jarvisbox

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DevOps tools

10 browser-based tools for infrastructure and deployment workflows — lint, format, validate, and build config files without uploading anything. No signup, no cloud, nothing leaves your device.

100% client-side · no uploads · no telemetry

DevOps tools

Why browser-only DevOps tools?

Infrastructure configuration files often contain sensitive data: environment variable values, SSL private key paths, server hostnames, and authentication credentials. Uploading these to an online linter or formatter means trusting a third party with production secrets. The tools on this page run entirely in your browser — paste freely, audit thoroughly, and share nothing.

These tools are designed for the moments between commits: quickly checking a Dockerfile before pushing an image, formatting an NGINX config block before a deploy, or building a DNS record string before updating your zone file. Fast, private, and always available.

Choosing the right tool

For container workflows: start with the Dockerfile Linter to catch mistakes before building. For web server work: use the NGINX Formatter or .htaccess Builder. For CI/CD: validate your pipelines with the GitHub Actions Linter. For security: decode SSL certificates or generate SSH keygen commands. For DNS: use the DNS Record Builder. For project setup: generate .gitignore files and format .env files.

常見問題

Do my config files get uploaded to a server?
No. Every DevOps tool on this page runs entirely in your browser using JavaScript. Your Dockerfiles, NGINX configs, SSH keys, and certificates never leave your device — not even temporarily.
Can I use these tools with sensitive production config?
Yes. Because all processing happens locally in your browser, it is safe to paste production configuration files, SSH key comments, SSL certificates, and .env files without risking exposure to third parties.
Does the Dockerfile linter cover all best practices?
The Dockerfile linter checks for the most impactful best practices: correct instruction order, combined RUN statements, avoiding the latest tag, using COPY over ADD, setting a non-root USER, and more. For a comprehensive audit, pair it with Hadolint in CI.
Can the SSL cert decoder handle certificates from any CA?
Yes. The decoder parses the PEM-encoded DER binary directly in your browser. It works with certificates from any Certificate Authority — Let's Encrypt, DigiCert, Comodo, self-signed, or any other CA.
What DNS record types does the DNS Record Builder support?
The builder supports A, AAAA, CNAME, MX, TXT, NS, CAA, and SRV records. It outputs the zone file format and the matching dig command for verification.
Which .gitignore templates are included?
Templates cover the most common stacks: Node.js, Python, Java, Go, Rust, PHP, Ruby, .NET/C#, Xcode/iOS, Android, React, Docker, Terraform, and a generic OS template for macOS and Windows system files.
Do these tools work offline?
Yes. All computation runs locally once the page has loaded. The tools continue to work with no network connection after the initial page load.
Which SSH key type should I generate?
Ed25519 is the modern default — it is fast, small, and secure. Use RSA 4096 when connecting to older servers that do not support Ed25519. Avoid RSA 1024 and DSA entirely as both are considered weak.
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