Postii X Video Downloader
Download available MP4 videos from public X posts to your computer.
Chrome 120+ on desktop. Manual installation required.
Example X post · @postii
A little less busywork. A little more you.
MP4 · 720p · Example video
Interactive illustration · Try the controls
Keep the good clip.
- Select a public X post from the current tab.
- Find available videos and choose an MP4 quality.
- Save through Chrome’s download dialog.
Unzip. Load. Meet your Postii.
These are downloadable builds, not Chrome Web Store listings. Install only if you’re comfortable loading an unpacked extension.
- Download the ZIP on your computer and extract it to a folder you’ll keep.
- In desktop Chrome, enter
chrome://extensionsin the address bar. - Turn on Developer mode, then choose Load unpacked.
- Select the extracted postii-video folder containing
manifest.json. - Use Chrome’s extensions menu to pin Postii X Video Downloader to your toolbar.
To uninstall, choose Remove on its card at chrome://extensions. Updates are manual: download the new build and reload the extension.
Put it to work.
Open a public X post, open Postii X Video Downloader, choose the post, and click Find video. Select an available quality and Download MP4.
Experimental: X’s public embed response is not a stable API and may stop working. Private posts, protected content, stream-only videos, and DRM bypass are not supported. Live X compatibility still needs testing before release. Only download content you own or have permission to save.
Your data, explained.
The selected post ID and your request’s IP address go directly to X to retrieve public video metadata. Postii does not receive them. Downloads stay on your device.
Requested permissions: Active tab, scripting, downloads, and access to cdn.syndication.twimg.com.
Big plans start with a little Postii.
Give your ideas a workspace, too.