SafeSearch can help you block inappropriate or explicit images from your Google Search results. The SafeSearch filter isn't 100% accurate, but it helps you avoid most violent and adult content.
Step 1: Open Google Chrome;
Step 2: Click "Settings" from the bottom-right corner of the search page;
Step 3: Click "Search settings" from the list;
Step 4: Check "Turn on SafeSearch" in the "SafeSearch Filters" section;
Step 5: Move down to the bottom of the page, click the "Save" button.