Best TLDs for Startups におすすめのTLD
Embed This Widget
Add the script tag and a data attribute to embed this widget.
Embed via iframe for maximum compatibility.
<iframe src="https://tldfyi.com/iframe/entity//" width="420" height="400" frameborder="0" style="border:0;border-radius:10px;max-width:100%" loading="lazy"></iframe>Paste this URL in WordPress, Medium, or any oEmbed-compatible platform.
https://tldfyi.com/entity//Add a dynamic SVG badge to your README or docs.
[](https://tldfyi.com/entity//)Use the native HTML custom element.
Find the perfect domain extension for your startup
TLD guide for early-stage startups, covering .io, .co, .app, .com, and investor-perception extension trade-offs.
おすすめTLD
1
.com
The gold standard for credibility and universal recognition.
Maximum trust and brand recognition
Best for fundraising and investor perception
Highest resale value
Most desirable names are taken
Premium aftermarket prices
2
.io
The tech startup favorite, widely recognized in the developer community.
Strong tech brand signal
Good name availability
Popular with investors in tech
Less recognized outside tech
Higher renewal prices
3
.co
Short and professional alternative when .com is unavailable.
Short and memorable
Implies 'company'
Good availability
Can be confused with .com
Not as universally trusted
4
.app
Ideal for mobile-first startups with built-in HTTPS requirement.
Clearly signals an application
HTTPS enforced by default
Google-operated registry
Narrower use case
Relatively new TLD
5
.dev
Great for developer-focused startups with forced HTTPS.
Developer community recognition
HTTPS enforced
Clean and modern
Too technical for consumer brands
Limited audience