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Bulk Image Watermark

This bulk watermark tool stamps the same text or logo on a whole batch of photos in your browser and returns them in one ZIP. Type a credit line or upload a PNG logo, pick one of nine positions or tile the mark across the whole image, and set opacity, rotation, font and colour once for the entire set. Size is set as a percentage of each image's width, so the mark looks the same on a phone photo and a large camera file. Photographers use it to batch watermark client proofs, and online sellers use it to add a logo to multiple photos before listing them. Your images are processed on your device and never uploaded.

Always freeNo sign upRuns in your browser
Bulk supported. Drop several files for one ZIP download. You can also paste an image with Ctrl+V.

How to use

01

Add one photo, then the rest

Drop a single photo first to get a live preview while you set things up. Then click Add more files for bulk mode, or drop your whole batch at once if you already know the settings.

02

Design the watermark

Choose Text watermark or Logo watermark. Set the text, font, colour and size, or upload a PNG logo and its width. Pick a position and margin, or tick Tile across the whole image.

03

Run the batch

Adjust opacity and rotation, then click Add watermark. When every file shows a tick, click Download all (ZIP) to save watermarked-images.zip with all the marked photos.

Why Bulk Image Watermark

Watermark size and opacity guide

These are starting points, not rules. Try them on one typical photo with the live preview, then adjust. A mark that is too strong distracts from the photo, and one that is too faint is easy to remove.

Some marketplaces do not allow watermarks on the main product image, so check the listing rules before marking product photos.

UseMark and sizeOpacityPlacement
Instagram and social postsText at 3 to 4% or a logo at 12 to 18% of width50 to 70%Bottom corner
Client proofsYour name or PROOF, text at 5 to 8%25 to 40%Tiled at about -30 degrees
Stock photo previewsLogo or site name at 15 to 25%20 to 35%Tiled
Product photosSmall logo at 10 to 15%40 to 60%Bottom corner, clear of the product

Common questions

Can I add a logo watermark to multiple photos at once?
Yes. Choose Logo watermark, upload your logo, and set its width as a percentage of each photo's width. A PNG with a transparent background looks cleanest, and JPG, WebP and SVG logos also work. The same logo, size and position are applied to every photo in the batch.
How do I watermark photos of different sizes so the mark looks the same?
You do not need to do anything special. Text size, logo width and edge margin are all set as a percentage of each image's width, so a mark at 4% looks the same on a 1080 px phone photo and a 6000 px camera file.
Where can I place the watermark on each photo in the batch?
Pick one of nine positions: the four corners, the middle of each edge, or the center. The margin slider sets the distance from the edge. Tick Tile across the whole image to repeat the mark over the entire photo instead.
How do I make a tiled watermark across the whole photo?
Tick Tile across the whole image. The mark repeats in staggered rows over the full photo, and rotation switches to -30 degrees if it was at 0, which you can change. Tiling is hard to crop out, so it suits proofs and previews.
Can I preview the watermark before processing the whole batch?
Yes, when one photo is loaded the tool shows a live preview that updates as you change settings. Once you add more files it switches to the batch queue, so set things up on one typical photo first, then add the rest.
What opacity and size should a photo watermark have?
For social posts, a small mark at 50 to 70% opacity in a corner is usually enough. For proofs you do not want reused, a tiled mark at 25 to 40% opacity is harder to remove. The guide below lists starting points for common uses.
Does bulk watermarking change the image format or quality?
JPG, PNG and WebP files keep their format and are saved at 92% quality after the mark is drawn. Other formats, such as GIF or BMP, are saved as PNG. Watermark copies, not your only originals.
What are the output files called after bulk watermarking?
Each file keeps its name with -watermarked added, so beach.jpg becomes beach-watermarked.jpg. The whole batch downloads as watermarked-images.zip, and a single photo downloads on its own.
Are my photos uploaded when I watermark them in bulk?
No. The watermark is drawn on a canvas in your browser and the ZIP is built on your device. Client photos and unreleased product shots stay on your computer.

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