Image Watermark guide
Place a readable text watermark on a JPG, PNG, or WebP image with adjustable position, color, size, and opacity.
What this tool does
The Image Watermark tool draws the selected image onto a browser canvas and adds one text label. You can edit the wording, choose any browser color, place it in a corner or the center, set its opacity, and size it as a percentage of the image width. A contrasting outline is added around the text to improve readability across mixed light and dark areas.
The tool automatically reduces the font size when a long label would exceed the safe width of the image. It preserves the source pixel dimensions and exports to the corresponding JPG, PNG, or WebP format. Transparency is supported for PNG and WebP input where the browser encoder supports it. The new watermark is permanently combined with the exported pixels; the original file on the device is never overwritten.
A visible watermark can identify a preview, communicate status, or discourage casual reuse, but it is not access control. Someone may crop, cover, reconstruct, or remove it. Do not rely on a watermark to protect confidential material that should not be distributed.
How to use it
- Select one JPG, PNG, or WebP image within the shown limit.
- Enter a short label such as a name, copyright notice, or review status.
- Choose a position and text color.
- Adjust opacity and relative text size for the intended viewing size.
- Choose Apply watermark, download the result, and inspect it at full resolution.
For a subtle credit, use a corner position and moderate opacity. For an obvious review mark, use the center with larger text. Check important subjects near the chosen position so the text does not hide faces, product details, instructions, or accessibility-critical information.
Benefits
- Offers five predictable watermark positions
- Scales text relative to the actual image width
- Adds a contrast outline automatically
- Preserves the source dimensions and common formats
- Processes and exports the image without an upload
Choosing useful watermark settings
Very low opacity may disappear after social-media compression, while full opacity can dominate the picture. White generally works on darker scenes and black on lighter scenes, but the outline only provides limited help on complex backgrounds. Inspect the final file in the place where it will appear, not only on the tool page.
Keep wording concise. Long text becomes smaller to fit and can be unreadable in thumbnails. A short brand name or status label usually performs better than a complete sentence.
Applying the label re-encodes the canvas. The exported copy may omit EXIF, XMP, comments, and embedded color profiles even though the visible dimensions are preserved. A watermark also does not certify ownership or remove private details elsewhere in the image, so retain the original and inspect the final file before publishing it.