Is Crop PDF free to use on PDFtan?

Yes, Crop PDF is completely free to use with up to 800 tasks allocated daily.

Are my files secure when using Crop PDF?

Yes. All uploads are processed in isolated memory workspaces and deleted permanently within minutes under our zero-retention guarantee.

What is the maximum file size supported for Crop PDF?

Crop PDF supports files up to 50MB.

Crop PDF Online Free — Fast & Secure PDF Processing

Fast & Effortless Workflow

How to Use Crop PDF Online

Transform, optimize, and process your documents in three simple steps directly in your web browser with zero software downloads.

Upload Your Document

Click the “Select .pdf” button or drag and drop your files directly into the secure upload area from your computer, smartphone, Google Drive, or Dropbox.

Configure & Process

Customize your conversion parameters, page sequence, or visual settings. Our isolated backend cluster executes the conversion with sub-second native C++ execution speeds.

Download & Auto-Purge

Instantly download your processed high-fidelity document. All uploaded files and temporary workspaces are permanently wiped automatically under our zero-retention guarantee.

Deep Specifications

Technical Specifications & System Attributes

Engine specifications, compatibility standards, and security parameters for Crop PDF.

Feature / Parameter	Specification Details
Supported Formats	Standard PDF, PDF/A, DOCX, XLSX, PPTX, JPG, PNG, WEBP (.pdf)
Processing Engine	Headless Native Linux Binary Cluster (QPDF, Ghostscript, LibreOffice, Tesseract OCR)
Max File Capacity	50 MB per task (Up to 1 files simultaneously)
Data Retention Policy	100% Zero-Retention Ephemeral RAM Workspace (Auto-deleted in 15-60 min)
Platform Availability	Cloud Web, Windows, macOS, Linux, Android, iOS, iPadOS

Core Architecture

Why Users Choose PDFtan for Crop PDF

Built from the ground up for high concurrency, lossless output, and absolute document confidentiality.

Sub-Second Execution

Bypass browser slowdowns. Tasks are processed by our native Linux binary worker pipelines in milliseconds.

Zero Permanent Storage

Strict privacy architecture. Uploaded files exist only in ephemeral storage and are automatically destroyed.

Lossless Vector Fidelity

Maintains original typography, embedded fonts, vectors, annotations, and formatting with zero quality loss.

Answers & Help

Frequently Asked Questions about Crop PDF

Common questions regarding security, task quotas, device compatibility, and file retention.

Yes! Crop PDF is 100% free to use on PDFtan. We provide generous daily task quotas (up to 800 free conversions daily) without watermarks, trial periods, or hidden subscriptions.