Tidy up text

Convert letters, numbers and katakana between full-width and half-width in one go.

Convert between hiragana, katakana and half-width katakana in one go. Kanji, letters and numbers are left as they are.

See how many characters you have left before the limit on X, Instagram, YouTube and more, counted the way each platform does. Also shows characters, lines, words and bytes.

Pretty-print JSON or minify it to one line. If there's a mistake, it shows you where.

Encode text and symbols into a URL-safe form (like %C3%A9) or decode it back to the original text.

Choose the length and characters to make hard-to-guess passwords on the spot.

Compare two texts and highlight the differences, down to the word and character.

Tap to copy hearts, arrows, box drawing, brackets, units and other symbols. You can also search them by name.

Detect a CSV’s encoding and convert it to UTF-8 (with BOM) or Shift_JIS.

Encode text or files such as images to Base64, or decode Base64 back to the original text or file.

Paste a JWT to read its header and payload and see the expiry as a date. Enter a key to check the signature too.

Test a regular expression and see the matches highlighted, along with what each group captured and the result of a replacement.

Count how many sheets and lines a Japanese text fills on 400-character manuscript paper, including line breaks and hanging punctuation.

Replace many words or phrases at once. Supports regular expressions and shows how many were replaced.

Enter a number to instantly convert and copy it as circled numbers (①–㊿), black circled numbers or Roman numerals (XII, Ⅻ). Also turns Roman numerals into numbers and makes numbered sequences.

Make UUIDs (v4 or v7) in bulk. Switch to uppercase, no hyphens, or { } braces.

Remove duplicate and blank lines, and sort lines alphabetically or by number.

Paste the script of a speech or presentation to see how long it takes to read aloud, in minutes and seconds.

Change text to UPPERCASE, lowercase or Title Case, and variable names to camelCase, snake_case and more, instantly.