Local file compression and extraction tool running in the browser

Local File Compression and Extraction with a Fast Default

Compress and extract files locally in the browser, keep ZIP as the large-file default, switch to 7Z when needed, and review ZIP / 7Z contents before export.

Kithub Pro site navigation

Local-firstZIP / 7Z

Loading the local archive engine…

Automatic flow

Drop files or a folder here

Runs fully in your browser. ZIP is the default output, and you can switch to 7Z or maximum mode.

Local-firstZIP

Output format

Compression strategy

Compression result

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Progress, result size, and download actions will appear here.

Original

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Output

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Change

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The result archive will appear here after compression finishes, and you can decide whether to download it.

Output file

Generated after files are added

No files added yet.

Input

Local lossless file compression

No files added yet.

Compression result

--

Progress, result size, and download actions will appear here.

Original

--

--

Output

--

--

Change

--

--

The result archive will appear here after compression finishes, and you can decide whether to download it.

Output file

Generated after files are added

No files added yet.

Input

Local lossless file compression

No files added yet.

Local file compression and extraction

An online file compressor and extractor for everyday archive work

This browser-based tool lets you pack files or folders into ZIP or 7Z, and inspect or extract ZIP and 7Z archives without sending your files to a remote server. It is built for delivery bundles, project archives, shared assets, and everyday document exports.

01

Pack, inspect, and extract in one workspace

Move from loose files to a clean ZIP or 7Z archive, or from an uploaded archive to a safe export flow, without leaving the same screen.

02

Browser-local processing with no server upload

Compression, extraction, and archive reading stay on the current device, which makes the tool more comfortable for contracts, codebases, internal docs, and other sensitive files.

03

Read the file list before export

After you upload a ZIP or 7Z, the browser reads the file list first so you can choose what to export or download.

Kithub Pro site navigation

A file workspace with a clean path back into image work.

If your flow starts with image cleanup before archive delivery, or you want to return to the full tool hub, you can switch from here in one step.

Main hub

Return to the Kithub Pro home site

The home site groups the image tool, file tool, and future utilities into one clearer entry point so the product family feels connected.

kithub.proOpen kithub.pro

Related tool

Need JPG / PNG / WebP compression? Move to the image tool

If your workflow starts with screenshots, product photos, or article visuals before archive delivery, continue in img.kithub.pro for local image compression and conversion.

img.kithub.proOpen img.kithub.pro

FAQ

FAQ

These are the questions most people ask before using an online file compressor and extractor.

Are my files uploaded to a server?+

No. The page is delivered by the site, but archive creation and extraction stay in the current browser, so file contents are not sent to a remote processing server.

Which archive formats are supported right now?+

You can create ZIP or 7Z archives from files or folders, and inspect or extract ZIP and 7Z archives locally. RAR creation is still out of scope for now.

Why does the app read the archive before export?+

This lets you see the file list first and decide what to export. If some entries cannot be exported directly, the page will show that in the list.

Can I extract directly into a folder?+

Yes, in browsers that support the File System Access API. Otherwise you can still download exportable files individually.

How should I choose between ZIP and 7Z?+

Choose ZIP when compatibility, speed, and large-file handling matter most. Choose 7Z when compression ratio matters more and the archive size is still reasonable for in-browser processing.

Why do some files barely shrink after compression?+

Many formats such as JPG, MP4, PDF, DOCX, and existing ZIP files are already heavily compressed. In a fully lossless archive flow they often stay close to the original size, and archive container overhead can even add a small increase.