Image Watermark

Add text or image watermarks to your photos with customizable position, opacity, tiling, and rotation. All processing happens in your browser — your files never leave your device.

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PNG JPG WEBP
Watermark Settings
48px
50%
20px
0°

Preview

How It Works

How to Add Watermarks to Images Online

Protect your photos in three straightforward steps — no software installation needed.

1

Upload Your Image

Drag and drop a PNG, JPG, or WEBP file onto the upload area, or click the "Choose Image" button to select a file from your device. The image loads instantly in your browser and never gets sent to any external server, so your photos stay completely private from the moment you open them.

2

Configure Your Watermark

Choose between a text watermark or an image watermark. For text, type your desired text and customize the font, size, and color. For image watermarks, upload a logo or stamp file. Then fine-tune the placement using the 9-point position grid, adjust opacity to control visibility, set margins for edge spacing, and optionally enable tiling to repeat the watermark across the entire image with configurable spacing and rotation angle.

3

Download Your Result

The live preview updates in real time as you adjust settings, so you can see exactly how the watermark will look before committing. When you are satisfied, click "Apply & Download" to save the watermarked image to your device in its original format. There are no watermarks added by us, no branding, and no quality restrictions.

Why ConvertKr

Why Use ConvertKr Image Watermark Tool

A powerful, private, and completely free alternative to desktop watermarking software.

Free with No Branding

Every feature of the watermark tool is available at no cost. Your output images are clean and unbranded — we never stamp our own watermarks, logos, or "trial" labels onto your work. Use it as often as you need without hitting any usage cap or being prompted to upgrade.

Text & Image Watermarks

Choose between typing custom text with full control over font, size, and color, or uploading your own logo or stamp image. The image watermark supports adjustable scale so you can make your logo as subtle or prominent as you need. Switch between text and image mode instantly without losing your other settings.

9-Point Position Grid

Place your watermark exactly where you want it using a visual 3x3 position grid. Choose from nine anchor points — top-left, top-center, top-right, middle-left, center, middle-right, bottom-left, bottom-center, or bottom-right — and fine-tune the offset with the margin slider for pixel-perfect placement every time.

Tiling & Rotation

Enable tiling to repeat your watermark in a grid pattern across the entire image, making it much harder for anyone to crop or remove. Combine tiling with the rotation slider to create a professional diagonal watermark pattern commonly used by stock photography sites and creative agencies.

Privacy First

Your images never leave your device. All watermarking happens directly in your browser using the HTML5 Canvas API. There is no upload step, no cloud storage, and no third-party access. When you close the tab, every trace of your work is gone. This makes ConvertKr ideal for sensitive or confidential images.

Works Everywhere

The tool runs on any device with a modern browser. Use it on your desktop, laptop, tablet, or smartphone — Chrome, Firefox, Safari, and Edge are all fully supported. There is nothing to download or install, and it works equally well on Windows, macOS, Linux, iOS, and Android.

Learn

Complete Guide to Image Watermarking

Practical knowledge to help you protect your images effectively.

Why Watermark Your Images

Watermarking serves two primary purposes: copyright protection and brand promotion. When you share photos online — whether on social media, a portfolio website, a blog, or a marketplace — there is always a risk that someone will download and use your work without permission. A visible watermark acts as a deterrent, making unauthorized use less appealing because the image clearly identifies its owner. At the same time, watermarks can serve as subtle branding. Photographers, designers, and businesses often include their logo or name as a semi-transparent overlay so that every shared image doubles as a marketing asset. The key is to strike the right balance: prominent enough to discourage theft, subtle enough not to ruin the viewing experience.

Text Watermarks vs. Image Watermarks

Text watermarks are the simplest form — your name, website URL, or a copyright notice rendered directly onto the image. They are quick to set up, universally readable, and do not require a separate asset file. Image watermarks, on the other hand, use a logo, stamp, or graphic overlay. They tend to look more professional and are harder to remove because they contain complex shapes and gradients rather than simple text. Many professional photographers use a combination approach: a logo watermark in one corner for branding, and a tiled text watermark across the entire image for additional protection. ConvertKr supports both modes, making it easy to experiment with different styles until you find what works best for your content.

