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100% 保护隐私 • 零服务器文件上传

为什么使用 Utiliome 免费的 Add Watermark / Logo Overlay?

专为严格隐私保护、即时执行和零门槛体验而构建。无需订阅、无付费墙、无需注册账号。

100% Local Privacy

Your videos and images are processed directly in your browser using FFmpeg WebAssembly. Your files never touch external servers.

Universal Support

Seamlessly apply watermarks to both video files (MP4, WebM) and static images (PNG, JPG) in one unified tool.

Full Customization

Easily drag sliders to adjust your logo's position, scale, margin, and transparency (opacity) for the perfect overlay.

No Size Limits

Because everything happens locally, there are no artificial file size limits or paywalls for large high-res videos.

Utiliome 与传统云端工具对比

对比我们本地优先的 WebAssembly 引擎与传统云端转换工具。

特性 Utiliome (本地浏览器) 传统云端转换器
Data Privacy 100% Offline (Zero Uploads) Media uploaded to remote servers
File Size Limits Unlimited Local Processing Strict limits (e.g. max 50MB)
Media Types Both Video and Image Support Separate tools required
Cost 100% Free Forever Premium subscription required

只需 3 步轻松使用 Add Watermark / Logo Overlay

无需安装任何软件。一切均在您的网页浏览器中直接运行。

1

Upload Main Media

Drop your video or image into the secure local dropzone. It loads instantly into your browser's memory.

2

Add Your Logo

Upload a PNG logo and adjust its position, scale, margin, and opacity using the real-time preview.

3

Apply and Download

Click apply. Our local engine composites the watermark and instantly provides a secure download link.

Why You Must Watermark Your Media

快速解答: Watermarking your original videos and photos is the best defense against intellectual property theft and unauthorized resharing.

In the age of viral social media, original content is frequently downloaded and reposted without attribution. By embedding your brand's logo or a custom watermark directly into your video frames or image pixels, you ensure that your authorship remains attached to the media no matter where it spreads across the internet.

Absolute Privacy via WebAssembly

快速解答: Most online watermarking tools require you to upload your videos to their servers. We use WebAssembly (FFmpeg) to process your media entirely on your own device.

If you are working with unreleased campaign videos, private family photos, or corporate assets, uploading them to a 'free' cloud service exposes you to significant privacy risks. Utiliome solves this by executing the complex video compositing algorithms directly inside your web browser. Your data remains strictly local and completely secure.

Add Watermark / Logo Overlay 常见问题解答与技术指南

了解使用 Utiliome 免费在线 add watermark to video online free 的一切须知。

Are my videos uploaded to a cloud server?

Never. All processing happens locally in your browser memory via FFmpeg WebAssembly. Your media stays on your device.

Can I adjust how transparent the watermark is?

Yes, you can easily control the opacity of your logo so it doesn't obstruct the main content of your video or image.

Is there a limit on the video file size?

Because the processing happens locally on your machine, we do not enforce arbitrary server-based file size limits.

Is this tool completely free?

Yes, it is 100% free with no hidden paywalls, subscriptions, or watermarks of our own.