For publishers
Free travel plug checker for your site
Drop a plug, voltage, and frequency checker straight into your travel guide or blog post. Readers pick their home country and destination and see at a glance whether they need an adapter or a converter. Click any plug icon to open the full country-pair guide. It is free, there is no sign-up, and it works on any platform that allows an iframe.
Configure your embed
Pre-set the home or destination country, pick a theme, and choose an accent colour. The snippet below updates live, copy it when you are happy with the preview.
Default: detected automatically from each visitor's browser and IP.
Default: visitor picks. Pre-set this for destination-specific posts (e.g. a Japan guide).
Used for the brand dot, the select focus border, and tile focus outlines.
<iframe src="https://www.globalplugs.com/embed/plug-checker"
title="Travel plug and voltage checker" width="100%" height="500"
style="border:0;max-width:440px;border-radius:14px" loading="lazy"></iframe>
<p style="font:13px/1.5 sans-serif">
<a href="https://www.globalplugs.com/" rel="noopener">Travel plug & voltage checker</a> by Global Plugs
</p>How to add it
- Use the configurator above to grab your snippet.
- Paste it into a custom HTML or embed block on your page wherever the widget should appear.
- Leave the short credit line under the iframe in place. That is the only condition for using the widget for free.
Parameter reference
The configurator writes these for you, but you can also hand-edit the iframe URL.
| Parameter | Effect | Example |
|---|---|---|
| from | Pre-select the home country. Two-letter country code. Omit to auto-detect via browser locale and IP. | ?from=us |
| to | Pre-select the destination country. Two-letter country code. Omit to let the visitor pick. | ?to=jp |
| lock | Lock whichever fields are pre-set (from, to, or both). Visitors cannot change them. | ?to=jp&lock=1 |
| theme | light or dark (default). | ?theme=light |
| accent | Accent hex colour (3 or 6 chars, # optional). Affects brand dot, select focus, and tile focus outlines. | ?accent=ff6b35 |
Size and placement
The widget is designed for 440 pixels wide and 500 pixels tall. To fit a sidebar or a wide content column, change the width, height, and max-width on the iframe. On mobile the iframe scales fluidly to the container width.
Platform instructions
The snippet is plain HTML, so it works anywhere a platform allows a custom HTML or embed block.
WordPress
In the block editor, add a Custom HTML block and paste the snippet. In the classic editor, switch to the Text tab and paste anywhere in the post body.
Ghost
Add an HTML card (press / and choose HTML), then paste.
Substack
Use the embed block, choose Custom HTML, and paste. Newsletter previews render the iframe in a fallback link, the web version renders it normally.
Squarespace
Add a Code block, set the language to HTML, paste the snippet, and save.
Webflow
Drop an Embed element into the layout, paste, and publish.
Plain HTML / static sites
Paste anywhere inside the page body. No script tags or dependencies needed.
Why add it
- It answers a real question every traveller has, without sending readers off your page to look it up.
- The data covers every country and is kept current with official plug, voltage, and frequency specifications.
- It is lightweight and loads lazily, so it will not slow your page down.
- Nothing to maintain. Updates happen on our side and reach every embed automatically.
Questions
Is it really free?
Yes. The only condition is keeping the visible credit link to globalplugs.com that ships with the snippet.
Will it slow my site down?
No. The widget is a small static document and the iframe is set to load lazily, so it only loads when a reader scrolls near it.
Can I pre-set the destination?
Yes. Pick a destination in the configurator (or set ?to=jp on the URL) and visitors will see your country as the home and the destination you chose. They can still change either, unless you also enable Lock.
Does it match my brand colour?
The Accent colour control changes the brand dot, the select focus state, and the tile focus outline. Pick a hex value and the snippet updates automatically.
How do readers open the full guide?
Every plug icon inside the widget is a link to the full country-pair guide on globalplugs.com. Clicking any of them opens the detailed page in a new tab.
Will it detect my reader's home country?
Yes. The widget reads the visitor’s browser locale and falls back to an IP-based lookup to set the home country automatically. If you want it pinned to one country, choose it in the configurator.
Does it set cookies or track readers?
No tracking cookies and no third-party scripts. The widget caches the visitor’s last-selected country in its own localStorage so they do not have to re-pick on return visits, and nothing else.