Prepare a large photo for a website by reducing unnecessary pixels first, then comparing compression options and checking the final visual quality.
Match the image to its placement
A camera photograph may contain far more pixels than the space where you intend to display it. Start with the dimensions your layout actually needs. Consider whether the image will be viewed full-screen or only as a small illustration beside text.
Do not choose a tiny width only because it produces a small file. A photo stretched across a wide layout can become visibly soft. Conversely, keeping the camera's full dimensions for a small card can create a heavier download without helping that placement.
Make a proportionate resized copy
Select the photo in Image Resizer, enable Preserve aspect ratio and enter your target width. Check the automatically calculated height. For example, a 4000 by 3000 source reduced to 1200 pixels wide becomes 1200 by 900, keeping the subject's proportions.
Choose an output format that your publishing system accepts. Use PNG when transparent pixels are essential; consider JPEG or WebP for photographs. Download the resized result and keep the original untouched for other uses.
Compare file size after compression
If the resized file is still heavier than desired, open it in Image Compressor. Start with a moderate quality setting, generate a result and compare the displayed original and output sizes. A lower quality value may reduce the number of bytes without changing the resized dimensions.
This is a second encoding step, so inspect the result carefully. If a single resize export already meets your needs, an additional compression pass may be unnecessary. Avoid repeatedly compressing and resaving the same copy just to chase a slightly smaller number.
Review the published placement
Look for blurred edges, damaged text and visible blocks in smooth color areas. Check the photo at its intended display size, then keep the lighter version only if it remains useful. The tool does not test a live website's speed or promise a ranking improvement; it simply helps you prepare the image asset.