Text Compare
Compare two texts side by side, highlighting additions and deletions in real time.
📝 檔案 A（輸入）共 0 字元
📝 檔案 B（輸入）共 0 字元
📊 檔案 A（結果）共 0 字元
📊 檔案 B（結果）共 0 字元
💡 在上方輸入或貼上兩段文字，下方會實時高亮差異。全程本地處理，文字不會上傳。快捷鍵：Ctrl / ⌘ + Enter 開始對比，Esc 清空全部。
How to use
This tool belongs to the “Utilities” category.
- 1Text to QR: paste a link or text (up to about 800 characters works best), set the size and the error-correction level L/M/Q/H, then download the image.
- 2Text compare: put the two versions in the boxes above and additions and deletions are highlighted live. Ctrl / Cmd + Enter runs it, Esc clears both.
- 3ICO maker: start from an image or straight from one to three characters or an emoji; it exports several sizes and previews the favicon.
Every PDF is handled in this tab by JavaScript. Files never leave your device and we keep no copy.
Frequently asked questions
Can I encode very long content in a QR code?
It will generate, but the module grid gets so dense that cheap printers and older cameras struggle. Shorten the link first, or split the content into several codes.
Which error-correction level should I pick?
M covers ordinary use. Choose Q or H when a logo sits on top or the code may get scratched - the same content then needs a larger image.
Is my text uploaded when comparing?
No. The comparison happens entirely in the browser; the text never leaves your device.