From Word to PDF: The Ultimate Guide to Comprehensive File Metadata Checking

📌 Introduction

In our daily work, we frequently use various file formats such as Word, Excel, PowerPoint, and PDF. Each file format may contain different types of metadata that could expose our personal privacy or business secrets. This article provides you with the ultimate guide to comprehensively checking metadata across different file formats.

📌 Metadata Checking for Word Documents (.docx)

Word documents are one of the most commonly used document formats, containing rich metadata information:

1. Basic Metadata

- Author, modifier, creation time, modification time - Software version, operating system information - Document title, subject, keywords - Document statistics (word count, page count, paragraph count, etc.)

2. Hidden Metadata

- Comments and revision tracking - Document template information - Custom properties - Personal information (such as username, company name, etc.)

3. Nested Attachment Metadata

- EXIF information from images in documents - Metadata from embedded files - Data source information from charts

📌 Checking Method

Use Metadata Online's recursive scanning feature to comprehensively check all metadata in Word documents, including metadata from nested attachments.

📌 Metadata Checking for Excel Spreadsheets (.xlsx)

Excel spreadsheets contain extensive data-related metadata:

1. Basic Metadata

- Author, modifier, creation time, modification time - Software version, operating system information - Workbook name, number of worksheets

2. Data-Related Metadata

- Calculation formulas, function information - Data validation rules - Conditional formatting settings - Pivot table information

3. Hidden Metadata

- Hidden worksheets - Named ranges - Macro code (if present) - External data connection information

📌 Checking Method

Metadata Online supports metadata checking for Excel spreadsheets, helping you discover all data-related sensitive information.

📌 Metadata Checking for PowerPoint Presentations (.pptx)

PowerPoint presentations contain presentation-related metadata:

1. Basic Metadata

- Author, modifier, creation time, modification time - Software version, operating system information - Presentation title, subject

2. Presentation-Related Metadata

- Slide count, layout information - Presenter notes - Slide transition effects, animation settings - Slide show settings

3. Media Metadata

- EXIF information from images - Metadata from audio and video files - Data source information from charts

📌 Checking Method

Use Metadata Online to check all metadata in PowerPoint presentations, including presenter notes and media file metadata.

📌 Metadata Checking for PDF Files

PDF is a commonly used cross-platform file format containing the following metadata:

1. Basic Metadata

- Author, creator, title, subject - Creation time, modification time - PDF version, page count

2. Document Structure Metadata

- Bookmark information - Comments and annotations - Form field information - Digital signature information

3. Embedded Content Metadata

- Embedded font information - Metadata from embedded files - EXIF information from images

📌 Checking Method

Metadata Online supports recursive scanning of PDF files, discovering metadata from all embedded content.

📌 Metadata Checking for Image Files

Image files contain rich EXIF information:

1. Camera Parameters

- Camera model, lens model - Aperture, shutter speed, ISO - Focal length, exposure compensation

2. GPS Information

- Latitude and longitude of shooting location - Altitude - Shooting direction

3. Other Information

- Shooting time - Image resolution, dimensions - Image processing software information

📌 Checking Method

Metadata Online supports EXIF information checking for multiple image formats, helping you discover hidden location information and device information in images.

📌 How to Use Metadata Online for Comprehensive Metadata Checking

1. Visit https://metadata-online.com

2. Click "Metadata Viewer"

3. Upload the file you want to check (supports Word, Excel, PowerPoint, PDF, images, and more)

4. Wait for the system to complete recursive scanning

5. Review scan results and pay attention to high-risk marked metadata

📌 Conclusion

Different file formats contain different types of metadata, and comprehensively checking this metadata is an important step in protecting privacy and security. Metadata Online, as a professional metadata checking tool, helps you comprehensively discover all metadata in files, including metadata from nested attachments.

Visit Metadata Online now and start comprehensively checking your file metadata!