WatermarkOn

Add Watermark to Photo Online

Put your name, a copyright notice or your logo on JPG, PNG and WebP photos in seconds. Live preview, any position, any opacity — and your photos never leave your device.

No uploads. No limits. No sign-up. And no watermark of ours on your files.

Drop images or PDFs here

JPG, PNG, WebP, HEIC, GIF, AVIF or PDF · multiple files allowed

🔒 Your files stay on your device — we never upload or store them.

Choose files
Live preview Sample image — add your files to preview them

💡 Tip: click or drag on the preview to move the watermark.

1 Watermark
PNG with transparency recommended
Transparent PNG to reuse in Word, PowerPoint, Canva…
2 Position

0% = left/top edge, 50% = centre, 100% = right/bottom edge. Keeps the same relative spot on every file, whatever its size.

Exact distance from the chosen corner to the watermark. In PDFs, 1 px = 1 pt (1/72 inch).

3 Output
PDF pages

🔒 Processed 100% in your browser. Files are never uploaded or stored.

Never uploadedYour images and PDFs are opened and processed by your own browser. They are not sent to our server or anyone else’s.
Never storedWe don’t keep any copy of your files, logos or results — there is no upload endpoint and no file storage at all.
Gone when you close the tabFiles only live in your browser’s memory while you work. Close or reload the page and they are gone.

Don’t take our word for it: after loading your files you can even disconnect from the internet and the tool keeps working. How we handle your files

Examples: before and after

Landscape photo with a © copyright text watermark in the bottom-right corner Original image without watermark
Copyright text on a photo · Try it
Photo protected with a repeating diagonal SAMPLE watermark Original image without watermark
Tiled “SAMPLE” pattern · Try it

How to add a watermark to photos

  1. Add your photos — drag them into the box above, choose them from your device or paste a screenshot. JPG, PNG, WebP, GIF and AVIF are supported.
  2. Write your watermark — for example © 2026 Your Name or your Instagram handle. Pick a font and color; enable Shadow or Outline so it stays readable on both light and dark areas. Prefer your logo? Switch to Image / logo.
  3. Place it — choose a preset (bottom-right is the classic photographer’s choice), drag it directly on the preview, or enter an exact percentage or pixel offset.
  4. Download — export in the original format or convert to JPG, PNG or WebP, optionally resized for the web.

Add a watermark to JPG, PNG and WebP

JPG: the most common photo format. Keep the quality at 90% or higher and the watermark won’t introduce visible compression. PNG: lossless and supports transparency — if your image has a transparent background, it is preserved. WebP: smaller files for websites with the same visual quality. You can keep each file’s original format or convert the whole batch to one format in the Output section.

Tips for watermarking photography

  • Size relative to the photo: the watermark size is a percentage of the image width, so photos with different resolutions all get a proportional watermark.
  • Opacity: 30–50% for portfolios and social media; 60%+ for client proofs.
  • Placement: corner marks give credit; a centred or tiled watermark over the subject actually protects the image.
  • Privacy bonus: exported images don’t keep the original EXIF metadata, so GPS location and camera serial numbers are removed.

Why use a browser tool instead of an app?

Editing software like Photoshop or Lightroom can add watermarks, but it takes setup time and usually a paid subscription. Most “free” online watermark sites upload your photos to their servers. WatermarkOn does neither: open the page, drop your photos, download. Everything happens on your own computer or phone, so it works on Windows, macOS, Linux, iPhone and Android — and we never see, upload or store your pictures.

Frequently asked questions

How do I add a watermark to a photo for free?
Drop your photo into the tool above, type your text or upload a logo, choose a position and click “Add watermark”. It’s free and needs no account.
How do I add a watermark to photos on my phone?
Open this page in Safari or Chrome, tap “Choose files”, select your photos from the gallery and follow the same steps. No app needed. See our iPhone guide.
Will adding a watermark reduce my photo quality?
With “Same as original” format and a quality of 90–100%, the difference is not visible. PNG export is lossless.
Are my photos uploaded or stored?
No. Your photos are processed by your browser and never sent to our server, so we can’t store them. Closing the tab clears them from memory.

Related guides

Image editors How to Add a Watermark in Photoshop Text and logo watermarks, opacity, tiled patterns and batch processing with Actions. Read guide → Image editors How to Add a Watermark in Canva Add a logo or text over your designs and photos using Canva’s transparency slider. Read guide → Mobile How to Watermark Photos on iPhone Two ways to watermark iPhone photos: Photos Markup, or batch in Safari without apps. Read guide →

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