Turn raw tweets into beautiful cards in one click.
A lightweight, privacy-focused browser extension that generates high-contrast, typographically rich images of X posts. Direct, locally-rendered, and stunning.
Designed for Visual Excellence
PostCardX is packed with features to make tweet sharing premium and seamless.
1:1 Native Integration
PostCardX injects directly into the X.com share menu, perfectly matching native UI themes (White, Dim, and Lights Out). No popups, no separate websites, no disruption to your reading flow.
100% Secure & Local
Everything runs entirely in your browser sandbox. Images are converted using HTML5 canvas without calling third-party APIs. Your data never leaves X.com.
Premium Style Presets
Toggle between Zen borderless style, Card border styles, or code CLI styling to personalize how your tweets represent your thoughts.
High Contrast & Tabular Layouts
Fully compliant with WCAG 2.1 accessibility standards (4.5+:1 primary contrast levels). Leverages advanced layout metrics like tabular-nums to prevent visual shifts when card metrics update.
Frequently Asked Questions
Yes! PostCardX is completely free to use. We do not charge fees, show advertisements, or sell telemetry data. Our goal is to provide a clean, secure, and privacy-focused utility for everyone.
PostCardX intercepts elements directly inside the active document and renders card snapshots using fully isolated Canvas contexts. There are no backend database servers, no analytics tracers, and no external storage. Everything happens 100% locally on your machine.
Absolutely. The extension computes device pixel ratios (DPR) during render execution to guarantee exported PNG output is optimized for high-DPI Retina or 4K displays without blurring text.
