# Zip Builder

Bundle several files into a zip archive in the browser, with a choice of compression level.

- Category: Web (web)
- URL: https://ilham.dev/tools/zip-builder/
- Documentation: https://ilham.dev/tools/zip-builder/index.md
- Keywords: zip, archive, compress, bundle, files, download, package, store, deflate

## Example questions

- Why do two files with the same name both survive?
- Which compression level should I use?
- Is there a size limit?

## Properties

- Runs in the browser
- No login required
- No data uploaded


## About

Pick a handful of files and get one zip back, without installing anything. The archive is assembled in the page from the bytes already on your disk, so nothing is uploaded, and a compression level lets you trade a little time for a smaller download.


## Questions

### Why do two files with the same name both survive?

A zip cannot hold two entries under one name, so the second becomes name-1, then name-2 and so on. That keeps both files instead of quietly losing one.

### Which compression level should I use?

The balanced level suits almost everything. Store only is quicker and is the right choice for files that are already compressed, such as a JPEG or another zip, where no level can help.

### Is there a size limit?

Only what your device's memory allows, since the archive is built in the page. A few hundred megabytes of photographs is fine on a desktop and heavy on a phone.