1. Enables accelerated human processing of DOM. 2. Displays more structure/sequence information within the current view port than any other DOM inspector available. 3. Cure-all for the pitfalls of indentation. Cross-browser bookmarklet at http://viewsourcechart.com. Check it out.
![View Source Chart – Get this Extension for 🦊 Firefox (ja)](https://cdn-ak-scissors.b.st-hatena.com/image/square/ac4c3e0a680bf36d9a32eb13f117b2595a94aeb4/height=288;version=1;width=512/https%3A%2F%2Faddons.cdn.mozilla.net%2Fuser-media%2Fpreviews%2Ffull%2F68%2F68184.png%3Fmodified%3D1530208091)