Photos must be optimized to be published on the Internet. Otherwise, they will weigh too much and many people may have problems downloading and viewing them. So that the photo does not lose clarity and quality when reduced, you need to know some rules for optimizing and compressing images for Internet publications.
Instructions
Step 1
Do not convert or save photos to JPEG - this format does not provide enough compression, and you can get a small photo of low quality and large size. Convert the original photo to TIFF or PSD if your camera shoots in RAW. If you have a simple camera that shoots immediately in JPEG, save all photos in TIFF or PSD format.
Step 2
Open the photo in Photoshop and carry out retouching and color correction, correct the white balance, and if necessary, adjust the brightness and contrast, eliminate noise defects. Having prepared the photo for reduction, save the original in a separate folder and start working with the copy.
Step 3
First, open the Image menu and in the Image Size section, set the photo size you need. Find the Pixel Dimensions block in this section and if your photo is horizontal, set the width to 800 pixels, and for vertical frames, set the height to 800 pixels. Make sure the photo is scaled to 100% and open the Filter menu.
Step 4
Select the Sharpen> Smart Sharpen section and apply the filter to the photo by setting the following parameters in its settings: Amount: 300, Radius: 0.2 or Amount: 100, Radius: 0.3. Watch the changes in the photo in the preview window. Once you're satisfied with the result, save the image.
Step 5
There is a more sophisticated method for reducing a photo without losing quality, in which you need to start processing the photo by converting it to Lab. To do this, open the Image menu and select the Mode> Lab Color option.
Step 6
After that, open the Image Size section and in the Pixel Dimensions block set the width of the horizontal photo to 3200 pixels, and for the vertical photo to the height of 2400 pixels. Scale the image down to 50% and select Lightness in the Channels palette.
Step 7
After that, open the filter menu and select Sharpen> Unsharp Mask with the following parameters: Amount: 150-300, Radius: 0.8-2, 0, Threshold: 15-30. Check for increased image noise. Open the Image Size section again and set the width value to 50%, then return to the actual scale of the photo and select the Lightness channel in the channels palette, as in the previous case.
Step 8
Open the filter menu and re-select the Unsharp Mask parameter, setting all values to 50% of the previous values. Apply a Blur filter to channel A, then apply the same filter to channel B. Then go to the Image menu and choose Mode> RGB Color. After converting the photo back to RGB, save it.
