Sometimes you want to make your images smaller for sharing, or add a watermark so others don’t repost without credit. You don’t need a computer — just the right app on your phone.
When to Resize
- Uploading to websites or platforms with size limits
- Sending photos over email or messaging apps
- Preparing for print (larger files) or web (smaller files)
When to Watermark
- Sharing work online where theft or reposting is common
- Branding photos with your name, handle, or logo
- Showing drafts or previews to clients
Useful Apps
- Snapseed: Resize and export at different resolutions
- Photo & Picture Resizer (Android): Simple batch resizing
- Watermark Photo (iOS): Add logos, text, or signatures
- Lightroom Mobile: Add subtle watermarks during export
Tips
- Keep watermarks tasteful and low-opacity to avoid distracting from the photo
- Save an unmarked original for printing or archival
- Always test image quality after resizing to avoid pixelation