Question 1

What are the maximum file size and number of JPGs I can compress into one ZIP?

Accepted Answer

The maximum file size you can upload for JPG compression is typically 100 MB per image, and the total ZIP size should not exceed 500 MB. If your files surpass these limits, consider splitting them into smaller batches before uploading.
For the number of JPGs per ZIP, you can usually include up to 200 images as long as the combined size stays within the total limit. Very large batches may take longer to process and download.
If you encounter an error or timeout, try reducing the ZIP size, lowering the image count, or compressing in multiple smaller ZIPs. This helps ensure smooth uploading, processing, and downloading.

Question 2

Will zipping JPGs reduce their image quality or only their file size?

Accepted Answer

Zipping JPG files does not reduce image quality. A ZIP archive is a lossless container: it compresses the file data without altering the original pixels, so when you extract the JPG, it’s identical to the source.
However, because JPG already uses lossy compression, additional ZIP compression usually yields only a small file-size reduction—often negligible. To significantly shrink size, you’d need to re-encode the JPG with higher compression (which can reduce quality) or convert to a more efficient format.

Question 3

How can I maintain the original file names and folder structure inside the ZIP?

Accepted Answer

To keep the original file names and folder structure inside the ZIP, upload your files by selecting the parent folder (not individual files) so the hierarchy is preserved, avoid renaming during upload, and ensure your ZIP tool is set to include relative paths (options like “Preserve directory structure” or “Store full paths”); when downloading, make sure your browser or OS doesn’t auto-flatten directories, and if needed, re-zip locally by right-clicking the top-level folder and choosing “Compress/Zip” so the nested folders and file names remain intact.

Question 4

Is my data secure and are files deleted after the ZIP is created?

Accepted Answer

Yes—your data is secure. All uploads are transmitted over encrypted HTTPS, processed automatically, and never shared. We only access files to perform the conversion and ZIP creation. To protect your privacy, files and generated ZIPs are automatically deleted from our servers shortly after processing completes or within a limited time window for download, whichever comes first. You can also clear them sooner by closing the session or deleting the download link. We do not use your files for training, analytics, or any other purpose.

Question 5

Can I password-protect or encrypt the resulting ZIP file?

Accepted Answer

Yes—most ZIP tools let you add a password or apply encryption when creating the archive. When saving your files as a ZIP, choose options like “Encrypt,” “Password-protect,” or select AES-256 if available for stronger security.
If your current tool doesn’t offer this, you can protect the ZIP afterward using utilities such as 7-Zip, WinZip, or the macOS/Windows command line. Keep the password safe; without it, the encrypted ZIP contents cannot be recovered.

Question 6

What is the difference between a JPG file and a ZIP file?

Accepted Answer

A JPG file is a single image format that uses lossy compression to reduce size while maintaining acceptable visual quality. It’s meant for photos and graphics you can view directly in image viewers, browsers, and editors, and typically has the extension .jpg or .jpeg.
A ZIP file is a compressed archive that can bundle one or many files and folders—of any type—into a single container with the extension .zip. It’s used for storage and transfer efficiency, requires extraction to access contents, and does not display images by itself.

Question 7

Why did my ZIP fail to download or appear corrupted and how can I fix it?

Accepted Answer

This usually happens due to an interrupted or incomplete download, aggressive browser caching, or security tools scanning the file. It can also occur if the ZIP was created while files were still uploading, the network dropped mid-transfer, or your device ran out of space. Symptoms include a ZIP that won’t open, reports as “corrupted,” or shows “unexpected end of archive.”
To fix it: clear your browser’s cache and re-download, try a different browser or network, disable VPN/proxy temporarily, and ensure you have enough disk space. If possible, download with a download manager or use the site’s “rebuild/regenerate ZIP” option, then verify the file size matches what’s expected. Finally, extract with a robust tool (e.g., 7-Zip/WinRAR/Archive Utility) and, if the issue persists, try downloading the files individually instead of a single ZIP.

Question 8

Does the ZIP preserve EXIF metadata and timestamps from the original JPGs?

Accepted Answer

Yes. When we bundle your JPG files, the ZIP preserves each image’s EXIF metadata—including camera settings, orientation, geotags (if present), and embedded color profiles—exactly as they exist in the originals.
The ZIP also keeps each file’s timestamps (created/modified dates) intact at the file level inside the archive. This means that when you extract the ZIP, your operating system will see the same file dates for those images.
Note: If you later edit or resave the images outside the ZIP, some apps may strip EXIF or change timestamps. But the ZIP we provide does not alter them, and extraction with standard tools will retain the originals.

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