Online PDF Tools Suite

Merge, split, compress, rotate, protect, and convert PDFs client-side. Convert Images & Word documents to PDF without uploading to a server.

PDF Utilities

100% Client-Side Protection

All rendering, file assemblies, and cryptographic processes happen instantly inside your browser. No files are uploaded to any server.

Image to PDF
Convert JPG/PNG to PDF. No server uploads.

Click to upload images

Supports PNG, JPG, JPEG, WEBP

Online PDF Tools: 100% Local & Privacy-Preserving Editing

Most online PDF editors force you to upload your sensitive tax records, bank statements, and legal agreements to remote servers. This introduces massive privacy and identity-theft risks. ModernCalcs PDF Suite is built on a serverless, client-side model. Every single tool runs entirely inside your browser's local sandbox. No data ever leaves your device.

Formula
Local Compute = Instant Conversions + Absolute Privacy

Using local file streams and canvas resources rather than remote queues.

Expert Verified Calculation

This calculator utilizes standard mathematical formulas audited and verified by our team of Security & Audit Teams to ensure mathematical precision and compliance.

Last Evaluated: May 2026
Official Guidelines

Instant Multi-Image Compilation

Our Image to PDF compiler lets you select multiple photos, drag and drop to reorder pages, and package them as a single clean PDF document. This is ideal for compiling receipts, scanning forms, or packaging portfolios.

Locally Secured Files

When you add password security, watermarks, or compress a document, our tools use standard browser canvas streams and cryptographic hooks to process files at the speed of your device, shielding you from data leakage.

Advantages of Serverless PDF Editing

  • Zero Server Uploads: Your banking and tax documents stay safely on your computer.
  • Infinite Processing Limits: No file size caps or daily conversion limits.
  • Instantly Responsive: No queuing, no waiting for files to upload or download from remote APIs.

Frequently Asked Questions

Is it safe to upload my sensitive PDF documents to this tool?

Yes, 100%. ModernCalcs is built on a client-side architecture. Your PDF documents are never uploaded to any backend server. All merges, splits, watermarks, compression, and conversions happen directly within your browser's local sandbox.

What tools are included in the PDF Suite?

The suite includes 9 advanced tools: Image to PDF, Word to PDF, PDF to Image, Merge PDFs, Split PDF, Compress PDF, Rotate PDF, Watermark PDF, and PDF Password locker.

How does the Image to PDF converter work?

You can drag and drop multiple images (PNG, JPG, WEBP), arrange them in any order, and compile them into a high-quality multi-page PDF document which downloads instantly.

Do I need to sign up or pay to use the PDF editor?

No. All PDF tools are 100% free, have no limits, require no sign-up, and do not show advertisements.