Compress PDF size, merge files, add images & arrange pages easily. 100% private!
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PDF321 is a powerful document management app designed to compress PDF size, arrange PDF pages, merge multiple PDF files, and convert images into PDF pages. Enjoy a seamless experience with fast processing, and 100% offline privacy.
★ FEATURES AT A GLANCE:
• PDF Compression: Reduce PDF file to your Desired size in KB or MB with multi-level compression presets while maintaining document readability.
• PDF Page Arranger & Editor: Easily reorder, rotate, delete, or insert pages using drag-and-drop page previews.
• PDF Merger: Combine multiple PDF documents into a single organized file in seconds.
• Image to PDF Pages: Convert photos, receipts, or scanned images directly into high-quality PDF pages.
• Light & Dark Theme: Automatic and customizable theme switching for comfortable document editing day or night.
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► SMART PDF COMPRESSOR – REDUCE FILE SIZE
Large PDF files can be difficult to send via email, chat apps, or online application portals. PDF321 features a smart compression engine that significantly reduces PDF file size while preserving text sharpness and image clarity.
• Target Size Optimization: Compress PDFs for official forms, job applications, or university submissions.
• Multi-Variant Quality Selection: Choose between high, balanced, or maximum compression levels.
• Instant File Size Comparison: Preview original vs compressed file sizes before saving or sharing.
• Fast Local Processing: Compress PDF documents directly on your device without uploading files to external servers.
► INTERACTIVE PDF PAGE ARRANGER & EDITOR
Take full control over the structure of your PDF documents. PDF321 offers a visual page organizer with real-time thumbnail previews.
• Drag-and-Drop Page Reordering: Rearrange pages into any custom sequence effortlessly.
• Page Rotation & Alignment: Rotate individual pages by 90, 180, or 270 degrees to fix inverted scans.
• Page Deletion: Remove unnecessary, blank, or duplicate pages with a single tap.
• Insert & Extract Pages: Add pages from other PDF files or append scanned images directly into your document.
• Clear Visual Thumbnails: View high-resolution page thumbnails before exporting.
► CONVERT & INSERT IMAGES AS PDF PAGES
Effortlessly convert camera photos, receipts, notes, or gallery images into clean PDF pages.
• Photo to PDF Page: Select images from your device and append them as new pages inside your PDF document.
• Scan & Organize: Combine document scans and photos with existing PDF files in a single unified workflow.
• Multi-Image Support: Select multiple images at once and convert them into organized PDF pages.
► FAST PDF MERGER – COMBINE MULTIPLE FILES
Combine scattered PDF files, reports, invoices, or study materials into one single document.
• Multi-File Selection: Select two or more PDF files from your device storage.
• Custom File Ordering: Move files up or down to set the exact merging order before output.
• One-Tap Merging: Join multiple PDFs into a unified file within seconds.
• Custom Naming & Password Protection: Rename merged files and optional password encryption for security.
► 100% PRIVATE, SECURE & OFFLINE-FIRST
Your privacy is our highest priority. All PDF compression, page arranging, image conversion, and merging processes are performed locally on your device hardware.
• No Cloud Upload Needed: Your documents never leave your phone.
• Password Protection: Set Password in PDF files.
• No Watermarks: Export PDF documents without added logos or watermarks.
► ADAPTIVE LIGHT & DARK THEME
► SIMPLE & EASY TO USE
1. Select Files or Images: Choose the PDF documents, pages, or gallery photos you want to manage.
2. Edit or Compress: Adjust compression levels, reorder pages, add photos, or arrange file order.
3. Save & Share: Export and Share your customized PDF document instantly via email or messaging apps.
Download PDF321: Compress, Arrange & Merge today to simplify your document workflow with fast, secure, & offline PDF tools