Long before Facebook or Apple Photos, Picasa had a highly competent face detection engine. Version 3.9.138.150 refined the grouping algorithm, reducing false positives. You can tag faces once, and it will find that person across every folder on your PC.
Picasa 3.9.138.150 is widely considered the final build (or the last stable release) of Picasa for Windows before Google officially discontinued the product.
This version is not just a photo viewer. It is a lean, mean photo management machine. Here is what you get:
Because it was designed for older hardware, this version runs beautifully on almost any Windows machine manufactured after 2008.
| Component | Minimum Requirement | Recommended | | :--- | :--- | :--- | | OS | Windows XP SP3 / Vista | Windows 7, 8.1, 10 (32/64-bit) | | Processor | Intel Pentium 4 (1.8 GHz) | Core 2 Duo or better | | RAM | 512 MB | 2 GB (for large databases) | | HDD | 200 MB for install | + extra for thumbnail database (can reach 2-5 GB) | | Graphics | DirectX 9.0c | Any GPU with hardware acceleration | | Display | 1024x768 | 1280x1024 or higher |
Note: The 64-bit version was never officially released; Picasa is a 32-bit application. It runs flawlessly under WOW64 (Windows-on-Windows 64-bit) emulation.
Recommendation: If you choose to use this software, be aware that it is "abandonware." While generally safe to use for organizing local photos, it is recommended to back up your library regularly and ensure you download the installer from a reputable source if you do not already have it.
Picasa 3.9.138.150 is a specific legacy version of Google's image organizer and editor for Windows. While Google officially retired Picasa in 2016 to focus on Google Photos, many users still utilize this version for its offline management and specialized desktop features. Key Features of Version 3.9.138.150
This build includes the core functionalities that made Picasa a staple for desktop photo management: Picasa 3.9.138.150 for Windows
Automatic Organization: Scans your PC to automatically locate and sort pictures into visual albums by date.
Batch Editing: Allows you to apply fixes or tags to multiple photos simultaneously, saving time on large imports.
Face Recognition: Tags and groups photos based on faces, which can be used to create specialized "Face Movies".
Creative Tools: Includes features for creating photo collages, posters, screensavers, and basic video montages.
One-Click Fixes: Offers simple tools for red-eye removal, sharpening, and color filtering. Compatibility and Status
OS Support: Although it was released during the Windows 7/8 era, users have successfully run this version on Windows 10 and Windows 11.
Online Limitations: Since Google shut down the Picasa Web Albums service, online syncing and sharing features no longer function within the app.
Final Official Version: While 3.9.138.150 is a common stable build, the final release for Windows was version 3.9.141.259. Modern Alternatives Long before Facebook or Apple Photos, Picasa had
If you are looking for modern software with similar capabilities, consider these alternatives: Picasa 3.9.138.150 Win 10 - Microsoft Q&A
Introduction
Picasa is a free photo management software developed by Google. It allows users to organize, edit, and share their photos and videos. Picasa 3.9.138.150 is a specific version of the software designed for Windows operating systems.
System Requirements
Installation
Getting Started
Main Interface
The Picasa interface is divided into several sections: Recommendation: If you choose to use this software,
Photo Management
Editing Tools
Sharing Photos
Additional Features
Tips and Tricks
Troubleshooting
Uninstallation
Upon installation, Picasa scans your entire hard drive for images (JPG, BMP, GIF, PNG, RAW, PSD, AVI, MP4, etc.). It builds a searchable database that is famously fast. You can type “sunset 2015” and get results in milliseconds—a feat many modern apps still struggle with.