How to Watermark Multiple Images Online
This tool lets you add text watermarks to many images at once. You control the text, size, opacity, rotation, position, and color. The preview shows exactly how the watermark will look before you apply it to the whole batch.
Upload your images, adjust the settings, preview the result, then click Watermark and Download to get all images with the watermark applied. Everything happens in your browser — your original files are never changed or uploaded.
Watermark Positions and Protection
Tile mode repeats the watermark diagonally across the entire image. This is the strongest protection because it is very hard to crop out or remove without damaging the photo.
Corner positions (Bottom Right, Bottom Left, Top Right, Top Left) are less intrusive and good for branding.
Center position makes the watermark very visible. Use rotation (-30° to +30°) for a more professional diagonal look.
Recommended Settings
• For strong protection: Tile mode at 40-60% opacity
• For subtle branding: Corner position at 20-30% opacity
• Font size: 24-48 px depending on image width
• Quality: The tool uses 92% JPEG quality — the visual difference is minimal
Frequently Asked Questions
Six positions: Center, Tile (repeating diagonal pattern), Bottom Right, Bottom Left, Top Right, and Top Left. Tile mode provides the strongest protection because the watermark covers the entire image surface.
The watermark is drawn as a text overlay. The original image pixels are not altered. Output is saved as JPEG at 92% quality, which introduces minimal visible change.
Currently only text watermarks are supported. Logo/image watermark support is planned for a future update.
No. All processing happens in your browser using the Canvas API. No images are uploaded or transmitted.
25-40% for visible but non-intrusive protection. 50-60% with tile mode for maximum protection. Use the preview to test different levels.