拼写检查 is a free Chrome add-on developed by EYEYUNA. It is a handy tool for spell checking text on web pages.

Once installed, simply refresh the web page and click on the plugin icon in the top right corner to enable the add-on. When you select a portion of text on any web page, a spell check button will appear where you release the mouse.

Clicking the spell check button will analyze the selected text for spelling errors. If you click inside an input box, the add-on will automatically select all the text in the box. After the spell check process is complete, a correction box will appear on the left side of the browser. Misspelled words will be highlighted in red with an underline. Clicking on a word will display a list of suggested corrections along with their confidence levels.

If you have selected text inside an input box, you can click the "Apply Corrections" button to apply the changes to the original input box.