Add Watermark

Protect your images with a customizable text watermark.

Drop your image here 🍡

PNG, JPG, WebP, BMP — any size, mochi handles it all

Files never leave your device
100% Private No Signup No Watermarks
Text
Size36px
Opacity30%
Color
Logo
Format
Share this tool
Need more? Try related tools

Sharpen your image first for maximum clarity, then apply your watermark for professional protection.

Compress Image Resize Image Image Converter Crop Image Photo Editor
Browse All Tools →

How to Add a Watermark to Images Online

Add text watermarks to your images online with imagemochi's free watermark tool. Protect your photos with a tiled diagonal pattern that covers the entire image surface, making it extremely resistant to removal by cropping or cloning. Customize the text, font size, opacity, and color to match your brand. Ideal for photographers, artists, and content creators who need to share preview images while protecting their work. Completely browser-based — your images never leave your device.

1
Upload
Drop your image or click to browse
2
Customize
Set watermark text, size, opacity, and color
3
Download
Save your watermarked image

Frequently Asked Questions

How do I protect my images from theft?
Add a visible watermark with your name or copyright text at 20-40% opacity. The tool applies a tiled diagonal pattern across the entire image, making it extremely difficult to remove by cropping or cloning. For best results, resize to your target dimensions first, then apply the watermark as the final step before sharing or publishing.
Can the watermark be removed by someone else?
Tiled watermarks covering the entire image surface are very resistant to removal. Unlike single corner watermarks that can be easily cropped out, the repeating diagonal pattern overlaps key image areas throughout. While no watermark is 100% removal-proof, tiled patterns provide the strongest practical protection for photographers and artists.
How do I customize the watermark appearance?
You can adjust four properties: Text sets the watermark content such as your name or copyright symbol. Size controls font size from 12 to 120 pixels. Opacity ranges from 5% (nearly invisible) to 100% (fully opaque) — 20-30% is recommended for professional use. Color lets you pick any shade, with white or black being most common.
What image formats can I watermark?
The tool accepts all standard image formats including JPEG, PNG, WebP, and BMP. Output can be saved as PNG for lossless quality with transparency support, JPEG for smaller photo files, or WebP for optimal web compression. The watermark is rendered at full image resolution regardless of output format for crisp, clear text.
Can I watermark multiple images at once?
The tool processes one image at a time to let you preview the watermark placement before saving. For batch watermarking, process each file sequentially — your text, size, opacity, and color settings persist between uploads. This ensures consistent watermark appearance across your entire image collection or portfolio.

Related preset categories

Curated multi-step recipes that build on this tool — drop an image, get the right output for the destination platform without configuring the steps yourself.

Design assetsApply consistent watermarking to design deliverables, social-media exports, and brand-asset bundles before client handoff. Marketplace listingsNote: most marketplaces (Amazon, eBay, Walmart) reject primary listing images with watermarks — apply only to secondary / lifestyle / detail images.

Browse all categories →