在线免费添加水印
为您的照片添加文字或图片水印。
Frequently Asked Questions
Is the 添加水印 free to use?
Yes, the 添加水印 on Allio Tools is completely free with no sign-up or registration required. It works directly in your browser.
How does the 添加水印 work?
为您的照片添加文字或图片水印。 No data is sent to a server — everything runs locally in your browser for maximum privacy and speed.
Do I need to install anything to use the 添加水印?
No installation needed. The 添加水印 runs entirely in your web browser on any device — desktop, tablet, or mobile.
Is my data safe when using the 添加水印?
Completely safe. The 添加水印 processes everything locally in your browser. No input data, results, or usage information is ever transmitted to or stored on any server.
Does the 添加水印 work offline?
After the page loads for the first time, the 添加水印 works without an internet connection for all client-side processing. Tools that fetch live external data (such as DNS or network lookups) require an active connection.
What image formats does the 添加水印 support?
The 添加水印 works with common image formats supported by your browser, including JPEG, PNG, WebP, and GIF. SVG support varies by tool. No format conversion plugin or driver is needed.
Does the 添加水印 work with large image files?
Yes. The 添加水印 processes files entirely in your browser using the Canvas API. Very large files (over 20 MB) may take a few extra seconds on older or lower-powered devices. Closing other tabs can free up memory for better performance.
Does the 添加水印 work on all browsers?
Yes. The 添加水印 is built with standard browser APIs and works on all modern browsers including Chrome, Firefox, Safari, and Edge — on both desktop and mobile. No plugins, extensions, or third-party software are required.
How do I save or export my results from the 添加水印?
Select and copy the result text to paste into any document or app. For image tools, a Download button saves the file directly to your device. Your browser's built-in screenshot function also captures results quickly. No account or login is required.