7 useful websites you didn't know existed

This is a collection of unique websites that you may not have seen and that are worth visiting. So check out these 7 super interesting and useful internet pages.

This is a collection of unique websites that you may not have seen and that are worth visiting. So check out these 7 super interesting and useful internet pages.

1.Travel over time

Here you will find detailed information about how the world map has been changing since 3000 BC With a single click you can discover all about the kingdoms, empires, countries or different historical eras.

2. Receive notifications

This little website tracks if your emails were opened and read by the recipient. It also provides you with your IP, location, browser details and more. Enter HERE.

3. Print what you want

This useful website allows you to print pages omitting advertising, banners and other unnecessary information.
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4. Randomly useful website

Do not feel guilty for navigating without meaning and wasting time. With each click, this page will take you to a really useful website. You don't even suspect that you need things like the ones suggested by this page!

5. Make screenshots online

This service allows you to save screenshots of a full page, not just the part visible on your screen. Enter the URL in the special section and save the .jpg image that the page throws as a result (other formats are also available). If the process takes too long, you can send the image to your email.

6. Learn courses

With Khan Academy, you can take courses in a lot of subjects, ideal if you fall behind in college or if you just want to extend your knowledge. It has a very nice and minimalistic interface.

7. Create a sound environment

And with Softmurmur you can create a perfect sound environment to relax or simulate a situation, since it has sounded like rain, storm, waves, wind, among others. It also has a mobile app.