Add Video Watermark
Overlay a local image on a video at a selected corner with configurable scale.
Tool code processes selected files and entered content in your browser and does not submit them to a TOOLGRID processing endpoint. TOOLGRID measures tool usage, not the content you enter.
- No TOOLGRID input upload
- No account
- Review before copy
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What this tool does
Add a PNG, JPEG, or WebP overlay to a local video. Choose the corner and watermark width before re-encoding to MP4.
Choose the video and overlay image, set scale and corner, encode, then inspect contrast and safe margins.
Processing starts only after you choose files and press the action button. The media engine is not preloaded on the homepage or ordinary tool pages.
Where this tool earns its place
Place a transparent PNG at the bottom-right of a presentation recording.
What to check before relying on the result
- The image is burned into every output frame and cannot be removed losslessly later.
- Large overlays or source videos increase encoding time and browser memory use.
Open a nearby browser tool when you need to validate, convert, or reuse the result.
How to use
01Use Cases
Place a transparent PNG at the bottom-right of a presentation recording.
Choose the video and overlay image, set scale and corner, encode, then inspect contrast and safe margins.
Tips & Tricks
- 01Start with a short representative file
Confirm codec and browser support before committing device time to a long source.
- 02Keep the source
Every output is a new file. Retain the original until you have completed a full playback check.
FAQ
02Is my media uploaded to TOOLGRID?
No. The selected files are written into an in-browser worker file system. The self-hosted encoder assets are downloaded separately, but TOOLGRID does not receive the selected media for processing.
Why can a local media job be slow?
The compatibility encoder runs single-threaded in WebAssembly and is limited by device CPU, available memory, source duration, resolution, codecs, and browser behavior.
What should I verify in the result?
Check playback, duration, seeking, video and audio synchronization, expected tracks, visual quality, and actual file size in the browser or player used by your audience.