how to prevent email clients add my images as attachments - html

Question

I am creating an html email template that will hopefully show on mostly used desktop and web email clients (such as Outlook, Gmail or Yahoo).
I'm having a hard time on doing an html email template where my images are being considered as attachments. I'm assuming it's possible to not show them as attachments since most websites that I am subscribed of such as Pinterest, they have images on their html email templates, but it doesn't show them as attachments too.
Here's a code I am testing
<table align="center">
<tbody>
<tr>
<td>
<table>
<tbody>
<tr>
<td>
<img src="#web/mail/img/email-for-first-users-header.jpg" style="width:auto; height: auto; border-style: none; display: block;"/></td>
</tr>
</tbody>
</table>
</td>
</tr>
<tr>
<td>
<table>
<tbody>
<tr>
<td>
<h2>Hi, non-user's name!</h2>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
What I basically want to achieve is that, the email clients will not add my images on the attachments area.

Answer 1

Embedding an image in an email first requires that you have a version of said image as a base64 encoded string. Once your image is encoded, jump into your template, or whatever HTML you’re sending out, and embed it using a standard HTML image tag:
<img alt="My Image" src="data:image/jpeg;base64,/9j/4S/+RXhpZgAATU0AKgAAAAgACAESAAMAENkDZ5u8/61a+X...more encoding" />
Then you’re done! Send away.