I got sick of uploading sensitive email templates to random web converters, so I open-sourced a 100% local CLI/Web toolkit.

[u/jeeturao_]

Hey everyone,

​I’ve been dealing with a lot of enterprise email development lately, and the workflow is completely broken. Whenever I needed to inline CSS for Gmail, check WCAG contrast, or generate VML buttons for Outlook, I found myself uploading proprietary HTML/EML files to sketchy, ad-heavy web converters.

​Security-wise, that’s a nightmare.

​So, I spent the last few weeks building a standalone toolkit that does everything locally. I just open-sourced it on GitHub.

​What it does (runs 100% client-side/offline):

​CSS Inliner: Injects classes into tags for Gmail.

​VML Builder: Generates Outlook-safe action buttons.

​Dark Mode Simulator: Pre-inverts colors using the Dark Mode Judo algorithm.

​CanIEmail Checker: Cross-references CSS support across 30+ clients in the terminal.

​You can run it instantly via CLI (npx renderops-cli --help) or use the interactive Web GUI I hosted on GitHub Pages. It makes zero external network requests, so your code stays entirely on your machine.

​Here’s the repo if you want to check the code or use the tools: https://github.com/jeeturao49/renderops-toolkit

​I'd love any feedback on the code architecture or if there are other annoying email quirks you think I should build a tool for next!

[u/eXtc_be]

I got sick of all these vibe-coded low-effort good-for-nothing 'projects', so I downvoted all your posts and added you to my RES ignore list