A
license-
qualityC
maintenanceEnables image processing and analysis using Google's Gemini 2.5 Flash model. Supports local files, URLs, and Base64 images with streaming responses and automatic output saving.
Last updated
2
MIT
mcp-image-previewer
by signal-slot
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@mcp-image-previewerpreview the base64 image"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
mcp-image-previewer
An MCP (Model Context Protocol) server that previews base64-encoded images in a native GUI window using Slint.
Features
Native GUI — Slint-based window, no Python or external runtime needed
Window reuse — Same window updates in-place across multiple images
Always-on-top — Optionally pin the preview window above other windows
Show/hide — Toggle window visibility without losing state
Format support — PNG, JPEG, WebP, GIF, TIFF, etc. (via sharp)
Related MCP server: Capture Win MCP
Requirements
Node.js 18+
Installation
Claude Code
claude mcp add image-previewer -- npx mcp-image-previewerManual configuration
Add to your MCP client configuration:
{
"mcpServers": {
"image-previewer": {
"command": "npx",
"args": ["mcp-image-previewer"]
}
}
}Tools
preview_image
Display a base64-encoded image in the viewer window.
Parameter | Type | Required | Description |
| string | Yes | Base64-encoded image data |
| string | Yes | MIME type (e.g. |
show_window
Show or hide the preview window.
Parameter | Type | Required | Description |
| boolean | Yes |
|
stay_on_top
Set whether the preview window stays on top of other windows (X11/Windows only).
Parameter | Type | Required | Description |
| boolean | Yes |
|
Development
npm install
npm run build
npm startLicense
MIT
This server cannot be installed
Maintenance
–Maintainers
–Response time
–Release cycle
1Releases (12mo)
Commit activity
Resources
Unclaimed servers have limited discoverability.
Looking for Admin?
If you are the server author, to access and configure the admin panel.
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