Watermark images without losing quality
Every image keeps its exact original resolution. Choose PNG for pixel-perfect output or top-quality JPG and WebP.
🔒 100% Secure & Private: All watermark processing occurs instantly within your browser local RAM. Your commercial assets are never transmitted to any external server.
Drag & drop your images here
or browse files. JPG, PNG and WebP up to 50 MB each.
Live preview
Upload images to see the preview
Sizes are relative, so the watermark looks the same on every image whatever its resolution.
Your images never leave this device.
Add watermarks without losing image quality
Many online watermark tools quietly shrink your photos or save them at low quality. Here, every image keeps its exact original width and height: the watermark is drawn onto a full-resolution canvas and nothing is resized.
For pixel-perfect output, choose PNG, which is lossless. JPG and WebP are always re-saved, so even at 100% quality they are nearly, but not perfectly, identical to the original; between 92% and 100% the difference is invisible in normal viewing.
Your photos never leave your device
Watermarking usually happens right before publishing, while photos are still unreleased product shots, client work or personal documents. Upload-based tools copy those files to someone else's server. Here every image is decoded, stamped and saved inside your browser's memory, and nothing is uploaded. Output keeps the exact original pixel dimensions, and camera metadata such as GPS location is removed from the exported files.
Frequently asked questions
Will my photos be resized?
No. The output has exactly the same pixel dimensions as the original, whether it is an 800 px product photo or a 50-megapixel camera file.
Which format gives the best quality?
PNG is lossless and pixel-perfect but produces large files. JPG at 95–100% is near-lossless and much smaller, which makes it the usual choice for photos.
Is there a size limit?
Files up to 50 MB are accepted. On iPhone and iPad, browsers can only process images up to about 16 megapixels; larger photos show a clear message instead of producing a broken file.