Every new California business filing, every dayStackBlitz
StackBlitz is a collaborative browser-based IDE for web developers, eliminating local configuration. The company is headquartered at 2443 Fillmore St, San Francisco, CA, matching the filing address. Its website provides contact and privacy emails.
Filed July 15, 2025 · San Francisco, CA · San Francisco County
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California Secretary of State (bizfile Online) · Entity 20251774158 · Retrieved June 12, 2026
About StackBlitz
StackBlitz, Inc. filed in California on July 15, 2025, as an online IDE software development tools company based in San Francisco. Its domain was registered over 11 years before the filing, on December 17, 2013, via 1API GmbH, and the website matches the filing name and address. The site is built with Astro, a modern web framework. No annual report or EIN is on file yet. We estimate the company's revenue range is $1 million to $10 million and its employee range is 6 to 25, with an online-only footprint.
- Domain registered 4,228 days before the California filing, indicating a long-established online presence.
- Website built with Astro, a modern web framework, suggesting a technically sophisticated site.
- Website identity confirmed, matching the company name and San Francisco address.
- No annual report or EIN on file yet, indicating a newly registered entity.
- We estimate revenue of $1M-$10M and 6-25 employees, with an online-only footprint.
Compiled from the state record, the company's public web presence, and our own research; revenue, employee, and footprint figures are estimates, not verified financials. Updated August 23, 2026.
One of 78 new businesses registered in San Francisco in July 2025, and the only software development tools business registered there that month.
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Filing Details
Verified Business Profile
Contact Information
Verified Website Profile
We matched this business to its website and pulled the domain's registration (WHOIS) record. Domain age is one of the strongest signals that a filing is a truly new business and not a re-filing or paperwork change.
Frequently Asked Questions
When was StackBlitz registered?
StackBlitz was registered as Corp on July 15, 2025 in California.
Where is StackBlitz located?
StackBlitz is based in San Francisco, CA, 94115, in San Francisco County.
What type of business is StackBlitz?
StackBlitz is classified as a software development tools business (online ide).
Does StackBlitz have an EIN on file?
No EIN was found on file for StackBlitz at the time of registration.
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