How does image resizing work?

Image resizing means changing the width and height of an image in pixels. A website, a marketplace listing, an email attachment or a form upload often requires a specific pixel limit; using a 4000-pixel-wide photo as is slows the page down and takes up unnecessary space.

In GörselKüçült, image resizing is done on the same screen as compression: enter the long-edge limit and the image is shrunk while keeping its aspect ratio; if you want, you can also adjust the quality and make the file even lighter.

Aspect-ratio preservation: why is the image not stretched?

The long-edge limit is the pixel value that the longest edge of the image must not exceed. The tool applies this value as a scale: in a 4000 × 3000 pixel photo, if the limit is 1600, the output becomes 1600 × 1200. Since the width and height are reduced at the same rate, the image is not stretched and circles stay circles.

No cropping is done; the framing is kept as is. If you only want to cut out a specific area, you need a separate cropping tool.

What pixel value should the long-edge limit be?

The right value depends on how many pixels wide the image will be displayed on the site. For retina screens, 1.5-2 times the display width is usually enough.

The tool does not enlarge the image: if the limit is larger than the current long edge, the file stays as is. The upper limit for the value is 6000 pixels.

• Hero images: 1600-1920 pixels.
• In-content photos: 800-1200 pixels.
• Cards and small images: 400-600 pixels.
• Marketplace product photo: 1000-1500 pixels.
• Email images: 600 pixels.

Image resizing step by step

The flow is the same for a single image and for bulk work:

• Upload your images; JPG, PNG and WebP are accepted, and the limit is 100 MB per file.
• Enter the long-edge limit; if you leave it empty, only compression is applied.
• Set the quality; the default 82 is balanced for most photos.
• Choose the output format if needed; the same format can be kept, or the image can be converted to WebP, JPG or PNG.
• Start the process; the result card shows the new pixel dimensions, and you can take each file on its own or in one ZIP.

Resizing and compression together

Lowering only the quality shrinks the file to a point; the real gain comes from reducing the pixel count. Bringing a 4000-pixel-wide photo down to 1600 pixels cuts the file size several times over, even when the quality is kept high.

Using the two together gives the best balance: the long-edge limit drops unnecessary resolution and the quality setting encodes the remaining data efficiently. The original/new size and the saving rate on the result cards show which setting works.

For example, a 4 MB product photo brought down to a 1600-pixel limit and quality 82 typically drops to a few hundred kilobytes; that is a gain you cannot reach by lowering the quality alone.

Common mistakes

• Trying to enlarge a small image: the tool does not enlarge, because upscaling does not add details that are not there.
• Converting text and screenshots to JPEG: the edges soften; PNG or WebP is cleaner.
• Forgetting retina screens and choosing too low a limit: the image looks blurry on screen.
• Overwriting the original file: the resized output is a working copy, and the original file should be kept.
• Expecting cropping: this tool keeps the aspect ratio and does not cut the framing.
• Processing the same image with different settings for each platform and creating confusion in your archive: adding a size label to the file name keeps things organized.

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