100% Free

Bag fit checker widget for your travel blog

Let readers check if their bag fits as a carry-on, right inside your post. Pre-configure dimensions for bag reviews. 75 airlines, privacy-friendly, free forever.

ShareXFBPinRedditHN

Try it live

Customize

Theme

Embed code

Copy and paste this into your blog post or page HTML.

What is this embed widget?

  • Instant fit check against 75 airlines. Readers enter bag dimensions or tap a preset and see which airlines accept their bag
  • Pre-configurable via URL. Set default bag dimensions so the widget loads with results already visible, perfect for bag-review posts
  • Auto-updates when airline policies change, so embedded widgets never go stale
  • Privacy-friendly. No cookies, no visitor analytics. We log which domains embed the widget so we can measure reach
  • Under 50 KB total load. Lazy iframe that will not hurt your Core Web Vitals
  • Free forever. No accounts, no API keys, no usage limits, no catch

How to add the widget to your site

1

Choose settings

Pick a bag preset or enter custom dimensions and choose a theme using the customizer above.

2

Copy the code

Click Copy to grab the two-line embed snippet.

3

Paste into your site

Use a Custom HTML block in WordPress, a Code block in Squarespace, or paste into any HTML template.

4

Publish and verify

The iframe resizes automatically. No extra setup required.

Why trust this data?

Hand-verified sources

Every dimension is checked against the airline's official baggage policy page. Each record includes a "last verified" date and a direct link to the source.

75-airline coverage

Major carriers and budget airlines across North America, Europe, Asia-Pacific, Latin America, and the Middle East. New airlines added as data is verified.

Privacy-friendly

The widget sets no cookies and runs no visitor analytics. A single beacon logs the embedding domain name so we can measure reach. No personal data is collected.

See the full dataset and comparison tool at vientapps.com/tools/carry-on-size.

Usage terms

  • The "Powered by Vientapps" attribution link must remain visible. It funds ongoing data verification.
  • Free for any site: personal blogs, commercial publications, news outlets, and educational resources.
  • Privacy-friendly. The widget logs the embedding domain name for usage metrics. No visitor data, cookies, or personal information is collected.
  • Not a guarantee. The fit check compares published maximum dimensions. Gate sizers vary, and gate agents have discretion. Always verify with the airline before flying.
  • Found a data error? Email [email protected] and we will correct it promptly.

Frequently asked questions

How does the bag fit widget work?

Readers enter their bag's length, width, and height. The widget compares those dimensions against every airline's published carry-on limits and shows a scrollable list of airlines with a green "Fits" or red "Too big" badge. It sorts dimensions largest-to-smallest so bag orientation does not matter.

Can I pre-configure bag dimensions for a specific bag?

Yes. Add l, w, h, and unit parameters to the embed URL (for example, l=22&w=14&h=9&unit=in). The widget will load with those dimensions already filled in and the check will run automatically. This is ideal for bag-review posts where you want to show readers exactly which airlines accept the bag you are reviewing.

Will this widget slow down my site?

The widget loads inside a lazy-loaded iframe that totals under 50 KB. It makes zero external requests beyond the initial page load, so it will not affect your Core Web Vitals or Lighthouse score.

Does it work on WordPress?

Yes. Open the block editor, add a Custom HTML block, and paste the embed code. The widget renders immediately in the preview and on your published page.

Will the airline data stay current?

Yes. The widget pulls from a verified database of 75 airlines that is updated regularly. When we update the data, every embedded widget reflects the change automatically.

Can I customize the colors?

Yes. The widget supports light and dark themes, a custom accent color via hex code to match your brand, adjustable corner radius, and a compact mode for sidebar embeds. Use the customizer on this page to configure all options visually.

Do I need to create an account or pay anything?

No. The widget is completely free with no registration, API keys, or usage limits. The only data collected is the domain name where the widget is embedded, so we can measure reach. Paste the code and it works.

Can I remove the Powered by Vientapps link?

The attribution link must remain visible. It is a small, unobtrusive footer that helps us fund ongoing data verification and maintenance.

Related carry-on tools

Use the full tool, the per-airline reference widget, or explore our guides.

More widgets coming soon

We are building embeddable versions of our other travel tools. Same approach: free, privacy-friendly, always current.

Cruise cabin size checker

Cabin bag limits by cruise line

Checked bag fee calculator

First, second, overweight fees

Airline comparison table

Side-by-side baggage policies