About Lunaris CDN
A free, community-funded content delivery network built by developers, for developers. No paywalls, no egress fees, no strings attached.
What is Lunaris CDN?
Lunaris CDN is a free, donation-funded file hosting and content delivery platform built specifically for developers. It gives you a clean, permanent CDN URL for every file you upload — whether that's a Windows installer, a Linux package, a compiled binary, or a documentation archive.
Every file is delivered through Cloudflare's global network of 300+ edge locations, putting your content milliseconds away from your users regardless of where they are in the world. Files are stored on Cloudflare R2 object storage with built-in redundancy, and every upload is automatically checksummed with SHA256 so your users can verify what they download.
Unlike commercial CDNs that charge for egress or lock you into expensive tiers, Lunaris CDN is sustained entirely through community donations. There are no vendor lock-in traps, no surprise bills, and no data harvesting. If you find the Service useful, consider supporting its development.
Features
File Hosting
Upload files up to 5GB each with 100GB of default total storage. Chunked multipart uploads ensure reliability even for large binaries. Drag-and-drop via the dashboard or automate with the API.
Versioned Releases
Tag files with semantic version strings. Point users to a specific version with ?v=2.1.0 or always serve
the latest. Immutable cache headers ensure versioned URLs never serve stale content.
API Access
Generate scoped API keys from the dashboard and automate uploads from GitHub Actions, GitLab CI, or any CI/CD pipeline. RESTful endpoints with Bearer authentication make integration simple.
Custom CDN URLs
Every file gets a clean, shareable URL under cdn.lunaris.win/you/project/file.
Drop it in your README, docs, or release notes and it just works — forever.
Frequently Asked Questions
How is Lunaris CDN free?
Lunaris CDN is funded entirely by voluntary donations from the developer community. The infrastructure is built on Cloudflare's generous free and paid tiers combined with R2's cost-effective storage pricing. The goal is to keep the service permanently free for individual developers and small open-source projects. If Lunaris CDN saves you money or time, consider supporting its operation — even a small donation helps keep the lights on and storage costs covered.
What are the storage limits?
Each account starts with 100GB of total storage and a maximum individual file size of 5GB. There are no limits on the number of downloads or bandwidth consumed — you will never receive an egress bill. If you're running a larger open-source project and need more than 100GB, you can request a storage increase by getting in touch. Requests are reviewed on a case-by-case basis and granted based on available capacity.
How fast is it?
Files are served through Cloudflare's global edge network, which spans over 300 locations worldwide. Once a file is cached at an edge node, Time to First Byte (TTFB) is typically under 50ms for users near an edge location. Versioned files are cached with immutable headers, meaning repeat downloads skip the origin entirely. The speed you get is effectively the same as what enterprises pay Cloudflare millions for — you're just sharing it with the community.
Is my data safe?
Files are stored on Cloudflare R2, which provides automatic redundancy and durability designed for production workloads. Every file is automatically checksummed with SHA256 at upload time, so you and your users can verify download integrity. While we take storage seriously, note that as a free service there is no formal SLA or uptime guarantee — we recommend maintaining your own backup copy of critical files. All uploaded files are publicly accessible to anyone with the URL, so do not upload private or sensitive content.
Who can use Lunaris CDN?
Lunaris CDN is designed for individual developers, small teams, and open-source projects that need a reliable way to distribute software files. It is particularly suited for hosting installers, compiled binaries, packages, documentation bundles, and other developer-facing assets. Use is governed by our Terms of Service — the short version is: keep it legal, keep it developer-focused, and don't abuse the shared infrastructure.
Can I use the API in CI/CD?
Yes. Generate an API key from your dashboard and use it to upload files directly from any CI/CD system —
GitHub Actions, GitLab CI, CircleCI, Jenkins, or a simple curl command in a shell script.
The API uses standard Bearer token authentication and multipart form uploads. Scoped keys let you grant
upload-only access without exposing your full account credentials.
Built on trusted infrastructure
Lunaris CDN is built entirely on Cloudflare's platform, chosen for its reliability, global reach, and developer-friendly pricing model.
Ready to start hosting?