Tools
Handy tools you can use without logging in. What you type is processed in your browser and is mostly never sent to the server.
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Hangul Fixer
Fix Korean text and file names made on a Mac that appear as separated jamo or garbled on Windows. Supports NFD↔NFC conversion, jamo joining/splitting, batch file-name conversion and encoding-mismatch recovery.
Character Counter
Counts characters and UTF-8 / EUC-KR bytes as you type. Handy for cover letters and text-message limits.
Text Cleaner
Remove line breaks, tidy spaces, drop duplicate lines, sort lines, convert full/half-width and straighten quotes in one click. Made for cleaning up copied text.
Markdown Preview
Write Markdown and see the result right next to it. Headings, lists, tables, code, quotes and checkboxes are supported, and you can copy the finished HTML. Optionally preview it with the same renderer the boards use (converted on the server).
Subtitle Editor (SRT · VTT)
Shift a subtitle file’s timing, stretch it to match a video’s frame rate, or fix everything by matching just two scenes. Also converts SRT ↔ VTT, wraps lines, strips tags and flags overlaps and subtitles that flash by too fast. Files are never uploaded.
Typing Practice
Measure your typing speed with proverbs, short sentences and longer passages — keystrokes per minute for Korean, WPM for English — plus accuracy and the characters you got wrong. You can also practise on your own text, and nothing you type is sent to a server.
Text to Speech
Reads your text aloud. Choose the speed, pitch and volume; it plays sentence by sentence and highlights the one being read. Only voices installed on your device are used by default, so your text does not leave it.
Word cards
Paste a front/back word list and review it with Leitner boxes — cards you know come back later, cards you miss come back soon. Your decks and progress stay in this browser.
Font preview
Upload a font file from your computer (TTF, OTF, WOFF, WOFF2) to see how text looks and how much Hangul it supports. The file never goes to a server.
Symbols & Fancy Text
Click-to-copy special characters and emoji, plus a converter that turns English text into styles like 𝐁𝐨𝐥𝐝 or 𝓢𝓬𝓻𝓲𝓹𝓽.
Use offline too
When turned on, tool pages and the files they need are saved on this device so the calculation and conversion tools work without internet. You can also install just the tools on your home screen.
Saving needs a few MB after you turn it on (large tools add more when used). Login information is never saved, and you can turn it off any time. Tools that need the server, such as the QR maker, web page checker, My IP and secret notes, do not work offline.