If you only need a few specific items, download them one by one. This avoids the compression process entirely.
You can use the "Virtual Files" feature to selectively sync only the massive folder you need, and then safely un-sync it afterward to save local space. 2. Connect Using WebDAV
However, few plugins expose this option. You may need to modify the plugin’s core code.
You can adjust the global upload limit for all cPanel users through WHM: total size of requested files is too large for ziponthefly
The error is not a bug—it is a protective mechanism. It tells you that your server’s real-time compression resources are insufficient for the current request. While you can increase memory and time limits temporarily, the robust, professional solution is to abandon ZipOnTheFly for large downloads in favor of pre-generated ZIP files or direct cloud-based delivery.
Even when memory and execution limits are generous, the streaming process itself can introduce issues. When a ZIP archive is generated on the fly, the server must open a stream to the client and keep it alive for the duration of the download. If the connection speed is slow or the files are exceptionally large, the stream can . A practical example was documented where a large file took more than 60 seconds to transmit, causing subsequent files to be queued on an expired TCP connection. The underlying library then attempted to read from a dead stream, mistakenly believed the file was complete, and threw an FileSizeIncorrectException .
You are trying to download a large batch of files from a cloud platform, Content Management System (CMS), or enterprise server. Instead of a neat ZIP archive, you get an error message: If you only need a few specific items,
The "Total Size of Requested Files is Too Large for ZipOnTheFly" error is a protection mechanism designed to stop your server from crashing due to high memory usage. While it is annoying, it is manageable by increasing server resources, breaking up downloads, or using FTP to directly access your files.
| User type | Action | |-----------|--------| | | Download fewer files at once. Contact site admin. | | Site owner (non-technical) | Ask hosting support to increase PHP limits. Or switch to a plugin that pre-generates ZIPs. | | Developer | Replace ZipOnTheFly with ZipStream-PHP, pre-generated cron ZIPs, or cloud signed URLs. | | Agency / enterprise | Implement a dedicated download server (e.g., using Nginx’s X-Accel or Apache’s X-SendFile ) for large static ZIPs. |
Note: The values are calculated in bytes. In the example above, 10737418240 bytes corresponds exactly to . If you want to increase it to 20 GB, use 21474836480 . You can adjust the global upload limit for
Fortunately, there are several solutions to overcome the "Total size of requested files is too large for ZipOnTheFly" error:
It indicates that the total combined size of the files selected for compression exceeds the server's configured or default processing capacity for on-demand, streaming compression.
The following solutions require to the server (WHM access) and are therefore not applicable to standard shared hosting accounts. These are intended for system administrators.
