For website Text-to-Speech we recommend you download Select and SpeakText with emphasis and use in conjunction with Google Chrome.
To install Select and Speak open your Google Chrome browser then click here, then click the Select and Speak button, then click the Add Extension button.
Once installed simply highlight the text you would like to hear, then click the speaker icon next to the search bar, in the top right of the browser window.
Please ensure you have a speaker connected and the sound is on and turned up. Alternatively you could use ear or headphones.