Image Protection
| 开发者 | twkmedia |
|---|---|
| 更新时间 | 2026年8月3日 20:23 |
| PHP版本: | 7.4 及以上 |
| WordPress版本: | 7.0 |
| 版权: | GPLv2 or later |
| 版权网址: | 版权信息 |
详情介绍:
- Prevents right-click saving of images
- Layout-independent screenshot shortcut detection (Windows PrintScreen and Win+Shift+S, macOS Cmd+Shift+3/4/5, Linux PrintScreen) using key codes rather than key labels
- Blurs protected media when the browser window loses focus or the tab is hidden (catches Snipping Tool, screenshot overlays, app switching)
- Three selectable protection levels: Relaxed, Balanced, Strict (Settings > Image Protection)
- Optional PrintScreen clipboard neutralization (Settings > Image Protection)
- Optional screen-recording blur via the browser Screen Capture API (Settings > Image Protection)
- Optional print/Save-as-PDF protection (Settings > Image Protection)
- Disables drag-and-drop of images
- Prevents browser-based image copying
- Optional video blur protection (Settings > Image Protection)
- Optional site-wide right-click disable (Settings > Image Protection)
- Optional EXIF privacy cleanup on upload (Settings > Image Protection)
- Media library EXIF privacy scan and batch cleanup (Media > EXIF Privacy)
- Compatible with all major browsers
- Desktop (Windows, macOS, Linux): best results. Detects most screenshot shortcuts, blurs on window focus loss (used by Snipping Tool and screenshot overlays), can neutralize the PrintScreen clipboard, can blur during in-browser screen recording, and can blank media in print output.
- Mobile (Android, iPhone): only deterrents apply (no long-press save, no drag, no copy). Web pages cannot detect or block hardware-button screenshots or screen recording on phones.
- Any device: a photo of the screen taken with another device cannot be prevented by any web-based tool.
- WordPress 5.0 or higher
- PHP 7.4 or higher
- JavaScript enabled in the browser
- EXIF privacy features require the PHP EXIF extension; selective cleanup works best with the ImageMagick (
imagick) PHP extension
安装:
- Install the plugin either via the WordPress.org plugin repository, or by uploading the files to your server:
- Method 1: Search for 'Image Protection' in WordPress > Plugins > Add New
- Method 2: Upload the plugin files to the
/wp-content/plugins/image-protectiondirectory - Activate the plugin through the 'Plugins' screen in WordPress
常见问题:
How does the Image Protection plugin work?
The plugin uses JavaScript to implement various techniques that prevent users from copying, saving, or taking screenshots of images on your site.
Will this plugin affect my website's performance?
The plugin is designed to be lightweight and should not significantly impact your website's performance. EXIF scanning only runs when you start it from Media > EXIF Privacy.
What do the protection levels do?
Go to Settings > Image Protection and choose a level:
- Relaxed: reacts only to confirmed screenshot shortcuts and to tab switching. Lowest chance of false positives.
- Balanced (recommended): adds pre-emptive shielding while screenshot modifier keys are held and blurs whenever the browser window loses focus (which happens when most screenshot tools open).
- Strict: the most aggressive heuristics, including blurring when focus is lost right after a modifier press and periodically clearing the clipboard. This catches the most attempts but can occasionally blur content during normal use.
What does "Neutralize PrintScreen clipboard" do?
On Windows and Linux, pressing PrintScreen copies the screen to the clipboard. When this option is enabled, the plugin overwrites the clipboard right after a PrintScreen press so the captured frame cannot be pasted. It is best-effort: it requires clipboard permissions and is not supported in every browser. With the Strict level, the clipboard is also cleared periodically while the tab is focused.
Can the plugin stop screen recording?
It can blur protected media during in-browser screen capture (the Screen Capture API used by browser tabs) when you enable "Block screen recording" in Settings. It cannot stop native operating-system or third-party screen recorders.
Can the plugin stop screenshots on phones?
No. Mobile browsers do not expose any way to detect or block hardware-button screenshots or screen recording. On phones the plugin still applies deterrents: it blocks long-press "Save image", dragging, and copying.
Is this plugin compatible with all themes?
Yes, the Image Protection plugin is compatible with most WordPress themes. However, some themes may have custom scripts that could interfere.
What server requirements do the EXIF privacy features need?
Scanning for location and other privacy-sensitive image metadata requires the PHP EXIF extension (exif_read_data). Removing that metadata on upload or via the EXIF Privacy tool also requires a PHP image library: ImageMagick (imagick) is recommended for selective privacy cleanup; GD can be used as a fallback but may remove all embedded metadata from JPEG files. These features are optional and disabled by default — the rest of the plugin works without them.
Can I disable the protection for specific images?
Yes, you can disable protection for specific images in two ways:
- Add the class
no-image-protectionto the image (or a parent wrapper such as<picture>):
html
<img src="image.jpg" class="no-image-protection">
2. Add the data attribute data-image-protection="false" to the image or a parent wrapper:
html
<img src="image.jpg" data-image-protection="false">
Can I force protection on specific images or elements (like canvas)?
Yes, you can force protection on specific images or elements in two ways:
- Add the class
force-image-protectionto the image:
html
<img src="image.jpg" class="force-image-protection">
2. Add the data attribute data-image-protection="true":
html
<img src="image.jpg" data-image-protection="true">
This will ensure the image or element is protected even if it would normally be excluded (like SVG images).
Can I protect videos?
Yes. Go to Settings > Image Protection and enable "Apply blur protection to video elements". This option is disabled by default so existing sites are unaffected after updating. You can also opt individual videos in or out using the same no-image-protection, force-image-protection, and data-image-protection attributes used for images.
How do I remove GPS or location data from images?
Go to Settings > Image Protection to enable automatic privacy metadata removal on upload, or use Media > EXIF Privacy to scan your existing library and clean flagged images in batches. Test on a staging site first.
How can I uninstall the plugin?
To uninstall, go to the Plugins page in your WordPress admin, find the Image Protection plugin, and click "Deactivate." You can then delete it if desired.