The Oxford Text Checker will check the vocabulary in any text against one of three wordlists. You can find out which words in a text are part of:
To use the Text Checker, first choose which wordlist you want to check against. Next, type or paste your text into the box, then click "Check Text". When checking against the Oxford wordlists, the words which are not part of the selected wordlist will be highlighted in red. For the Academic Word List, any words that are on the list will be highlighted in red. The Text Checker will also tell you what percentage of the words in the text are/are not part of the wordlist. You can use this information to judge the difficulty of a text. When checking against the Oxford keywords lists, the more words highlighted in red, the more difficult the text.
The Text Checker will automatically ignore any numbers and symbols. If there are any proper names in your text, such as Oxford or Smith, you can enter them in the "ignore" box. This will make sure that the Text Checker does not mistake them for difficult words and highlight them in red.