DevNestio Adds 5 Free Browser-Based Tools for GraphQL, Docker, and Email Analysis

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A developer has released five new browser-based utilities on DevNestio, a platform that now hosts 172 free developer tools. The new additions include a GraphQL formatter, a Protobuf validator, a Docker Compose validator, a Dockerfile analyzer, and an email header analyzer. All tools require no sign-up, no file uploads, and function entirely offline using vanilla JavaScript in single HTML files. Each tool is designed for quick, in-browser checks — such as catching Dockerfile security issues, validating docker-compose configurations, or triaging suspicious emails via SPF, DKIM, and DMARC analysis. The project uses no external parsing libraries and includes over 80 Node.js assert tests to verify core logic independently of the browser.

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Insufficient source content to generate a reliable summary

The provided article text contains no substantive information beyond a GitHub repository link and brief description. No verifiable facts about OLAP, OLTP, or DuckDB were present in the supplied content. A meaningful and accurate summary cannot be written without fabricating details. Please provide the full article text for proper summarisation.

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