Add Watermark to Image Online Free
Add a text or logo watermark to any image directly in your browser — no software, no upload, no signup. Set position, opacity, size, font, and rotation angle, then download as JPEG, PNG, or WebP.
Drop your image here
PNG, JPG, WebP, GIF — any image format
Browse fileHow the Watermark Adder Works
- 1Drop or click to upload your image. Any browser-readable format is accepted — JPEG, PNG, WebP, GIF, and more.
- 2Choose Text Watermark to type custom text, or Image / Logo to upload a PNG logo file.
- 3Adjust settings: font, color, opacity, size, and rotation angle for text; or logo size and opacity for image mode. Pick one of nine positions using the placement grid.
- 4Select an output format, click Apply Watermark, and download the result. The original image is never modified.
Text vs Logo Watermarks
Text watermarks are fast to set up — type your copyright notice, brand name, or URL, choose a font and color, and the tool renders it at native resolution. Rotating the text by −30° or −45° makes it harder to crop out while keeping the photo usable. White text at 50–70% opacity is readable on both light and dark backgrounds.
Logo watermarks place your brand mark — ideally a PNG with a transparent background — over the image. Set the logo size as a percentage of the image width so it stays proportional across different image resolutions. A corner placement at 15–20% size and 60% opacity is standard for photography portfolios and e-commerce product images.
Tips for Effective Watermarks
Use a transparent PNG for logos
Export your logo as PNG-24 with transparency enabled. A JPEG logo adds a solid background rectangle that looks unprofessional on photos.
White text works almost everywhere
A white text watermark at 50–60% opacity is legible on most photography. Add a very slight dark shadow in your design tool for extra contrast on light areas.
Diagonal angle deters removal
Setting the text angle to −30° or −45° makes the watermark span more of the image, making it much harder to crop or clone-stamp out.
Match opacity to your use case
For copyright protection, use 50–70% opacity. For subtle branding on product photos, 20–35% is less distracting. Full 100% opacity is rarely the right choice.
Center covers the critical area
Bottom-right is conventional, but easy to crop out. A centered watermark at moderate size and opacity protects the subject while keeping the image presentable.
Export as PNG for perfect quality
PNG output preserves every pixel at full quality. Use JPEG or WebP when file size matters — 92% quality (the default) is visually lossless for most images.
Frequently Asked Questions
Is my image uploaded to a server?
No. All processing uses the browser's Canvas API. Your image is never transmitted anywhere — it stays entirely on your device. The tool works without an internet connection once the page has loaded.
What is the difference between text and logo watermark modes?
Text mode burns a custom string directly onto the image using a canvas font renderer. You can set the font family, size, color, opacity, and rotation angle. Logo mode overlays a second uploaded image (typically a PNG with a transparent background) at a chosen size and opacity. Logo mode is better for brand marks and symbols; text mode is faster for copyright notices.
What image formats can I watermark?
Any format the browser can decode — JPEG, PNG, WebP, GIF, AVIF, BMP, SVG, and more. You can also choose the output format (JPEG, PNG, or WebP) independently of the input format.
Why use a PNG with a transparent background for the logo?
A PNG with transparency lets only the logo artwork show on top of your image. A JPEG logo has a solid background (usually white or black) that would create a visible rectangle over your photo. Export your logo from a design tool as PNG-24 with transparency enabled.
What opacity level is best for a watermark?
It depends on the purpose. For copyright protection that should be visible and hard to remove, 50–70% opacity works well. For a subtle branding stamp on product photos, 20–40% is less intrusive. A completely opaque watermark (100%) is rarely ideal — it obscures the image too heavily.
How does the font size percentage work?
Font size is expressed as a percentage of the shorter side of the image. At 5%, a 1000×800 image gets a font size of 40 px; a 4000×3000 image gets 150 px. This keeps the watermark proportional regardless of resolution — useful when watermarking images of different sizes.
Can I add multiple watermarks?
Not in a single operation. To add multiple watermarks, apply the first watermark and download the result, then upload that output and add the second watermark. Each application is non-destructive to the original file since the tool always reads from the uploaded source.
Does the watermark reduce image quality?
The watermark itself does not reduce quality — it is drawn at full resolution on a canvas matching the original image dimensions. If you export as JPEG or WebP, the encoder applies its own compression. Exporting as PNG preserves pixel-perfect quality at the cost of a larger file size.