File Compressor (Zip / Unzip) — Create a zip archive from a list of files, or extract a zip you already have. The zip is built and extracted locally in your browser — your files never leave your device.
Your files never leave your device. The zip is built and extracted locally in your browser.
Was File Compressor (Zip / Unzip) useful?
File Compressor (Zip / Unzip)是什么？
Create a zip archive from a list of files, or extract a zip you already have. The zip is built and extracted locally in your browser — your files never leave your device.
Useful for bundling a few files to send over email, opening a zip you just received, or making a small archive before sharing. The privacy angle is the differentiator: most online zip tools upload your files to a server to do the work. This one does not.
使用方法
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To zip: drop files in the left panel
Add as many as you want. The list updates with each file's size. Click "Compress" to build the zip; the download starts immediately.
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To unzip: drop a .zip in the right panel
The list of contents appears. Click "Download" next to any file, or "Download all" to extract everything as individual files.
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No file-size limit (other than your browser)
Streaming zip — handles a 1 GB file as comfortably as a 1 KB file. The browser may slow down with very large files; use a real desktop tool for anything over a few hundred MB.
示例
Bundle a project for email
Add 10 files (a few KB each) to the left, click Compress, attach the resulting zip to an email.
A folder of small text files: README.md, package.json, src/index.js, src/utils.js, …
结果： A single .zip file with all the original files, compressed.
Open a zip you received
Drop a zip into the right panel. The contents are listed. Click Download next to the ones you need.
A zip you received via email or chat containing photos, documents, or source code.
结果： A list of every file in the zip with its size. Click each to download it, or use "Download all".
常见问题
相关指南
How to Convert SRT to VTT or SUB (and Why You Might Need To)
A practical guide to subtitle formats: the differences between SRT, WebVTT, and MicroDVD SUB, the format compatibility matrix for common players, the timing-shift and FPS-scaling cases that come up when subtitles drift, and how to convert everything in your browser without uploading your file anywhere.
How to Zip and Unzip Files Without Uploading Them
A practical guide to making and opening zip archives in your browser. When the in-browser approach is the right pick, when a desktop tool is better, and how to handle a multi-file batch without sending the files to a third-party server.
How to Merge PDF Files Without Uploading Them Anywhere
Smallpdf, iLovePDF, Adobe Acrobat, and the in-browser alternatives — how they compare on privacy, quality, file-size limits, and price. Plus a free in-browser PDF merger that never uploads your documents.
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Last reviewed: 2026-09-25