Heavy JPEG compression is a common reason pictures lose bite. The encoder throws away high-frequency coefficients so the file shrinks, and what remains is a flatter field of color with mushy transitions. You notice it first on brick, grass, and small type. Unsharp-mask sliders can fake an outline, but they do not invent the texture that was quantized away. A better approach is a dedic... https://mejorarcalidad.com/