¶Online text tools for developers

Searchable ASCII reference table (decimal, hex, octal, character), in your browser.

Turn text into large ASCII letters (figlet banner style), right in your browser.

Bold the start of each word to read faster (bionic reading), in your browser.

Convert text to camelCase, snake_case, kebab-case, CONSTANT_CASE, and more.

Count characters, words, sentences, lines and paragraphs of pasted text in real time, in your browser.

Turn a slug (my-url-title) into readable text (My Url Title), right in your browser.

Extract all email addresses from a text, deduplicated and sorted, in your browser.

Extract all URLs from a text, deduplicated and sorted, right in your browser.

Find and replace in text, with regular-expression support, in your browser.

Spot deceptive Unicode characters (confusables) in a text to detect phishing/spoofing, in your browser.

Convert text to leetspeak (l33t) and back, right in your browser.

Add or remove line numbers from a text, with adjustable separator and start.

Generate placeholder text (lorem ipsum) by paragraphs for your mockups.

Spell text using the NATO phonetic alphabet (Alpha, Bravo, Charlie…).

Generate the n-grams (bigrams, trigrams…) of a text, by word or character, in your browser.

Write a number in words, in French and English, right in your browser.

Turn a word into a numeronym: first letter + count + last letter (e.g. i18n).

Add a prefix and/or suffix to each line of a text, right in your browser.

Estimate the reading and speaking time of a text, right in your browser.

Generate random strings that match a regular expression (test data), in your browser.

Remove accents from text (é → e, ç → c) for an ASCII result.

Remove duplicate lines from text, with sort and case options, in your browser.

Remove all emojis from a text to clean it up, right in your browser.

Strip HTML tags from a text to keep only the plain text, in your browser.

Remove or replace line breaks to join lines of text, in your browser.

Reverse a text by characters, words or lines.

Reverse the order of words in a text (last word first), in your browser.

Encode and decode text with ROT13 or ROT47 (the operation is its own inverse), in your browser.

Compute the Shannon entropy (bits/char and total) of a text or password, in your browser.

Randomly shuffle the lines of a text (fair shuffle), right in your browser.

Generate Unicode small caps text (ꜱᴍᴀʟʟ ᴄᴀᴘꜱ) for your bios and social media.

Sort, reverse, deduplicate and clean a list of lines.

Alternate uppercase and lowercase for a mocking effect (SpongeBob meme), in your browser.

Compare two texts and compute their similarity (Levenshtein distance, percentage), in your browser.

Generate superscript (x²) or subscript (H₂O) text with Unicode characters, in your browser.

Detect and mask personal data in a text (emails, phones, IPs, IBANs, cards) for GDPR, in your browser.

Compare two texts and see additions and deletions line by line.

Repeat a text N times, with an optional separator between occurrences.

Count characters, words, lines and bytes of a text in real time.

Force line wrapping of text at a given width (hard wrap), right in your browser.

Estimate the number of tokens (and characters/words) of a text for LLMs (GPT, Claude), in your browser.

Convert text to Unicode escape sequences (\uXXXX) and back.

Generate fancy Unicode text (𝐛𝐨𝐥𝐝, 𝑖𝑡𝑎𝑙𝑖𝑐, 𝓈𝒸𝓇𝒾𝓅𝓉) for your bios and social media.

Flip text upside down (inverted Unicode characters) for your bios and social media.

Clean up extra spaces, tabs and invisible characters from a text.

Count the frequency of each word in a text, sorted from most to least frequent.

Convert a number written in words into digits (French and English), in your browser.

Generate glitchy “Zalgo” text (combining characters) for a creepy effect, in your browser.