If you were looking for a basic program but with good features to retouch images, you have found it. PhotoTrue is an image editor, simple and lightweight, which gives very good performance. And now it's free (before it was shareware): just enter this code: C50E45A3B0F4FE7D to work with it without limitations.
These are some of its features: read files or memory buffers, support BMP and JPEG, perform numerous actions (rotation, gamma adjustment, brightness and contrast adjustment, grayscale, image overlay, resize, draw lines and texts, change colors, etc.).
It is fast, reliable and with a pleasant interface. What more could you want?
You can free download PhotoTrue and safe install the latest trial or new full version for Windows 10 (x32, 64 bit, 86) from the official site.
Devices: Desktop PC, Laptop (ASUS, HP, DELL, Acer, Lenovo, MSI), Ultrabook
OS: Professional, Enterprise, Education, Home Edition, versions: 1507, 1511, 1607, 1703, 1709, 1803, 1809