Tumblr does not allow JavaScript on blog pages. Before you copy the code, open the widget in SnapWidget, turn off Responsive and click Install Widget. If the code still has
<script> or <link> lines, delete them and keep only the <iframe> line.In SnapWidget
- Create your widget, or open an existing widget from your dashboard.
- Click Install Widget.
- In the Install Widget window, click Copy Code.
In Tumblr
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In Tumblr, open Settings and select your blog. Under Custom theme, turn on Enable custom theme. Then click Edit theme.

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In the theme editor sidebar, click Add a page.

- Select Standard Layout. Enter the page URL and a Page Title, and turn on Show a link to this page.
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Paste your code into the page body.

- Click Save.