ALTools
Add Video Watermark
Add text or image watermarks to your video at a position you choose. Processed locally on your device.
How to use this tool — step-by-step guideHow Adding Video Watermarks Works
Upload a video and place an image (PNG or JPG) or custom text watermark on the preview. ALTools composites the overlay on your device—no server upload and no sign-up required.
Drag to position the watermark, set opacity and size, and choose font or image settings for text and logos. Optional timeline segments limit the watermark to specific portions of the video.
Protect brand assets, credit creators, label drafts for review, or add a consistent mark before sharing on social platforms.
Local processing keeps unreleased or client footage private. Adjust placement and opacity on the preview until the overlay looks right.
Export an MP4 with the watermark baked in—ready to publish, send for approval, or archive.
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Frequently Asked Questions
Text or image watermark?
Both are supported. Text is rendered on your device; PNG with transparency works best for logos.
Can I control placement and timing?
Position and size the overlay box on the preview. Use timeline segments to show the watermark only on selected ranges. Adjust opacity for text or images.
Is my video uploaded?
No. Watermarking runs entirely in your browser.