How do I create a ZIP file online?

Open the Files to ZIP tool, drop in the files you want to bundle, click Create ZIP, then download the archive. It works in any modern browser with no software to install.

What file types can I add to the ZIP?

Any of them. PDFs, Word and Excel documents, images, presentations, videos, audio and plain text can all be added to the same archive.

How much will my files be compressed?

Text-based files such as documents, CSVs and code compress significantly. Already-compressed formats like JPG, PNG, MP4 and PDF stay close to their original size — the benefit there is getting a single tidy download.

Are my files uploaded to a server?

No. Master Merge processes every file directly in your browser using JavaScript. Nothing is uploaded, stored, or transmitted to any server. This is the most private way to handle sensitive documents online.

Is this tool really free?

Yes — 100% free with no signup, no credit card, no email, no watermarks, and no hidden limits. We do not run ads or sell data. Use it as much as you want.

Files to ZIP

Upload any documents, images, or files and download them all as a single ZIP archive.

Drop any files here

PDF, Word, Excel, images, video, code — anything

Max 100MB per file · Up to 20 files

Bundle any set of files into one compressed ZIP archive, right in your browser. Everything is packed locally with JavaScript — your documents, photos and folders never touch a server. Perfect for emailing multiple attachments, archiving a project, or handing over a batch of deliverables in a single download.

How it works

Upload

Drag & drop or browse your files

Process

Files are processed in your browser

Download

Get your merged/converted file instantly

About Files to ZIP

Master Merge's Files to ZIP tool bundles any collection of files into a single compressed .zip archive. Documents, images, spreadsheets, presentations, audio, video or code — if it lives on your device, it can go in the archive.

Compression happens entirely inside your browser using JavaScript. Nothing is uploaded, queued or stored on a server, which makes this a safe way to package confidential contracts, client deliverables or personal photos.

Add files in any order, drag to rearrange them, and download one tidy archive. Duplicate filenames are renamed automatically so no file silently overwrites another.

Why use Master Merge for files to zip

Accepts every file type — no format restrictions
One download instead of dozens of attachments
DEFLATE compression shrinks documents and text files
No upload — files never leave your device
Free with no signup and no watermarks

Common use cases

Email several attachments as one file
Package project deliverables for a client
Archive a folder of photos before backing it up
Bundle invoices or receipts for accounting