Photo Filter (PixPix)

Ten preset options can be applied with just one click – including Black and White, Retro Brown, Film Effect, Warm Tone, Cool Tone, Black-and-White Film Look, and Vivid Color. After that, you can manually adjust the four parameters of Brightness, Contrast, Saturation, and Hue.

The purpose of setting preset values is to provide a starting point. If you adjust the parameters from scratch, it’s very easy to end up with an image whose colors appear abnormal. It’s much better to first determine the general direction and then make fine-tuning adjustments; this way, the success rate will be significantly higher. In fact, four parameters are sufficient. The most common problems with everyday photos usually involve underexposure, grayish tones, or dull colors.

When sharing a set of images, make sure to use the same parameters throughout. If you adjust each image individually, the overall effect will be disrupted when they are combined—this is especially true for grid layouts and travel photo albums.

The export is done at the original resolution, without any watermarks added, and the quality is not reduced just because it’s free. For more sophisticated color adjustments, professional software is still necessary; however, for everyday use, this version is more than sufficient.