Watermark GIF
Overlay a custom logo or text watermark onto every frame of your animated GIF. Adjust position and opacity directly in your browser without uploading files.
GIF, APNG, WebP, AVIF · static images are accepted too
Tips
- Upload a PNG logo with a transparent background to prevent an opaque white box over your animation.
- Set the watermark opacity between 30% and 45% for a clear stamp that does not obstruct underlying motion.
- Restrict the watermark overlay to a specific frame range if you only want it visible during certain scenes.
How to use it
- 1 Upload the animated GIF you want to watermark.
- 2 Enter custom text or upload a PNG graphic to use as your stamp.
- 3 Adjust the overlay position, opacity, scale, and target frame range.
- 4 Generate and download your watermarked GIF animation.
What you should know
Watermarking animated GIFs protects original animations, branded promotional banners, and social clips from unauthorized reposting. Because the GIF format is constrained to an indexed palette of at most 256 colors per frame, blending text or semi-transparent graphic layers introduces unique color quantization challenges. When an alpha-blended graphic or text overlay merges with existing frames, the combined pixels must be re-mapped into a global or local color table. Choosing the right transparency levels and high-contrast placement preserves the clarity of both the underlying motion sequence and the branding badge without blowing up the final file size.
This tool decodes every animation frame locally, stamps your text or image watermark at exact coordinates, and re-encodes the sequence directly in your browser. You can customize placement across standard corners, configure opacity, and set custom frame intervals so the watermark only appears where intended. Re-encoding calculates a fresh color palette for the modified frames to reduce banding while maintaining original timing and loop counts. Note that proprietary metadata and embedded color profiles are stripped during the re-encoding pass, and complex gradient overlays may increase the final byte count due to reduced LZW compression efficiency.
Frequently asked questions
Will adding a watermark increase the GIF file size?
Yes, introducing new colors and semi-transparent gradients adds complexity to each frame's 256-color palette, which can slightly reduce LZW compression efficiency and increase total file size.
Can I use an image with transparency as a watermark?
Yes, uploading a PNG file with transparent pixels ensures the watermark blends smoothly into your GIF frames without leaving an opaque rectangular border.
Are my animation files uploaded to an external server?
No, frame extraction, watermark blending, and GIF re-encoding all execute locally in your web browser, ensuring your files never leave your device.
Guides
Articles and format references related to this tool.
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