900.cool

Join thousands of engineers who clone and launch any website instantly with professional static hosting.

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Published on:

October 11, 2025

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900.cool application interface and features

About 900.cool

Forget everything you thought you knew about launching a website. 900.cool is the viral static hosting platform that developers, startups, and marketers are obsessing over, and for good reason. It's the secret weapon for anyone who needs to go from a simple idea to a live, professional site at breakneck speed. Tired of complex server setups, bloated dashboards, and waiting for deployments that take minutes or hours? 900.cool cuts through all the noise, offering a laser-focused, no-nonsense solution for hosting HTML, CSS, and JavaScript files. Imagine this: you finish your project, drag and drop your files (or simply paste your code), and boom—your site is live on the internet in seconds. It embodies the ultimate "clone any site, go live fast" philosophy that's taking the dev community by storm. Built by a full-stack engineer with a decade of experience, 900.cool delivers a professional, reliable, and incredibly simple hosting experience. With a generous free tier already powering thousands of viral projects, custom domain support for that premium brand feel, and a built-in editor for quick tweaks, it's no wonder everyone is talking about it. This isn't just another hosting service; it's your express lane to the internet.

Features of 900.cool

🚀 Instant Deployment

Wave goodbye to long build times and complicated CI/CD pipelines. 900.cool is engineered for speed. The moment you upload your files or paste your HTML code, your static site is processed and pushed live globally in a matter of seconds. This lightning-fast deployment cycle means you can iterate, test, and launch ideas faster than ever before, keeping pace with the demands of modern web development and marketing campaigns.

🔗 Custom URLs & Domains

Start with a clean, auto-generated URL or immediately take control of your brand's identity. 900.cool allows you to customize the access path (UUID) for your site during creation. For a truly professional presence, you can connect your own custom domain, ensuring your landing page, portfolio, or microsite carries your unique brand name, not a generic subdomain. This feature is a game-changer for startups and businesses looking to make a serious impression.

🛠️ Built-in Site Editor & Management

Your workflow doesn't end at deployment. 900.cool includes a powerful project management dashboard where you can view, edit, or delete any of your hosted sites with ease. The built-in editor allows for quick, on-the-fly tweaks to your HTML, CSS, and JS without needing to re-upload files from your local machine, making minor updates and bug fixes incredibly efficient.

📁 Comprehensive File & Asset Support

Build rich, interactive experiences without limitations. 900.cool supports all the essentials: HTML, CSS, and JavaScript files for structure, style, and logic. But it goes further, fully supporting images, fonts, icons, and other static assets. This means you can upload complete project folders and have everything work together seamlessly, ensuring your site looks and functions exactly as you designed it locally.

Use Cases of 900.cool

Solo Developer Portfolios

Showcase your skills and projects to the world in minutes. Developers can quickly spin up a sleek, high-performance portfolio site to display their work, link to GitHub repositories, and provide contact information. The instant deployment and custom domain support allow for a professional online presence that can evolve as quickly as your skills do, perfect for freelancers and job seekers.

Startup & Product Landing Pages

Test your MVP's messaging or launch a new feature with a dedicated, high-converting landing page. Startups use 900.cool to create and A/B test different marketing pages at lightning speed without backend complexity. The reliability and speed ensure a great user experience for potential customers, while custom domains lend immediate credibility to new brands.

Marketing Campaign Microsites

Create targeted, standalone sites for specific campaigns, product launches, or events. Marketers can bypass IT bottlenecks to deploy beautiful, focused microsites for a webinar, ebook download, or holiday promotion. The platform's simplicity allows for rapid creation and iteration, and the site can be taken down just as easily once the campaign ends.

Educational Prototypes & Demos

Students, educators, and engineers can share interactive code demos, project submissions, or tutorial examples with a simple link. Instead of sharing bulky ZIP files or complex setup instructions, you can upload your HTML/CSS/JS prototype to 900.cool and provide a live, running version that anyone can access instantly from their browser, enhancing collaboration and learning.

Frequently Asked Questions

Which file formats are supported?

900.cool supports all standard static website file formats. This includes your core web files like HTML, CSS, and JavaScript (.js). Additionally, you can upload supporting assets such as images (JPEG, PNG, GIF, SVG), web fonts (WOFF, WOFF2, TTF), and other static resources. This comprehensive support lets you host complete, fully-functional websites.

What is the file size limit?

To ensure optimal performance and speed for all users, there is a per-file size limit of 10MB. We generally recommend keeping your total project size under 100MB for the best experience. This is more than sufficient for the vast majority of static sites, including those with multiple pages, stylesheets, scripts, and optimized images.

How do I customize the access URL for my site?

Customizing your URL is simple! During the site creation process, you'll find a field labeled "Access URL (UUID)." You can enter a custom path using only letters and numbers here (e.g., "my-awesome-project"). If you leave this field blank, 900.cool will automatically generate a random, unique 6-character string for you. Your full site URL will then be based on this path.

How do I use my own custom domain?

After creating your site on 900.cool, you can upgrade to a plan that supports custom domains (hinted at on the site as a "NEW" feature). Once enabled, you'll be able to connect your own domain (e.g., www.yourbrand.com) through the project management dashboard. The platform will provide you with the necessary DNS records (like a CNAME) to point your domain to your hosted static site.