Images · Free browser tool
Private Image Watermark Tool
Add a text or image watermark to a JPG, PNG, or WebP locally, preview the placement, and download only after the result is decoded and verified.
Runs on this device
No file upload
Free to use
Private workspace
Place a visible watermark without uploading the source image or watermark asset.
Ready.
Selected file— · Reading…
Choose a file to begin
Place a visible watermark without uploading the source image or watermark asset.
What this tool does
A focused job, with a visible boundary.
Place a visible watermark without uploading the source image or watermark asset.
Live position, opacity, scale, and rotation preview
Decoded output verification
Know the limits
Local does not mean unlimited.
Browser processing protects the file from an upload workflow, but the browser, device, output format, and selected settings still matter.
- A visible watermark can still be cropped, covered, or edited by someone else.
- Browser re-encoding removes source metadata and can change compression or color behavior.
- This tool does not add cryptographic ownership or provenance credentials.
Four local steps
How to use image watermark.
- 01
Choose a JPG, PNG, or WebP image.
- 02
Configure text or select a watermark image, then adjust placement and appearance.
- 03
Review the live preview and create the final copy locally.
- 04
Download the verified result and inspect it before publishing.
Clear answers
Image watermark questions.
Can I use a logo instead of text?
Yes. Select image-watermark mode and choose a local PNG, JPG, or WebP logo.
Does a watermark prove ownership?
No. It is a visible label, not cryptographic proof, and it can potentially be removed or altered.
Are either of the images uploaded?
No. The source and optional watermark asset are decoded and combined in this browser.