UtilityKit

500+ fast, free tools. Most run in your browser only; Image & PDF tools upload files to the backend when you run them.

ZIP Creator

Bundle multiple files into a .zip archive in your browser

About ZIP Creator

ZIP Creator on UtilityKit bundles a stack of files into a single .zip archive without ever leaving your browser. Drop or pick any combination of documents, images, source files, or assets, choose a compression level (Store, Low, Default, or Maximum), name the output, and click one button to get a downloaded .zip. JSZip handles the compression locally, so your files never reach a server. The tool combines up to 200 MB total per session, deduplicates duplicate filenames automatically (file.txt → file (1).txt), and shows progress as the archive is built. A live file list lets you remove individual entries before zipping. Whether you're packaging a screenshot bundle for a bug report or archiving project files for handoff, ZIP Creator delivers a standard .zip that opens in every operating system.

Why use ZIP Creator

Browser-Only: JSZip compresses files entirely in your browser — no upload, no server, no third-party hop.
Compression Choice: Pick Store for instant zipping or Maximum for the smallest possible output, plus two middle levels.
Auto-Dedupe: Duplicate filenames are renamed automatically so adding two files called report.pdf does not overwrite one with the other.
Live Progress: A percentage indicator shows progress while the archive is built, useful on slower devices or large bundles.
Per-File Removal: Drop the wrong file? Click × next to its name and rebuild without re-selecting everything.
Free & Unlimited: No signup, no email, no watermark, no daily cap.

How to use ZIP Creator

Drop one or more files onto the dropzone, or click to pick a batch.
Review the file list — each entry shows its name and size, and you can remove any file with the × button.
Choose a compression level: Store (no compression, fastest), Low, Default, or Maximum (slowest, smallest output).
Type an archive name (the .zip extension is added automatically if missing).
Click Create & download ZIP — JSZip builds the archive in your browser and a download starts.
Drop more files at any time to start a fresh archive, or click Clear to reset the list.

When to use ZIP Creator

When packaging multiple screenshots or attachments for a bug report or support ticket.
When sending a batch of files to someone who only accepts a single attachment.
When preparing a release bundle of source files, configs, and assets for handoff.
When archiving a folder of related downloads into one tidy .zip for backup.
When consolidating logs, configs, or evidence into a single zip you can attach to an email.
When you don't have a desktop archiver installed and need a one-off zip on a Chromebook or restricted machine.

Examples

Bundle screenshots for a bug report

Input: step-1.png, step-2.png, error-log.txt (12 MB total)

Output: bug-report.zip (3.1 MB at Default compression) — single attachment ready to email.

Archive a project handoff

Input: design.fig, README.md, brand-guide.pdf, palette.css

Output: handoff-2026-05.zip — single tidy archive for the next person to download.

Tips

Use Store (no compression) for already-compressed inputs like JPGs, MP4s, or PDFs — extra compression saves almost nothing and adds time.
Default level 6 is the sweet spot for most mixed payloads (text + binaries) and is what zip and Finder use by default.
If you need to ship a bundle that opens in older systems, name it with no spaces and stick to ASCII characters.
For password protection, build the .zip here, then re-encrypt with 7-Zip on your desktop — it's a quick second step.
Need to extract a .zip instead? Use the ZIP Extractor tool to go the other way.

Frequently Asked Questions

Are my files uploaded anywhere?▾

No. ZIP Creator uses JSZip locally; files are read with the File API, compressed in browser memory, and the resulting blob downloads to your device. Nothing leaves your machine.

What is the total size limit?▾

Combined input is capped at 200 MB per session. Browser memory is the practical bottleneck — building a very large archive on a low-RAM device may slow down or fail.

What compression levels are available?▾

Four options: Store (no compression, fastest), Low, Default (level 6, recommended balance), and Maximum (level 9, smallest output but slowest).

Does the .zip work with WinRAR, 7-Zip, or built-in OS unzip tools?▾

Yes. The tool produces a standard DEFLATE-compressed ZIP that opens in every modern unarchiver including Windows Explorer, macOS Finder, WinRAR, 7-Zip, and Linux unzip.

Can I add a password?▾

Not currently. ZIP encryption requires features outside JSZip's standard scope. For password-protected archives, use a desktop tool like 7-Zip.

What happens if two files have the same name?▾

The tool detects collisions automatically and renames duplicates with a counter suffix — for example, report.pdf and report (1).pdf — so nothing is overwritten.

Does it preserve folder structure?▾

Files are added to the root of the archive by default. To preserve folders, drag the parent folder so the browser provides relative paths, supported in Chrome, Edge, and Firefox.

Is it free?▾

Yes — completely free with no signup, no email, no ads, and no usage cap.

Explore the category

Glossary

DEFLATE: The compression algorithm used by ZIP and gzip. Combines LZ77 with Huffman coding to achieve good compression ratios on text and uncompressed binaries.
Compression level: A 0–9 dial trading speed for size. Level 0 (Store) does no compression; level 9 squeezes the smallest output at the cost of CPU time.
ZIP archive: A single file containing one or more compressed entries plus a metadata index. Standard since 1989 and supported on every modern operating system.