Choosing the Right Opacity and Position

Opacity controls how visible the watermark is against the underlying image. A low opacity (10-30%) creates a subtle, nearly invisible mark that protects without distracting — ideal for portfolio previews where you still want the viewer to appreciate the composition. A medium opacity (40-60%) strikes a balance between visibility and aesthetics, which is common for social media posts and blog images. A high opacity (70-100%) makes the watermark very prominent, useful for proof images sent to clients before payment or for images distributed in public galleries where theft prevention is the top priority. Position also matters: corner placement is the most common, but it is also the easiest for someone to crop out. Center placement or tiling provides much stronger protection because the watermark overlaps the main subject of the image.

Tiling for Maximum Protection

Tiling repeats the watermark in a regular pattern across the entire image surface. This is the most effective anti-theft technique because it is virtually impossible to crop or clone-stamp out a watermark that covers the entire image. Stock photography agencies like Shutterstock, Getty Images, and Adobe Stock all use tiled diagonal watermarks on their preview images. To create a professional tiled watermark with ConvertKr, enable the tiling checkbox, set a rotation angle between -30 and -45 degrees for the classic diagonal look, and adjust the tile spacing to control density. A spacing of 150-200 pixels works well for most images, but you may want tighter spacing for high-resolution photos and wider spacing for smaller images to avoid visual clutter.

Best Practices for Watermarking

Keep your watermark consistent across all your images for brand recognition. Use the same font, color, and position every time so that viewers associate the watermark with your brand. For white or light images, use a dark watermark color; for dark images, use a light color. If your images vary significantly in tone, consider using a white watermark with a subtle drop shadow (you can achieve this by layering two slightly offset text watermarks). Always keep an unwatermarked copy of your original files stored securely, since watermarking is a one-way process that permanently alters the image. Finally, test your watermark at different sizes. What looks great on a 4000-pixel-wide photo may be barely visible when the image is resized to 800 pixels for web display. Adjust the font size or logo scale accordingly for each intended output size.

FAQ

Frequently Asked Questions

Common questions about the Image Watermark tool.

Is the watermark tool free?

Yes, completely. There are no premium tiers, no per-image fees, and no daily usage limits. Every feature — text watermarks, image watermarks, tiling, rotation, and all controls — is available at no cost. Your output images are never branded by ConvertKr.

What image formats are supported?

The tool accepts PNG, JPG (JPEG), and WEBP images as the base image. For image watermarks, the same formats are accepted for the overlay logo or stamp. Your watermarked output is saved in the same format as the original input.

Can I use my own logo as a watermark?

Yes. Switch to "Image" watermark mode and upload your logo, stamp, or any image file in PNG, JPG, or WEBP format. Use the scale slider to resize it and the opacity slider to control transparency. PNG logos with transparent backgrounds work particularly well.

What does the tiling option do?

Tiling repeats your watermark in a grid pattern across the entire image. This makes it much harder for anyone to crop or remove the watermark. You can adjust the spacing between repetitions and rotate the entire grid for a professional diagonal pattern commonly used by stock photography sites.

Can I adjust the watermark position?

Yes. The 9-point position grid lets you place the watermark in any of nine standard positions: three across the top, three in the middle, and three at the bottom. The margin slider fine-tunes how far the watermark sits from the image edge. These controls are used for single-placement mode; tiling mode covers the entire image automatically.

Is there a live preview?

Yes. Every change you make — text, font, color, opacity, position, tiling, rotation — is reflected in real time on the preview canvas. You can see exactly how the watermarked image will look before downloading.

Are my images uploaded to a server?

No. All processing happens entirely in your browser using JavaScript and the HTML5 Canvas API. Your images never leave your device. ConvertKr cannot see, access, or store your files at any point during the process.

Does the tool work on mobile devices?

Yes. The image watermark tool is fully responsive and works on smartphones, tablets, and desktops. Any modern browser including Chrome, Firefox, Safari, and Edge is supported. Touch controls work for all sliders and position buttons.

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