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Image Compressor & PDF Creator

Image Watermark

Add customizable text watermarks to images. Choose font family, size, color, opacity, position (9-point grid), rotation angle, and spacing for tiled watermarks.

Image tools

In brief

Add customizable text watermarks to images. Choose font family, size, color, opacity, position (9-point grid), rotation angle, and spacing for tiled watermarks.

Reviewed: 2026-09-18

What this tool supports

  • Add customizable text watermarks to images. Choose font family, size, color, opacity, position (9-point grid), rotation angle, and spacing for tiled watermarks.
  • All processing runs locally in your browser
  • No data uploaded, stored, or transmitted
  • Works offline after initial page load
  • Instant results with download support

How to use Image Watermark

Add text or image watermarks to photos using browser-side Canvas. Customizable position, opacity, and rotation. No uploads required.

  • Step 1

    Upload your image

    Drag and drop or click to upload. The tool accepts JPEG, PNG, WebP, and BMP files.

  • Step 2

    Choose watermark type

    Select Text for a text watermark or Image for a logo. For text, enter your watermark text and choose font, color, and size.

  • Step 3

    Position and style

    Drag the watermark to the desired position. Adjust opacity, rotation, and size using the controls.

  • Step 4

    Apply and download

    Click Apply to render the watermark onto the image. Download the watermarked result to your device.

Common mistakes

Using a watermark that's too transparent to be visible

Consequence: Overly faint watermarks provide no copyright protection as they can be easily removed.

Fix: Use 30-50% opacity for visible but non-intrusive watermarks.

Placing watermark in corners where it can be cropped out

Consequence: Corner watermarks are easily removed by cropping the image edges.

Fix: Position watermarks across the center or diagonally for better protection.

Using the same watermark position for all images

Consequence: Predictable watermark placement makes automated removal easier.

Fix: Vary the position, size, and rotation across different images.

Setting watermark opacity too high

Consequence: An opaque watermark obscures the underlying image content.

Fix: Use 20-40% opacity for subtle watermarking that does not block content.

Using a watermark color that matches the image

Consequence: A watermark that blends into the image background becomes invisible.

Fix: Choose a contrasting color or add a shadow/outline to make the watermark visible.

Best practices

  • Check supported file formats before uploading
  • Process files in batches for best performance
  • Prefer moderate opacity and a corner position so the watermark stays readable without hiding the subject.

Connected workflows

Process file

Image Watermark

Upload the image, enter the watermark text, position it by dragging, and adjust opacity before export.

  1. Upload
  2. Process
  3. Download

Browser limitations

  • Very large files may be slow to process
  • Browser memory limits apply to very large images; files of several hundred megabytes are processed in a Web Worker with graceful degradation

Authoritative resources

PDF SpecificationPublisher: Adobe · Reviewed: 2026-09-18

Concrete examples

Input
Sample input
Result
Result

Example usage.

Frequently asked questions

How does image watermarking work?

Add text or image overlays to your photos using the Canvas API. Choose position, opacity, size, and rotation. The watermark is rendered directly onto the image in your browser.

Can I add a logo watermark?

Yes. Upload a PNG or JPG logo file and position it anywhere on the image. Adjust size, opacity, and rotation for the perfect placement.

Can I watermark multiple images at once?

Yes. Apply the same watermark settings to multiple images in sequence. Each image is processed independently in the browser.

Is my image data uploaded?

No. All watermarking happens locally in your browser using Canvas. Your images never leave your device.

Does the watermark reduce image quality?

The watermark is composited onto the original pixels. For JPEG output, you can choose the quality level. PNG output is lossless.

Can I adjust watermark opacity?

Yes, the opacity slider lets you set transparency from 0% to 100%.

What watermark positions are available?

The tool offers 9 positions across the image.

Can I use an image as a watermark?

Currently the tool supports text watermarks only.

Privacy and offline behavior

This tool processes all input locally in your browser. No data is uploaded, stored, or transmitted.