FILE TOOL // 73

File Chunk Viewer

Inspect a precise byte range as hexadecimal, text, or a downloadable binary chunk.

Processed locally in your browser

Select one file

Local input

Drop files hereChoose one file. File names, sizes, types, and modification dates stay in this browser session.

FileSizeType

No files selected.

Start offsetLengthbytes>Preview mode

Choose files to begin.0 files

How to use File Chunk Viewer

Select the requested local file or folder.
Review the tool-specific options.
Run the tool and inspect the result summary.
Download the newly created result or report.

What this file tool does

This viewer slices the selected file at exact byte offsets and creates a real binary extract plus a readable preview.

The result is calculated from actual file bytes or metadata supplied by your browser.

Processing is local. Browser memory, file permissions, format variants, and device performance can limit very large jobs.

Supported inputs and limits

This tool accepts one file. Unsupported structures are reported rather than guessed.

Environment	Modern desktop browser
Privacy	No upload
Output	New file or auditable report

Example and practical tips

Start with a small representative set so you can confirm the options and output format. Keep the source files until the downloaded result has been tested in its intended workflow.

For backup or integrity work, store the report beside the corresponding version so later checks remain understandable.

Frequently asked questions

How do I view bytes at a specific file offset?

Enter a zero-based start offset and length, then run the viewer.

What happens if the range passes the end of the file?

The range is clipped at the file boundary and the actual extracted length is reported.

Can I download the selected byte range?

Yes. Download Result saves the exact selected bytes as a binary file.

Does text preview decode every binary file correctly?

No. Text mode uses UTF-8 with replacement characters for invalid sequences.

How large can the preview be?

The interface limits each requested chunk to 1 MiB to keep the preview responsive.

Related file tools

Byte Range File Extractor File Hex Viewer File Header Inspector Null Byte Scanner

Processing details

Tool number	73
Category	File Inspection & Analysis
Execution	Browser local