Mark Line - Batch Photo Watermarking Tool

100% Private · Runs In Your Browser · Zero Server Uploads

Stamp your photos with your logo or watermark in full resolution. Everything processes locally on your device - your images and logos never leave your computer.

Drop photos here

or click to browse - add one or several - JPG, PNG, WEBP, HEIC

01 / Photos

No photos yet.

No accounts, no uploads, no database. Your photo and logo are decoded in memory and never leave this browser tab - refreshing the page clears everything.