Watermark Image
Add custom text or logo watermarks to your images with position, opacity, and tile options. Process batches locally in your browser without file uploads.
JPG, PNG, WebP, GIF · single file
Tips
- Keep overlay opacity between 25% and 40% to balance subject visibility with effective copyright protection.
- Use tiled mode to repeat your mark across the entire canvas, preventing unauthorized removal by simple cropping.
- Upload logo overlays as transparent PNG files so an opaque background does not cover your underlying image.
How to use it
- 1 Upload one or more source images from your device.
- 2 Enter your watermark text or upload a transparent PNG logo file.
- 3 Adjust watermark opacity, position, scale, or toggle the repeating tile grid.
- 4 Download the stamped images individually or as a complete batch.
What you should know
Online creators and e-commerce merchants frequently watermark product photographs and graphics before publication to discourage unauthorized reuse and content scraping. While EXIF metadata tags store copyright details, scrapers and social platforms routinely strip embedded metadata during upload. Visual watermarking composites a raster logo or rendered vector typography directly onto the base pixels using alpha-channel blending. This permanent stamp protects your visual property across web platforms. For clean results, balancing opacity ensures high contrast against both dark and bright image regions without completely masking product details beneath the overlay layer.
This tool overlays custom text or transparent PNG logos onto single or batch images directly in your browser. You can control watermark opacity, scaling, canvas alignment, and repetition via full-surface tiling. Because processing executes locally via client-side canvas APIs, your source files are never uploaded to remote servers. Output files are re-encoded into standard formats such as JPEG or PNG, which flattens original multi-layer image structures and strips raw camera metadata. Choose lossless PNG for graphics requiring crisp transparency or JPEG with adjustable quality factors for compact web delivery.
Frequently asked questions
Does watermarking reduce the original image quality?
The watermark itself is composited cleanly, but re-encoding to JPEG introduces minor lossy compression artifacts depending on your export settings. Choosing PNG output preserves full pixel fidelity without compression loss.
Can someone remove a tiled watermark easily?
Tiled watermarks cover the entire image surface, making removal through simple cropping impossible. Eliminating a tiled overlay requires extensive manual inpainting, which significantly deters casual image theft.
Are my private photos uploaded to an external server?
No, all watermark compositing and file re-encoding occur locally within your browser using client-side JavaScript. Your original and processed images never leave your device.
Guides
Articles and format references related to this tool.
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