PDF工具

What is PDF工具?

PDF工具 is a locally-run Windows desktop utility built for handling everyday PDF operations without sending a single file to the cloud. Developed as an offline enterprise-grade toolkit (V1.0), it packages eight core functions into a single executable — batch image conversion, merging, splitting, compression, watermarking, AES-256 encryption/decryption, and page manipulation. Under the hood, it runs on Python 3.13 with PyQt6 and PyMuPDF, compiled via PyInstaller into a portable EXE that requires no installation or internet connection.

Who it's for

• Privacy-conscious professionals — legal, HR, or finance users who handle sensitive documents and need guaranteed offline processing with AES-256 encryption.
• Office administrators — staff who routinely prepare PDFs for distribution, needing batch conversion, compression, and watermarking in one tool.
• Power users on Windows — individuals who prefer desktop software with drag-and-drop workflows, right-click menu integration, and background task execution over web-based converters.

Key features

Batch image conversion with DPI control

Convert PDF pages to PNG or JPG at adjustable DPI settings. The offline AI super-resolution option can upscale images during conversion, giving you sharper output when source quality is lacking.

Merge and split with flexibility

Combine multiple PDFs into one document, and mix in image files directly during the merge process. Splitting works by page range or individual page extraction, giving you precise control over the output.

Compression and watermarking

Compress PDFs through image re-encoding to reduce file size for email or archiving. Add text or image watermarks with real-time preview, so you see exactly where the mark lands before applying it.

Security and page editing

Encrypt or decrypt PDFs with AES-256 password protection. Rotate, crop, or rearrange pages freely — all executed in background threads, so the interface never freezes during heavy operations.

What stands out

A fully offline PDF toolkit that treats your documents as private data, not cloud fodder.

Most PDF tools push you toward web uploads or freemium paywalls. PDF工具 takes the opposite route: everything runs locally, from AES-256 encryption to AI-assisted image upscaling. The four-layer architecture (UI → service → domain → infrastructure) keeps the tool responsive even when processing large batches, and small touches — like auto-suggested output paths, one-click folder access after completion, and remembering your last directory — make it feel like a tool built by someone who actually processes PDFs daily. The ability to add its functions to the Windows right-click menu from the help section is a genuine time-saver for repetitive tasks.

Worth checking out if…

You handle PDFs regularly on Windows and want a single, offline tool that covers conversion, merging, splitting, compression, watermarking, and encryption without juggling multiple applications. It's especially relevant if you work with confidential documents, need batch processing with progress tracking and cancellation, or want to avoid the privacy trade-offs of online PDF services. The right-click menu integration and drag-and-drop import make it easy to fold into an existing workflow, and the portable EXE format means you can run it from a USB stick on any Windows machine.