DMARC Report Reader
A browser tool that turns raw DMARC aggregate (RUA) XML reports into a readable summary of who is sending mail as your domain.
When setting up DMARC for a domain, mailbox providers start sending you aggregate reports, XML files listing every source that sent mail claiming to be you, and whether each one passed DKIM and SPF alignment. They are genuinely useful.
This is a small tool, styled as “The Alignment Register”, that helps understand the DMARC report. Drop a report’s XML onto the page and it parses the metadata, the published policy, and every source’s DKIM and SPF results into a plain, skimmable table, so you can tell your legitimate senders from the spoofers at a glance.
Everything runs locally. The XML is parsed in the browser with DOMParser, so no report data is ever uploaded, and there is no backend at all. It is a single, self contained HTML file with vanilla JavaScript and no framework dependencies, served as a tiny static site.