Add Watermark to Video Online Free - Text Watermark Tool
243 usesDrop a video file here or click to browse
Supports MP4, WebM, AVI, MOV and more
Watermark Tips
Text Watermark
Add custom text as a watermark with adjustable font size and shadow effect
Flexible Position
Place your watermark in any corner or center of the video
Opacity Control
Adjust opacity from 10% to 100% to balance visibility and aesthetics
Content Protection
Protect your videos from unauthorized use with visible branding
Frequently Asked Questions
Does adding a text watermark online reduce my video's quality or file size?
Our free online video watermark tool processes your video directly in your browser. This client-side processing aims to preserve your original video quality as much as possible, as it avoids re-encoding when applying the text watermark. The output video will retain its original resolution and generally a similar file size, ensuring your content protection doesn't come at the cost of visual fidelity or larger downloads.
How do I control where the watermark appears on my video?
You can precisely position your text watermark using our intuitive drag-and-drop interface. Simply click and drag the watermark box to your desired spot on the video preview. We offer 9 predefined positions, including corners and the center, or you can place it anywhere in between.
Why does my watermarked video look different from the preview?
The preview shows the watermark overlaid on a single frame, but the final video applies it to every frame. Sometimes this can cause slight shifts in how the text blends with motion. For best results, set opacity between 70-80% and avoid placing the watermark near fast-moving content at the edges.
Is there a limit on how long my video can be?
No hard limit exists for video length. The tool processes everything client-side, so your browser's memory is the real constraint. A 10-minute 1080p video runs fine on most modern machines. For 4K footage longer than 5 minutes, you might notice slower performance. Stick to under 30 minutes for smooth results.
Do I need to install anything to use this tool?
Zero installation, no account, and nothing to download. Everything runs inside your browser using standard web technologies. Just open the page, pick your video file from your computer, and start watermarking in seconds. The tool works on Chrome, Firefox, Edge, and Safari. Even older laptops handle it fine. One gotcha: if your browser blocks local file access, check your privacy settings first.
What happens if my video has multiple scenes with dark and bright backgrounds?
The white text with a subtle shadow handles contrast well across most backgrounds. But you might lose readability on pure white or very bright scenes. Our opacity slider goes from 10% to 100% — for mixed lighting videos, set it around 60-65%. That strikes a balance between visibility and not overwhelming bright sections. Test a short clip first before processing the whole video. One trick: place the watermark in the bottom-right corner since most online viewing players dim that area slightly.
What happens to my video after I process it with the watermark?
Nothing stays on our servers. Since the tool runs entirely in your browser, your original file never gets uploaded anywhere. The watermarked video gets rendered locally, then your browser triggers a download automatically. Once you close the tab, every trace of processing data disappears. Your source file stays untouched on your computer. Smart move: rename the output file right after downloading so you don't confuse it with the unmarked version later.
What if my file is too big for my browser to handle?
Your browser gives up when memory runs out, not file size. A 2GB 4K video will crash an 8GB laptop, but a 500MB 1080p clip works fine. Split long videos into 5-minute chunks using free tools like HandBrake before watermarking. For TikTok creators, trim your raw footage to under 60 seconds first — this tool handles those perfectly.
Does the watermark tool support MP4, AVI, or MOV files?
It works with any format your browser can play natively MP4, WebM, and MOV are solid bets. AVI and MKV might fail on some browsers since they lack built-in codec support. Sticking to H.264-encoded MP4 files gives you the most reliable results across Chrome, Firefox, and Safari. That's also the standard format for remote workers recording presentations and demos. Pro tip: convert odd formats to MP4 using HandBrake before importing them here.
Can I use this tool to watermark videos for my employer without licensing issues?
Yes, commercial use is completely free. You won't pay a cent or sign up for an account, even if you're watermarking client deliverables or internal training videos. Since everything stays in your browser, no third party ever stores or sees your company's footage. The output file carries no embedded tool metadata or hidden tags, so your clients won't know which tool you used. One caveat: your employer's IT policy might restrict local browser file access, so test it on your work laptop before committing to a deadline.
How to Add a Watermark
- Upload your video file
- Enter your watermark text
- Choose the position (corner or center)
- Adjust opacity with the slider
- Click Add Watermark and download the result