaces.
Reverse Text — Flip text backwards by character, word or line.
ROT13 Encoder — Apply the classic ROT13 letter rotation — run it twice to undo it.
Sentence Case Converter — Capitalize the first letter of every sentence and lowercase the rest.
Sentence Counter — Count sentences and see average sentence and word length.
Sentence Splitter — Break a paragraph into one sentence per line — for subtitles, translation, or reading it back critically.
Shuffle Lines — Randomize the order of a list — draws, playlists, running orders.
snake_case Converter — Turn any phrase into snake_case for databases and Python.
Sort Lines — Alphabetise or numerically sort any list of lines.
Speaking Time Calculator — Work out how long a script takes to say out loud — for talks, videos and voiceovers.
Strikethrough Text — Add s̶t̶r̶i̶k̶e̶t̶h̶r̶o̶u̶g̶h̶ or underline that survives a copy-paste.
Text Diff Checker — Compare two blocks of text and see exactly what changed, line by line.
Text Repeater — Repeat any text as many times as you like.
Text to Binary — Convert text into 8-bit binary, and binary back into text.
Text Truncator — Cut text to a character or word limit without chopping a word in half.
Title Case Converter — Capitalize headlines properly, leaving small words alone.
Trim Whitespace — Remove leading and trailing whitespace from every line.
Uppercase Converter — Convert any text to UPPERCASE instantly.
Upside Down Text — Flip text ʇxǝʇ using Unicode look-alikes.
Word Counter — Count words, characters, sentences, paragraphs and reading time as you type.
Word Frequency Counter — See which words you use most, with counts and percentages.
Word Wrap — Hard-wrap text to a fixed column width, with optional indent and hanging indent.