How to use this image tool
- Select the images from your device.
- Set the options for this job.
- Choose Watermark images, review the result, and download the new file.
Add the same text watermark to several images, then download the processed set together in one ZIP file.
Every selected image is decoded separately, marked with the same text settings, exported as a new PNG, and added to a ZIP archive.
Text watermarking discourages casual reuse but does not provide cryptographic ownership protection.
Up to 30 PNG, JPEG, or WebP images, 120 MB total. Output is a ZIP containing PNG files.
| Input | PNG,JPEG,WEBP |
|---|---|
| Processing | Local browser session |
No. Processing runs in the browser. A pinned library is loaded only when needed, but your selected image bytes are not sent to it or to Callimage.
Canvas-generated image outputs generally omit EXIF and GPS metadata. Keep the original if that information matters.
Decoding, pixel processing, color profiles, and lossy output encoding can change color or fine detail slightly.
Yes, on a modern mobile browser, although large images may exceed available memory. The tool rejects unusually large inputs before intensive work.
Up to 30 PNG, JPEG, or WebP images, 120 MB total. Output is a ZIP containing PNG files.
| Privacy | Local processing |
|---|---|
| Large files | Browser memory limits apply |