Can you compress a zip file

A better solution would be to put all of the files into a zip file, and then attach the zip file to your email. Another advantage of zip files is that they are compressed , which means the total file size is smaller. If you're emailing a zip file to someone or posting it to the Web, it takes less time to upload —and your recipients will also be able to download it more quickly.

You can still zip these types of files, but the file size may not get much smaller. Whether you're using Windows or macOS, you don't need additional software to create and open zip files. That's because the basic zip file features are built into the operating system. In Windows, once you've created a zip file you can then add more files to it by dragging them onto the zip file's icon. Click Install and follow the on-screen instructions.

Nearly all files can be compressed, but some files can only be compressed by a small amount. The icon looks like a stack of books. Select an archive format.

ZIP is the standard compression option and easiest to open on any system. Select Best from the "Compression Method" menu. This method provides the highest compression ratio the smallest size file.

Select a Dictionary Size. The default option will already be selected based on the archive format you selected. The larger the dictionary file, the more compressed the file can be. However, compression and decompression can take a long time and large dictionary sizes require better computer hardware. You can try a size that is 10 times lower than your memory, or stick to the default if that takes too long.

If a file is particularly large, you have the option to split the file into smaller files. Use the drop-down menu below "Split to volumes, size" to select how big you want each split file to be. Click Ok. It's in the lower right corner. This compresses your file. Method 3. Right-click the file s you want to compress. To select more than one file at a time, press and hold the Command key as you click each file. Then, right-click the highlighted files. You can compress most files types on your Mac.

The size of the compressed file will vary depending on the type of file it is—images, text files, and various documents can usually compress to much smaller files than video and audio, for example. Click Compress. This compresses the file into a ZIP file, which also reduces its size. ZIP file extension, which is a globally-used compression format that can be opened on nearly any system without needing special software.

To decompress the file, double-click it. Method 4. Download Avidemux. To compress a large video into a smaller file, you'll need compression software that's specifically for video. Avidemux is a free option that can considerably decrease a video's size, and it's available for Windows, Mac, and Linux. Click the download link for your operating system. Open the downloaded file in your web browser or Downloads folder.

Follow the instructions to complete the installation. Launch Avidemux. You'll find it in the Windows Start menu or your Mac's Applications folder. Compressing a video means sacrificing its quality. You can play around with compression options to figure out the best size-to-quality ratio. Movie files that you've downloaded from online sources may already be compressed.

Further compression can lead to a virtually unwatchable final product, or may not result in significant size changes. It is not possible to decompress a compressed video. You should always save the compressed version as a separate file so that you don't lose the original. Open a video file in Avidemux. Here's how: Click File and select Open. Select a video file on your computer and click ' Open. This format gives you the highest level of compression at the best possible quality. This compresses the audio track of the video to keep its size down.

This is the most widely-compatible video format. Click the Configure button under the "Video Output" section. It's the first option below "Video Output. Select Video Size Two Pass from the drop-down menu. It's in the "Rate Control" section at the bottom.

This option lets you specify the size you want your video to be. The larger the file size, the better the quality. Setting the target size significantly smaller than the original size will result in a drastic decrease in quality.

If you're not sure which size to use, keep the default. Enter the target size for the converted video.

Avidemux will adjust its settings to get as close to your target size as possible, but it may end up slightly over or slightly under the target size. This returns you to the previous screen. Click the disk icon to save and compress the video. It's in the upper-left corner of the app. You'll be asked to name the video before compression begins. Depending on the length of the video and the quality settings, this could take quite some time to complete. Method 5. Understand what can be compressed.

Most audio files that you download from the internet, such as MP3 or AAC files, are already compressed. Further compression of these types of files will typically result in a poor-sounding file, but will decrease the file's size.

Download Audacity. This is a free, open-source audio editing program for Windows, Mac, and Linux. Click the install link for your operating system. Open the downloaded file in your Downloads folder and follow the on-screen instructions to install. Open Audacity. You'll find it in the Windows Start menu if you're using Windows, or the Applications folder if you're using a Mac. Open the audio file you want to compress. Here's how: Click the File menu and select Open. Select an audio file and click Open.

Make the file mono optional. This isn't recommended for music or anything with essential stereo effects, but for spoken voice or other recordings that don't require high-fidelity, switching to mono single-track can make the file significantly smaller. Use the following steps to convert a stereo file to mono: Click the down-arrow next to the file's name in the project area. Locate the zipped folder that you want to unzip extract files or folders from. Do one of the following: To unzip a single file or folder, open the zipped folder, then drag the file or folder from the zipped folder to a new location.

Notes: To add files or folders to a zipped folder you created earlier, drag them to the zipped folder. Need more help? Join the discussion. Was this information helpful? Yes No. Thank you! Any more feedback? The more you tell us the more we can help. Can you help us improve? Resolved my issue.