Batch Photo Watermark Tool (Python): Add Text or Logo Watermarks to a Whole Folder at Once

Details

Stop watermarking photos one by one in an editor. Point this script at a folder, choose your text or logo, and every image gets a clean, consistent watermark - in a separate folder, with your originals safe.

What's inside

• watermark.py (single file)
• requirements.txt (Pillow)
• Text, logo and tiled watermarks; 7 positions
• Dry run, recursive folders, custom font/colour/suffix
• Self-test with 12 checks
• 5-page PDF guide with recipes
• Examples.png

Good to know

• Needs Python 3.8+ and the free Pillow library (one install command in the guide).
• Self-test passes on Linux with Python 3 and Pillow 12; Windows/macOS steps are in the guide but were not tested by me.
• RAW and HEIC files aren't supported - export them to JPG first.

Format & delivery

• One ZIP file containing:
• Watermark-Guide.pdf
• Examples.png
• requirements.txt
• tests/run_tests.py
• watermark.py
• README.txt
• Instant digital download after checkout. You also get the link by email.

Licence: personal use. Please don't resell or share the files.

Questions? joakimberg1990@gmail.com