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Frequently Asked Questions

Find quick answers to common questions about our tools, features, and how to get the most out of Compress Document Pro.

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General

15 questions

PDF Tools

12 questions

Image Tools

10 questions

Office Tools

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Security & Privacy

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Premium Features

6 questions

General Questions

Compress Document Pro is a comprehensive suite of 19+ free online tools for PDF editing, image processing, and document conversion. Our tools work directly in your browser, requiring no uploads, no registration, and are 100% free forever.

We specialize in:

  • PDF tools (unlock, merge, split, compress, convert)
  • Image tools (Aadhaar/PAN cropping, passport photos, compression)
  • Office tools (Word to PDF, image to text, QR generation)
  • Utility tools (ZIP creation, format conversion)
Introduction Overview

Local processing means all file operations happen directly in your web browser using JavaScript. Your files never leave your computer or get uploaded to any server. This ensures:

  • Complete Privacy: No one else can access your documents
  • Enhanced Security: No server vulnerabilities to exploit
  • Faster Processing: No upload/download delays for most operations
  • Offline Capability: Many tools work without internet connection

The trade-off is that processing very large files might be slower depending on your device's capabilities, but the security benefits far outweigh this limitation.

Security Privacy Processing

No registration or account creation is required! All our tools are completely free to use without any sign-up process. You can:

  • Use any tool immediately without creating an account
  • Process unlimited files without login requirements
  • Access all features without providing email or personal information
  • Use tools anonymously for complete privacy

We believe in making professional tools accessible to everyone without barriers. The only exception is our Premium plan, which requires an account for billing purposes.

Account Registration Free

Our tools work on all modern browsers that support HTML5 and JavaScript. We recommend using the latest versions for the best experience:

  • Google Chrome: Version 80+ (Recommended)
  • Mozilla Firefox: Version 75+
  • Microsoft Edge: Version 80+ (Chromium-based)
  • Safari: Version 13+
  • Opera: Version 67+

Mobile browsers are also fully supported:

  • Chrome for Android
  • Safari for iOS
  • Firefox Mobile
  • Samsung Internet

If you encounter issues, please update your browser to the latest version and ensure JavaScript is enabled.

Browser Compatibility Mobile

No, there are no usage limits for free users! You can:

  • Process unlimited files
  • Use tools as many times as needed
  • No daily, weekly, or monthly limits
  • No restrictions on number of files

The only limitations are technical constraints based on your device's memory and processing power:

  • Free users: PDF files up to 50MB, images up to 20MB
  • Premium users: PDF files up to 500MB, images up to 100MB

These limits ensure smooth performance and prevent browser crashes. If you need to process larger files, consider splitting them first or upgrading to Premium.

Limits Usage Free

PDF Tools Questions

Our PDF unlock tool works by processing password-protected PDFs locally in your browser. Here's how it works:

  1. Upload: Select your password-protected PDF file
  2. Local Processing: The file is processed entirely in your browser
  3. Password Removal: The tool removes user password protection
  4. Download: Get your unlocked PDF file instantly

Important Notes:

  • Works only on PDFs with user passwords (for opening the file)
  • Cannot unlock owner passwords (for editing restrictions)
  • Does not support brute-force attacks
  • Cannot unlock files with certificate-based encryption
  • 100% legal for personal use on files you own
PDF Unlock Security Password

Yes, you can merge PDFs with different page sizes. Our merge tool handles this intelligently:

  • Preserve Original Sizes: Each page retains its original dimensions
  • Smart Scaling: Optional automatic scaling to fit a common size
  • Page Ordering: Drag and drop to arrange files in any order
  • Quality Preservation: No quality loss during merging

Recommended Process:

  1. Upload all PDFs you want to merge
  2. Arrange them in your preferred order
  3. Choose whether to preserve original sizes or scale to fit
  4. Merge and download the combined PDF

Tip: For professional documents, we recommend standardizing page sizes before merging for consistency.

PDF Merge Page Size Merging

Our PDF compression tool offers three intelligent compression levels:

1. Light Compression (Recommended)

  • Size reduction: 20-40%
  • Perfect quality preservation
  • Ideal for documents, presentations, reports
  • No visible quality loss

2. Medium Compression (Balanced)

  • Size reduction: 40-60%
  • Excellent quality for most uses
  • Slight optimization of images
  • Perfect for web uploads and email

3. Strong Compression (Maximum)

  • Size reduction: 60-80%
  • Noticeable but acceptable quality loss
  • Optimizes all elements aggressively
  • Best for archival or quick sharing

Advanced Features:

  • Target size compression (compress to specific MB/KB)
  • Image quality adjustment
  • Font subsetting options
  • Remove metadata option
PDF Compress Compression File Size

Image Tools Questions

Our Aadhaar cropper tool makes it easy to crop Aadhaar cards perfectly. Follow these steps:

Step-by-Step Process:

  1. Upload: Upload your Aadhaar card image (JPG, PNG, or PDF)
  2. Auto-Detect: The tool automatically detects Aadhaar card boundaries
  3. Manual Adjustment: Use drag handles to fine-tune the crop area
  4. Standard Size: Tool ensures 8.56cm × 5.4cm (standard Aadhaar size)
  5. Preview: View the cropped result before downloading
  6. Download: Get your perfectly cropped Aadhaar card image

Tips for Best Results:

  • Use good lighting when photographing your Aadhaar card
  • Ensure the card is flat and not curved
  • Position the camera directly above the card
  • Use high-resolution images (at least 300 DPI)
  • Save as PNG for best quality or JPG for smaller size

Supported Use Cases:

  • Bank account opening
  • Government applications
  • Mobile SIM registration
  • Document verification
  • Any official submission requiring Aadhaar copy
Aadhaar Crop ID Card

Our image converter supports all major image formats with comprehensive conversion options:

Supported Input Formats:

  • JPG/JPEG: Most common format, best for photos
  • PNG: Lossless format with transparency support
  • WebP: Modern format with excellent compression
  • BMP: Uncompressed bitmap format
  • GIF: For animated images and simple graphics
  • TIFF: High-quality format for printing
  • SVG: Vector format (converts to raster)

Supported Output Formats:

  • JPG: Adjustable quality (1-100%)
  • PNG: With or without transparency
  • WebP: Modern, efficient format
  • BMP: Uncompressed quality
  • GIF: For simple animations

Advanced Features:

  • Batch Conversion: Convert multiple images at once
  • Quality Control: Adjust compression levels
  • Resize Options: Change dimensions during conversion
  • Metadata Preservation: Keep or remove EXIF data
  • Color Profile: Maintain or convert color spaces

Recommended Settings:

  • Web use: Convert to WebP or JPG at 80% quality
  • Printing: Use PNG or high-quality JPG
  • Transparency needed: Use PNG format
  • Smallest size: WebP with compression
Image Convert Formats WebP

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