Create ZIP: deliver a complete set, not merely a compressed file
A simple handoff can stall when the recipient receives two pictures but not the document explaining them. A strong reason to make ZIP is to deliver the intended set as one inspectable bundle, not to promise that every file will shrink.
Start with a list of what must arrive
ZIP can combine several files in one bundle. First list the required items and check their versions, especially when names such as final and final-new coexist.
Remove unnecessary items from the delivery copy, not your original archive. An irrelevant private file inside a neatly organized bundle is still an unintended disclosure.
References: Microsoft — Combining and unpacking ZIP files
Bundling, compression and secrecy are different goals
A bundle of already compressed images or video may offer little space saving. Measure the resulting ZIP rather than promising a reduction percentage you have not checked.
This creation service does not add archive encryption or a password. If confidentiality is a requirement, use an approved delivery channel for that purpose. A .zip filename does not meet the requirement by itself.
Check the names the recipient will receive
ToolRoof gives bundle entries ordered filenames rather than retaining the source names and folder tree unchanged. Do not use it to transfer a project whose internal links depend on those original paths.
Inspect the created ZIP and extract a test copy. When meaning depends on names such as front and back, supply a suitable explanation separately or choose a handoff method that preserves the required names.
Example: two pictures and a notes file
In an invented example, pictures of 1200000 and 800000 bytes plus 20000 bytes of notes total 2020000 source bytes. That is not a prediction of ZIP size: content, compression and overhead affect the result.
Completeness means three files with the right contents. Open the notes and both pictures after extraction. Three filenames are insufficient evidence if two of the pictures accidentally show the same view.