Find a domain →
ProductsDomain SearchName GeneratorWHOIS & Expiry LookupBulk CheckerBusiness Name CheckerName ScoreDNS ToolkitDomain HacksIdeas & extensionsName Ideas by IndustryName Ideas by StyleAll ExtensionsCompare ExtensionsLearnGuidesResearchGlossary

.com vs .io

Which extension should you choose? The short answer, the details, and a live check of both.

Updated November 2026 · Reviewed by the DomainFinch editorial team · Editorial policy

Is .com or .io better?

Quick answerIt depends on your audience. For developer tools, SaaS and technical products, .io is a credible, recognizable choice and is far easier to find short names on. For consumer brands or non-technical buyers, .com is better because it is what people type and trust. If the .com is affordable, default to .com.

.com vs .io at a glance

.com.io
RecognitionUniversal across all audiencesStrong in tech, low among general public
Typical audienceEvery industry and consumerStartups, SaaS, developer tools, games
Price tierStandardPremium
RestrictionsNoneNone
SEO / geotargetingNeutral gTLD, not geotargetedTreated as generic by Google, not geotargeted
MemorabilityPeople default to itMemorable to techies, often misheard elsewhere

Choose .com if…

  • Your customers are mainstream consumers or non-technical business buyers
  • You want a name that works on packaging, radio ads and signage without explanation
  • You prefer the lower-risk, Standard-tier renewal cost of a gTLD over a Premium ccTLD

Choose .io if…

  • You are launching a developer tool, API, open-source project or B2B SaaS
  • The short .com is only available on the aftermarket at a price you cannot justify
  • Your users are engineers who already associate .io with tech products

The details

.io earned its reputation because engineers read it as input/output, and a generation of startups and developer platforms adopted it when good .com names were scarce. Technically it is the country code of the British Indian Ocean Territory, but Google treats it as generic, so a .io site can rank worldwide without any geotargeting penalty.

Two practical differences matter more than SEO. First, cost: .io sits in a Premium tier, so annual renewals are noticeably higher than for .com, which adds up across a portfolio. Second, long-term status: the 2024 UK-Mauritius agreement on the Chagos Islands prompted debate about what could eventually happen to .io. Any change would likely be gradual, but founders planning a decades-long brand should be aware of it.

A common path is to launch on the .io, then buy the matching .com once the company can afford it and 301-redirect the .io to it. If you go that way, register the .com typo-variants you can find cheaply now, and keep email on a domain you expect to hold long term.

.com vs .io FAQ

Is .io bad for SEO?

No. Google lists .io among the country-code domains it treats as generic, so it is not geotargeted and can rank globally like a .com.

Why do tech startups use .io?

Developers read 'IO' as input/output, and short names were far easier to find on .io than on .com. Over time it became a recognized signal of a tech product.

Is .io going away because of the Chagos Islands agreement?

Nothing has been decided that removes .io for existing users, as far as is publicly known. The sovereignty change raised questions about its long-term future, so it is a factor to weigh, not a reason to panic.

Learn more

Take-aways

Downloads & exports

Generated in your browser. No account, no email, no cost.

Domain checklist (PDF)Printable 20-point naming checklistEmbed our searchFree widget for your site or blog