There's a difference between a genuine text-to-speech engine and just having a browser extension shout words at you. For that, Voice Dream Reader remains my top pick, though it's a paid mobile app. It handles web articles beautifully once you share a link to it. The voices are surprisingly natural, the highlighting keeps you on track, and the granular speed controls are essential. For a free, web-native option, Microsoft Edge's built-in read-aloud is shockingly good if you're on Windows. Its natural-sounding voices blow the old robotic ones out of the water. I use it for long articles when my eyes are tired.
Surprisingly, some dedicated reading apps have dropped the ball on this. Pocket's TTS feature feels like an afterthought—monotone and clunky. I've heard good things about NaturalReader's online tool, but its free tier is quite limited. Honestly, the best experience often involves a bit of setup, like pulling an article into a dedicated TTS environment rather than relying on a browser's bare-bones function. The goal is immersion, not just audio conversion.