Compress File | Leapwork Docs

The Compress File block generates a ZIP archive from one or more input files during the execution of a flow. This is especially useful when you need to pass multiple files to downstream blocks (for example Send email or Web File Upload) as a single attachment.

When fully expanded, the following is an example of the Compress File block:

Note: The screenshot on this page uses the Elegance Design, introduced in 2025.3. If you are using an earlier version, your layout may look different.

Quick-start

Drag Compress File onto the canvas.
Add one or more files in Files (either by using Add File or by connecting file outputs from earlier blocks).
Run the flow when it’s ready and connect Zip File to the next block that should use the compressed file.

Building block parameters

Parameters

Block header: Shows the current name of the Compress File block. You can rename it by double-clicking the header and typing a new title to keep flows readable and organized.
Files: Defines the list of files that will be compressed into a single ZIP archive.
- Click Add File to select one or more files.
- Files can also be provided dynamically from other blocks via the input connector.
  All selected files are packaged together when the block executes.
Zip File: Contains the resulting ZIP archive created by the block.
- Use the output connector to pass this ZIP file directly to other blocks, such as Send email, Web File Upload, or Save file, as part of a larger workflow.
Failed: Triggers if compression cannot be completed. Typical reasons include:
- No input files were provided.
- The input files exceed the 500 MB size limit.
- An internal error occurred during compression.
  Use this connector to branch the flow for error handling, logging, or retry logic.

Resources

Topic	Description
Flows FAQ	Common questions about creating, running, and managing flows in Leapwork.
Flows Troubleshooting	Guidelines and solutions for identifying and fixing issues that occur when building or running flows in Leapwork.