Free Online Image Watermark Tool

Add Watermark to Images Online

This free online image watermark tool lets you add text watermarks or image watermarks to one or more images in your browser. You can upload JPG, PNG, and WebP files, adjust opacity, rotation, position, layout mode, and output format, then export the processed images.

Everything runs locally in the browser without uploading your images to a server. It works well for product images, marketing graphics, social media assets, screenshots, photography, design drafts, and branded visuals.

If you are searching for terms like “add watermark to image online,” “batch image watermark tool,” “add logo to image,” “text watermark for photos,” “watermark product images,” or “tile watermark across images,” this tool is built for exactly those use cases.

What this image watermark tool is useful for

  • add CONFIDENTIAL, DRAFT, SAMPLE, or internal-use text watermarks to images
  • add a company logo, seal, or transparent graphic watermark to photos and design files
  • batch watermark product images, article graphics, posters, and social media creatives
  • tile a repeating watermark across the entire image for stronger protection
  • label preview images, sample images, and test graphics before sharing
  • add branding and distribution reminders to outgoing image assets

Supported watermark options

  • Text watermark: supports Chinese, English, numbers, multi-line text, color, font size, opacity, and rotation
  • Image watermark: upload JPG, PNG, or WebP watermark graphics such as logos or stamps
  • Single watermark: place one watermark in a fixed position such as top left, center, or bottom right
  • Tile across image: repeat multiple watermarks across the full image
  • Batch processing: upload multiple images and process them with one shared configuration
  • Output format: keep the original format or export as JPG, PNG, or WebP

How to add a watermark to images online

  1. Upload one or more images
  2. Choose text watermark or image watermark
  3. If you use a text watermark, enter the text and adjust font size, color, opacity, and rotation
  4. If you use an image watermark, upload a logo, brand mark, seal, or other watermark graphic
  5. Choose whether to place one watermark or tile the watermark across the full image
  6. Set position, opacity, rotation, and output format
  7. Process the images and review the results directly in the image list
  8. Download one image at a time or export all results as a ZIP file

This workflow is useful when you need to watermark a batch of product photos, branded graphics, screenshots, or training images without editing each file manually.

  • Opacity: 10% to 25% is common for readable but visible watermarks
  • Rotation: -30 to -45 degrees is common for diagonal watermarks
  • Single watermark position: good for logos, corner marks, and stamps
  • Tiled layout: good for confidential, sample, and preview images
  • Image watermark scale: keep logos moderate so they do not cover the main subject

When to use text watermark vs image watermark

Use text watermark when:

  • you need to add words like Confidential, Draft, Sample, Internal Use, or Preview
  • you want to change the wording quickly
  • you need a simple and flexible watermark style

Use image watermark when:

  • you want to place a company logo on images
  • you already have a transparent brand mark or stamp graphic
  • visual branding matters more than plain text

In many teams, the practical pattern is:

  • logo watermark for external-facing images
  • text watermark for internal-use materials
  • tiled text watermark for sample, test, and preview graphics

Single watermark vs tiled watermark

  • Single watermark: better for logos, signatures, store marks, and subtle branding
  • Tiled watermark: better for stronger protection against reuse, screenshot spreading, or casual copying

If you want the image subject to stay as clean as possible, use a single watermark. If you want a stronger visible restriction, use the tiled layout.

Batch watermarking multiple images

This tool supports batch image watermarking. You can upload multiple images, configure the watermark once, and process the whole set with the same settings.

That works well for:

  • adding the same store logo to many product images
  • applying copyright watermarks to a photography batch
  • adding a brand mark to article and social media graphics
  • labeling internal screenshots and training images
  • marking design drafts, mockups, and preview assets

If you need to watermark dozens or hundreds of images with one consistent setup, batch processing saves a lot of repetitive work.

Common use cases

  • add a store logo to product images
  • watermark photography with copyright text or logo
  • mark internal screenshots and training materials
  • label mockups, poster drafts, and preview graphics
  • batch brand social media image assets
  • add source labels to outbound marketing images
  • add restricted-sharing notes to client preview images

How to choose the output format

  • Keep original format: the most convenient choice for most cases
  • PNG: good when you want sharper text edges and cleaner graphic edges
  • JPG: usually smaller for photo-heavy images
  • WebP: often smaller than JPG or PNG for web-oriented workflows

If the source image is already JPG, keeping the original format is usually enough. If edge sharpness matters more, PNG can be a better choice.

Privacy and security

Image reading, watermark generation, batch processing, and export all happen locally in your browser without sending files to a server.

Things to keep in mind

  • A watermark is visible marking, not a full copyright or permission system
  • Very small images can be overwhelmed by large text or oversized logos
  • If the watermark feels too strong, lower the opacity or reduce the watermark size
  • For print use, export and spot-check the final sharpness before distributing the full batch

Who this tool is for

  • ecommerce teams that need to add store logos to product photos
  • marketing and content teams that need brand marks on image assets
  • photographers who need copyright marks on their images
  • companies that need internal-use or preview labels on screenshots and training visuals

If your main goal is to add a text watermark to images, add a logo watermark to photos, batch watermark image files, or tile a watermark across a full image, this tool is built around those practical workflows.