Batch Image Watermark
Free online batch watermark tool. Add text or image watermark to multiple images. No download required, process locally for privacy. Protect copyright, unify brand identity.
Add watermarks to multiple images at once. Protect your photos and brand your content with text or image watermarks. Customize position, opacity, and size across all images. Free batch watermarking tool.
How to Batch Add Watermarks
Batch Upload Images
Click the upload area or drag in multiple images. Supports JPG, PNG, WebP format mixed upload. Select dozens of images at once.
Set Watermark Parameters
Choose text watermark or image watermark, set content, position, opacity, size and other parameters. Real-time preview available.
One-Click Batch Add
Click the batch add button and the tool will process all images sequentially. View each image's processing progress in real-time.
Batch Download Results
Download watermarked images individually, or package as ZIP for one-time download of all images. Filenames remain unchanged for easy management.
Core Features
Text and Image Watermarks
Supports two watermark types. Text watermark allows customizing content, font, color, and size, suitable for adding copyright statements, author signatures, URLs and other text information. Image watermark allows uploading logos, signatures, or patterns, suitable for adding brand identifiers or personalized marks. Both types support opacity adjustment, serving identification purpose while not over-blocking image content. Choose appropriate watermark type based on needs, or combine both for optimal identification effect.
Nine-Grid Position Selection
Provides nine-grid position presets, including top-left, top-center, top-right, middle-left, center, middle-right, bottom-left, bottom-center, bottom-right nine positions, one-click selection of watermark placement position. Can also choose tile mode, covering entire image with watermark in grid pattern, effectively preventing watermark removal through cropping. Position selection combined with margin adjustment allows precise control of watermark's specific position in image, meeting different scenario requirements for watermark position.
Adjustable Opacity
Watermark opacity can be freely adjusted between 0-100%, ensuring watermark is clearly visible for identification purpose while not over-blocking image content affecting appearance. We generally recommend text watermark opacity set between 30-60%, image watermark set between 20-50%, both recognizable and not obtrusive. For copyright protection scenarios, opacity can be appropriately increased to ensure watermark is difficult to remove. For brand identification scenarios, opacity can be appropriately decreased to maintain image aesthetics.
Batch Process Multiple Images
Support uploading dozens of images at once for batch watermarking, applying the same watermark settings uniformly. Download individually or package as ZIP for one-time download. Batch processing is suitable for scenarios requiring watermarking large quantities of images, such as e-commerce product image copyright protection, photography work batch identification, social media image brand unification, greatly improving processing efficiency. All processing executes in local browser multi-threading, speed depends on device performance.
| Position Option | Description | Suitable Scenario | Anti-Removal Difficulty |
|---|---|---|---|
| Bottom-right | Image bottom-right | Brand identification, signature | Lower |
| Center | Image center | Copyright protection, preview images | Higher |
| Nine-grid selection | Nine positions selectable | Flexible layout | Medium |
| Tile coverage | Grid covers entire image | Anti-cropping, strong protection | Very high |
Use Cases
E-commerce Product Image Copyright Protection
E-commerce store product images are easily stolen by competitors. Adding store logo watermark can effectively protect copyright. Batch watermarking can process all product images at once, uniformly adding store identification, serving both anti-theft purpose and enhancing brand exposure. We recommend placing watermark near product main body or using tile mode to increase removal difficulty, while controlling opacity to avoid over-affecting product display effect.
Photography Work Batch Watermarking
Photographers need to add signature watermarks to works before delivering to clients to prevent unauthorized use. Batch watermarking can process entire sets of works at once, uniformly adding photographer signature or studio logo. We recommend using center or tile position to improve protection strength, with moderate opacity ensuring watermark is visible but doesn't affect work appreciation. For commercial photography works, watermarking is an important means of maintaining copyright and brand promotion.
Social Media Image Brand Identification
Brands uniformly adding brand identifiers to images published on social media can enhance brand exposure and recognition. Batch watermarking can process all images to be published at once, uniformly adding brand logo or name watermark. We recommend placing watermark in bottom-right and other positions that don't block main content, with moderate opacity maintaining image aesthetics. Unified brand watermark allows fans to quickly identify brand content in information streams, improving brand memorability.
FAQ
What's the difference between text watermark and image watermark?
Text watermark uses text content as watermark, with customizable text content, font, color, and size, suitable for adding copyright statements, author signatures, URLs, dates and other text information. It's simple to create and has small file size. Image watermark uses uploaded image as watermark, suitable for adding logos, signature patterns, brand identifiers and other graphical information, with more professional visual effect but requires preparing watermark image in advance. Both types support opacity adjustment and position selection. Choose appropriate watermark type based on needs - text watermark for simple text identification, image watermark for brand logos and other graphical identifiers.
How do I choose watermark position?
Provides nine-grid position presets and tile mode. Bottom-right is the most commonly used position, not blocking main content and conforming to reading habits, suitable for brand identification and signatures. Center position has higher difficulty of removal, suitable for copyright protection and preview images. Tile mode covers the entire image with watermark in grid pattern, with best anti-cropping removal effect, suitable for strong copyright protection scenarios. When choosing position, consider image main content to avoid watermark blocking key information. For copyright protection scenarios, we recommend using center or tile mode. For brand identification scenarios, we recommend using bottom-right and other positions that don't affect appearance.
How should I set opacity appropriately?
Opacity setting depends on watermark purpose. For copyright protection scenarios, we recommend setting opacity between 40-70%, ensuring watermark is clearly visible and difficult to remove, but not too high to avoid over-blocking image content. For brand identification scenarios, we recommend setting opacity between 20-40%, serving identification purpose while maintaining image aesthetics. Text watermark opacity can be slightly higher (30-60%) because text itself is thin. Image watermark opacity can be slightly lower (20-50%) because image watermark area is larger. We recommend adjusting opacity through real-time preview to find the optimal value that's both recognizable and doesn't affect appearance.
Is there a limit on batch processing quantity?
Theoretically there's no hard quantity limit, but actual processing capability is affected by device memory and performance. Generally, home computers can smoothly process dozens of images, and better-performing devices can handle hundreds. Since all processing completes in the browser locally, image data occupies local memory. We recommend keeping single batch processing within 50 images for optimal experience. If you have particularly large image quantities, process in batches to avoid browser lag or crashes. Processing speed is typically several to dozens of images per second, depending on image resolution and watermark complexity. Batch processing uses uniform watermark settings to ensure consistent watermark effects across all images.
How do I adjust watermark size?
Text watermark size can be adjusted through font size, supporting custom font size values, from small identification to large watermark. Image watermark size can be adjusted through scaling ratio, supporting setting watermark size by percentage or pixel value. Watermark size should be set reasonably based on image size and watermark purpose - too small is difficult to recognize and doesn't serve identification purpose, too large over-blocks image content. We recommend text watermark font size set to 3-8% of image short edge, image watermark size set to 10-25% of image short edge. During batch processing, watermark automatically adapts to each image's size, ensuring consistent proportional effects on different sized images.
How do I download all images after batch watermarking?
Two download methods are provided. First, individual download - click each image's download button to save separately, suitable for scenarios requiring selective saving of some images. Second, package as ZIP file for one-time download of all - all watermarked images will be packaged into one ZIP archive, and after downloading, extract to get all images. Watermarked images maintain original filenames unchanged, convenient for matching in projects. Package download is especially suitable for processing large quantities of images, avoiding the tedious operation of saving one by one. We recommend downloading promptly after processing completes to avoid data loss from browser closure.