📁 Input ZIP Files

0 ZIPs

🔗

Select multiple ZIPs to merge

or click to browse · Safe local concatenation

Output Name: .zip

✅ Merged ZIP

🗜️ Upload ZIPs and click "Merge ZIPs" to combine them

Related Tools

More free Zip & Archive tools

🗜️ Zip & Archive Tools

ZIP Merger —
Free ZIP Merger* Online*

Merge two or more ZIP archives into a single ZIP file for free online. 100% client-side, fast and secure. Files never uploaded.

Combine files and nested structures seamlessly

Zero server uploads — 100% browser processing

Works offline once the page has loaded

Zero limits on ZIP size or archive count

🔗

FreeAlways

BrowserComputed

How It Works

Use ZIP Merger in three steps

Step 1

📂

Upload Sibling ZIPs

Upload the two or more ZIP archive files that you want to join together.

Step 2

⚙️

Configure Output Name

Enter your preferred output ZIP filename and choose DEFLATE compression level.

Step 3

⬇️

Download your result

Click 'Merge ZIPs' and download your combined master archive file instantly.

Why BunchTool

Why use our free ZIP Merger?

🔒

Zero server uploads

Your data is processed entirely inside your browser using client-side JavaScript. Nothing ever travels over a network to any server — making BunchTool the most private option available.

⚡

Instant local processing

Because everything runs locally in your browser, there are no upload queues or server wait times. Results appear in seconds regardless of your internet speed — or even without any connection at all.

🔗

Intelligent File Merging

Merge folders, directories, and files from separate archives into a single unified ZIP, while resolving duplicate filename collisions.

FAQ

Frequently asked questions

Is the ZIP Merger free to use? ▼

Yes — completely free with no file-size limits, no daily usage caps and no premium tier. All 247 tools on BunchTool are free forever, with no upsells or paywalls.

Is my data safe and private? ▼

Absolutely. Your data is processed entirely inside your browser using client-side JavaScript. Nothing ever leaves your device or is uploaded to any server.

Does the ZIP Merger work offline? ▼

Yes. Once this page has loaded in your browser, the tool continues to work without an internet connection. Your browser handles all the processing locally on your device.

What happens if both ZIP files contain a file with the same name? ▼

To prevent accidental overwrites, the tool merges duplicate filenames cleanly by appending a suffix (e.g. 'file_1.txt') to maintain access to both copies inside the final archive.

Is there a limit on the number of ZIPs I can merge? ▼

No, you can combine as many ZIP files as you like in a single execution. All work is computed in your browser sandbox.

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Frequently asked questions

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ZIP Merger —Free ZIP Merger Online

Use ZIP Merger in three steps

Why use our free ZIP Merger?

Frequently asked questions

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Explore 247 more free tools —no login, no limits.

ZIP Merger —
Free ZIP Merger* Online*

Explore 247 more free tools —
no login, no limits.