Postar Content Sync Assistant - Quick Start
🌐 Browser Support
⬇️ Offline Installation
Here is the complete installation guide for the Postar Chrome browser extension in .zip format:
Tip
For other browsers, please refer to the Chrome browser installation guide.
🧩 Download Extension
🔌 Postar Content Sync Assistant Chrome Extension Download [Stable]
🔧 Prerequisites
Get the extension file
- Download the
.zipextension package from the Postar official website - If you have a
.crxfile, rename it to.zipfirst and then extract it
- Download the
Extract the file
- Right-click the
.zipfile → Extract to a standalone folder (use an all-English path, e.g.,D:\Postar) - Make sure the extracted folder contains all the files (JS, HTML, and other resources)
- Right-click the
📥 Installation Steps
Open the Extensions page
- Type
chrome://extensions/in the Chrome address bar and press Enter
- Type
Enable Developer Mode
- Find the Developer mode toggle in the top right corner → Enable it (turns blue)
Load the extension folder
markdown
Click **Load unpacked** → Select the extracted folder → Click "Select Folder"Reference for operation
- Enable the extension
- Find the newly installed
Postar Content Sync Assistantextension in the extensions list - If not automatically enabled, manually toggle the extension switch
- Click the 🧩 icon in the browser toolbar to pin the extension
- Find the newly installed
⚠️ Troubleshooting
| Issue | Solution |
|---|---|
| "Invalid package" error | Update Chrome to the latest version (v124+ required) |
| Cannot drag and drop to install | Use "Load unpacked" to manually select the folder |
| Extension icon not showing | Check if the extension is enabled on the extensions page + pin it to the toolbar |
| Features not working | Disable and re-enable the extension / restart the browser |
💡 Advanced Tips
- Extension Maintenance
Offline extensions do not auto-update; you need to manually download new versions periodically - Security Advice
Only download extensions from the official store, the open-source project website, or trusted mirror sites
Note: Extensions installed in developer mode may show a "Disable" prompt after restarting the browser. This is a normal security mechanism and does not affect usage.