Preheat your oven to 350°F (175°C).
Grate the zucchini using a box grater or food processor. Place the grated zucchini in a clean kitchen towel and squeeze out the excess moisture.
In a large mixing bowl, whisk together the flour, salt, baking soda, baking powder, and ground cinnamon until well combined.
In another bowl, beat the eggs. Then add the vegetable oil, white sugar, brown sugar, and vanilla extract. Mix until smooth and well blended.
Gently fold the wet ingredients into the dry ingredients, being careful not to overmix; the batter should have a few lumps.
Fold in the grated zucchini until evenly distributed throughout the batter.
Pour the batter into a greased 9x5-inch loaf pan and smooth the top with a spatula.
Bake in the preheated oven for 60 to 70 minutes, or until a toothpick inserted into the center comes out clean.
Remove from oven and let cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.