Come si fa a trasformare una foto in formato JPG?

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To select the desired image and press the "OK" button, follow these steps:

  1. Access the "File" menu.
  2. Press the button next to the "Save As" option.
  3. A list of photo formats, including JPEG, will be displayed.
  4. Choose the "JPEG" option.

The Meaning of JPEG


The acronym JPEG stands for Joint Photographic Experts Group. It is a committee of ISO/CCITT experts that defined the first international standard for continuous-tone digital image compression, both in grayscale and color.

Converting a Photo from PDF to JPG using Acrobat

To convert a photo from a PDF to a JPG using Acrobat, follow these steps:

  1. Use Acrobat to open the PDF file.
  2. Click on the "Export PDF" tool in the right panel.
  3. Select the image export format and choose JPEG.
  4. Click on "Export."
  5. Click on "Save" to save the file.

Difference between JPG and JPEG Formats

The formats JPG and JPEG are actually the same. The only difference is the number of characters used in the extension. The JPG format exists because previous versions of Windows (MS-DOS 8.3 and FAT-16 file system) required a three-letter extension for file names.

Difference between JPG and PNG Formats

PNG, which stands for Portable Network Graphics, is a lossless file format created to replace the Graphics Interchange Format (GIF). PNG uses LZW compression, the same as GIF and TIFF formats, unlike JPEG, which is based on DCT compression.

When to Use PNG Format

The PNG file format is suitable for:

  • High-quality web images with effects like gradients and transparencies (such as logos)
  • Images to be processed using relevant editing programs
  • Complex images taken by professional cameras

Uses of PNG Format

Portable Network Graphics (PNG) is a file format used in computer tools to store images. A derivative format, Multiple-image Network Graphics (MNG), developed in 2001, resembles animated GIFs.

Images with Transparent Background

The PNG file format allows compressing images losslessly, meaning without losing information. Transparency and opacity are possible with this format.

Removing the Background from a PNG Image

To remove the background from a PNG image using Apowersoft Background Eraser:

  1. Download and install the application on your Android or iOS device.
  2. Open the application and click on the "Remove Background" button.
  3. The application will automatically remove the PNG background.
  4. Click on the "Save in HD" button to download your photo.

When to Use PNG Format

Therefore, the PNG file format is suitable for:

  • High-quality web images with effects like gradients and transparencies (such as logos)
  • Images that can be processed using editing programs and specific apps
  • Complex images taken by high-quality cameras

Converting JPG to Transparent PNG

To convert a JPG to a transparent PNG, follow these steps:

  1. Double-click on the image to go to the Image Tools tab.
  2. Choose Format > Color.
  3. Click on "Set Transparent Color" when the pointer changes, and select the color to make transparent.

Photographs without Background

The PNG file format, known as a raster graphics format, can compress images without losing information. This format allows for opacity and transparency.

Making a White Background Transparent

To create a transparent area in an image:

  1. Choose the image to use for creating transparent areas.
  2. Click on Image Tools, then click on Recolor and choose a transparent color.
  3. Click on the color in the image to make it transparent.

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