Inspect DOCX, XLSX, and PPTX package structure for macros, media, embedded objects, custom XML, and size hotspots.
- Runs locally
- Category Developer & DevOps
- Best for Checking file type, size, metadata, and obvious mismatch signals before sharing.
What this tool does
Office Document Inspector reads DOCX, XLSX, and PPTX files as Open XML ZIP packages and produces a local Markdown report. It detects whether the package looks like Word, Excel, PowerPoint, or an unknown Open XML archive; counts worksheets, slides, media files, and themes; flags macro payloads, embedded objects, custom XML, comments, external-links folders, encrypted entries, and risky ZIP paths; and lists the largest internal entries. This is useful before accepting a document from outside, debugging why an office file is huge, checking whether a workbook has embedded media, or reviewing a presentation package before distribution. It does not open macros, extract files, upload content, or guarantee document safety.
Tool details
- Input
- Files + Text + Numbers
- The page exposes text boxes, numeric controls, file pickers, or structured inputs depending on the tool.
- Output
- Live result + Copy + Download
- The result area focuses on usable output, with copy, download, or preview actions when supported.
- Privacy
- Browser-side processing
- The main tool logic does not call an external API, so inputs normally stay in the current tab.
- Save / share
- No account required
- Open the page and use it; whether results survive refresh depends on the tool.
- Performance budget
- Initial JS <= 78 KB
- No WASM budget is declared, keeping the tool quick to open on mobile.
- Best fit
- Developer & DevOps · Operations
- Category and role tags drive related tools, internal links, and quick fit checks.
How to use
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1. Input
Paste or drop your content into the tool panel.
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2. Process
Click the button. All processing is local in your browser.
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3. Copy / Download
Copy the result or download to disk in one click.
How Office Document Inspector fits into your work
Use it before upload, handoff, archive, support review, or any moment where a file needs one local check before it leaves your machine.
File jobs
- Checking file type, size, metadata, and obvious mismatch signals before sharing.
- Preparing mixed folders for upload, archive, intake, or review.
- Keeping sensitive files in the browser instead of sending them to an account-based service.
File checks
- Do not treat the extension alone as proof of the real file type.
- Review metadata before a file goes to customers, vendors, or a public page.
- Keep the original file until the copied, converted, or exported result is verified.
Good next steps
These links move the current task into a more complete workflow.
- 1 ZIP Manifest Inspector Read a ZIP central directory locally and flag traversal paths, encryption, duplicate names, and risky ratios. Open
- 2 PDF Metadata Extractor Upload PDFs and extract document metadata, page-count hints, encryption flags, and producer details locally. Open
- 3 File MIME Type Inspector Upload files and inspect filename, size, browser MIME type, extension, and magic-byte signature locally. Open
Real-world use cases
Triage external documents
Flag macros, embedded objects, custom XML, and unexpected media before opening or forwarding a file.
Explain large Office files
List the largest internal entries to see whether images, slides, or embedded objects are driving file size.
Common pitfalls
Assuming a .docx extension means the file has no macro-related payloads.
Treating a package-structure report as a malware verdict.
Privacy
The Office package is inspected locally. The report can expose filenames inside the document package.
FAQ
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