FILE TOOL // 048

File Type Distribution Analyzer

See which file types dominate a folder by file count and storage size, with separate extension and MIME summaries.

Processed locally in your browser

Choose a folder

Files and relative paths

Drop files here Choose or drop a folder. The browser supplies its files and relative paths for local aggregation.

FileSizeType

No files selected.

Group by Sort by Top groups Report format

Merge extension case

Choose files to begin.0 files

How to use File Type Distribution Analyzer

Choose or drop a folder. The browser supplies its files and relative paths for local aggregation.
Adjust the options for the report you need.
Select “Analyze Distribution,” review the result, and download the generated file.

What this file tool does

See which file types dominate a folder by file count and storage size, with separate extension and MIME summaries.

Files are grouped by normalized extension or top-level MIME family, then counted and summed by exact file size.

Processing stays on this device. Browsers do not expose hidden operating-system metadata. Folder selection includes only files made available by the browser.

Supported inputs and limits

Browsers do not expose hidden operating-system metadata. Folder selection includes only files made available by the browser.

Input	Folder FileList with relative paths
Grouping	Extension or MIME family
Measures	File count and total bytes
Output	JSON or CSV

Example and practical tips

Practical example

Analyze a project folder to learn whether video, image, archive, or source files account for most of its storage.

Tips

Sort by bytes to find storage-heavy formats.
Sort by count to reveal many small files.
An unknown MIME type can still be grouped reliably by extension.

Frequently asked questions

How do I see file type distribution in a folder?

Choose the folder, select extension or MIME grouping, and run the local analysis.

Are file types measured by count or storage size?

Both are calculated; you can choose which measure controls the ranking.

Why are some MIME types unknown?

Browser MIME labels depend on the file extension and operating environment and may be empty.

Does the analyzer include subfolders?

Yes. A folder selection normally includes files from its descendant folders with relative paths.

Are my folder files uploaded?

No. The browser provides local file metadata and bytes are not sent to a server by this page.

Related file tools

Folder Tree Generator Empty Folder Finder Folder Size Analyzer Largest Files Finder

File Type Distribution Analyzer details

Tool number	048
Category	Folder & Storage Analysis
Processing	Local browser operation
Download	Generated report or verification bundle

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