Image Watermark
Add text or image watermarks to your photos — control opacity, position, font, and tiling. 100% client-side, no upload.
About this tool
Protect your images with watermarks — add custom text or logo overlays right in your browser. Control opacity, font size, color, position (nine placement options), and tiled repeat for full-image coverage. No upload, no sign-up, your photos never leave your device.
How to use it
Quick steps to get the most out of this utility.
- 1
Upload your image
Drag and drop or click to browse. Supports JPG, PNG, WebP, GIF, BMP, and AVIF up to 50 MB.
- 2
Choose watermark type
Select Text (custom text with font, color, opacity) or Image (upload a logo or icon as watermark).
- 3
Set position and style
Pick a position from the 3×3 grid or enable Tiled mode to repeat the watermark across the image.
- 4
Download
See the live preview, click Apply Watermark, then download your watermarked image instantly.
Why watermark your images? A guide to copyright protection
Anyone can right-click and save an unprotected image from the web. Watermarking is the simplest, most effective deterrent against unauthorized use — it visibly marks your work as yours without destroying its visual appeal. A well-placed watermark doesn't just protect; it promotes. Every time your watermarked image gets shared, your name, brand, or website travels with it, turning viewers into potential clients.
Photographers, designers, and e-commerce sellers face a common problem: their images get scraped, reposted, and reused without credit. A watermark containing "© 2026 Your Name" or a small logo in the corner tells viewers who owns the work — and where to find more. Even if the image is screenshotted, the watermark stays. The tiled mode takes this further: instead of one corner mark, dozens of overlapping watermarks cover the image end-to-end, making cropping or masking impractical.
Consider a product photographer shooting 50 listings for an online store. Without watermarks, a competitor can copy the catalog in minutes. With a semi-transparent logo applied across all images at 25% opacity using the tiled mode, each product photo becomes branded content — beautiful to look at but impossible to steal cleanly. The watermark is visible enough to claim ownership yet subtle enough not to distract from the product itself.
Text vs. image watermarks — which should you use?
Text watermarks are quick, zero-file-size-overhead, and perfect for simple copyright lines, "DRAFT" stamps, or "CONFIDENTIAL" overlays. You type a phrase, pick a font size (8–72 px), choose a color, slide the opacity to taste, and position it anywhere on the image — top-left corner for subtle branding or center-screen at 50% opacity for a review proof. Image watermarks use an actual graphic file (like your logo PNG) and give you scale control — set it to 40% of original size for a discreet brand mark or 80% for a prominent overlay. Transparent PNGs work best because the background blends naturally.
Why no-upload matters for watermarking
The images you watermark are often your most valuable digital assets — original photos, design drafts, unreleased product shots, or client deliverables under NDA. Uploading them to a third-party watermarking service is like handing your negatives to a stranger. You have no control over whether the server retains a copy, logs metadata, or trains an AI model on your compositions. This tool processes everything inside your browser tab. Your image pixels never cross a network boundary. The Canvas API handles compositing locally, and the final watermarked file streams straight to your hard drive — no intermediary, no exposure, no risk.
| Feature | This tool | Upload-based tools |
|---|---|---|
| Privacy | 100% client-side | Images sent to a server |
| Watermark types | Text + image (logo) | Often text-only |
| Tiled mode | Full-image repeat pattern | Rarely available |
| Original file exposure | Never leaves your device | Stored on external servers |
Frequently asked questions
Is my image uploaded to a server?+
No. The entire watermarking runs in your browser using JavaScript Canvas API. Your image never leaves your device, never touches our servers, and is never logged or stored anywhere.
What image formats are supported?+
JPG, PNG, WebP, GIF, BMP, and AVIF. The tool auto-detects the format — just drop any image file. The watermarked output preserves your original format.
What is the maximum file size?+
You can watermark images up to 50 MB. Files over 25 MB will show a warning since processing may be slower on mobile devices due to per-tab memory constraints.
Will this work on mobile?+
Yes, on modern mobile browsers (Chrome, Safari, Firefox). Very large images (>25 MB) may be slower on phones due to per-tab memory constraints. For best results, resize your image first.
What kind of watermark can I add?+
You can add text watermarks (custom text, font size, color, opacity) or image watermarks (logo, signature, icon — PNG with transparency recommended). Both support nine position options and a tiled repeat mode for full-image coverage.
Can I use a transparent PNG as my watermark image?+
Yes. PNG files with transparency work best as image watermarks — the alpha channel is preserved, so your logo or icon looks clean and professional over any background. Set opacity to blend it further.
What does the Tiled mode do?+
Tiled mode repeats the watermark across the entire image at regular intervals, creating a pattern that covers every part of the photo. This is the strongest protection against cropping — even if someone crops the image, the watermark is still visible somewhere on the remaining area.
Does this tool support batch watermarking?+
Currently, you process one image at a time. The tool is optimized for quick, single-image workflows — perfect for photographers, designers, and content creators who watermark images individually before publishing.
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