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How do I compress a picture?

Published in Image Compression 2 mins read

You can compress a picture by using image editing software to reduce its file size, typically by changing the file type or adjusting compression settings.

Here's a breakdown of common methods:

  • Using Image Editing Software (e.g., Lightroom, Photoshop, GIMP):

    • Saving as a Different File Type: Converting an image to a format like JPG often significantly reduces its size compared to formats like TIFF or RAW, since JPG uses lossy compression.

    • Adjusting Compression Settings: When saving as a JPG, you can typically control the level of compression. Higher compression results in smaller file sizes but can also decrease image quality. Find a balance that suits your needs.

  • Online Image Compression Tools: Numerous websites offer free image compression services. Simply upload your image, and they will compress it for you. Examples include TinyPNG, Compressor.io, and iLoveIMG. These are usually a good option if you don't have image editing software available, or need to quickly compress multiple images.

  • Built-in Operating System Tools:

    • Windows: You can use the "Paint" application to resize and save images in different formats.
    • macOS: The "Preview" application allows you to adjust image quality and file size when saving.
  • Specific File Types and Compression:

    • JPG (JPEG): Best for photos and images with many colors. Uses lossy compression, which means some image data is discarded to reduce file size.
    • PNG: Better for images with sharp lines, text, and graphics. Supports lossless compression (meaning no data is lost), and transparency. Can still be compressed.
    • GIF: Suitable for simple animations and images with few colors. Uses lossless compression.

Here's a simple workflow for compressing a picture:

  1. Open your image in image editing software or an online compression tool.
  2. Choose your desired file format (JPG is often a good choice for photos).
  3. Adjust the compression settings (if applicable). Experiment to find a balance between file size and image quality.
  4. Save the compressed image.

By using these methods, you can effectively compress your pictures to make them easier to share, store, and upload.

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