🚀 Launch Special: Get $10 OFF with code EARLYBIRD at checkout.
Windows PDF tools that keep files on your PC

Work on sensitive PDFs without uploading them.

Kala PDF is a Windows desktop toolkit for merging, splitting, optimizing, converting, OCR, watermarking, protecting, and cleaning PDFs. Your files are processed locally on your device. Pro activation uses one brief online check; daily PDF work can continue offline.

Download Free for Windows Compare Free vs Pro
Current public version: 3.0.0. Free includes all tools for evaluation and personal use with branding and limits.

Built for people who handle contracts, client files, invoices, internal records, and other documents that should stay off third-party upload forms.

Kala PDF desktop app screenshot
Local processing

PDF work runs on your Windows device.

One-time Pro activation

Pro needs one online check, then daily use can continue offline.

Free evaluation

All tools are available in Free with branding and limits.

Windows release

Current public version: 3.0.0.

The problem

Online PDF tools make privacy a tradeoff.

Most browser-based PDF tools require you to upload the document before you can merge, compress, convert, unlock, OCR, or edit it. That may be fine for disposable files. It is harder to justify for contracts, invoices, employee records, legal documents, client deliverables, and anything covered by internal data rules.

Even when an online tool is legitimate, uploading a file creates a data-transfer decision you may not want to make for routine PDF work.

The solution

Keep PDF processing local.

Kala PDF runs on Windows and performs PDF operations on your own device. Merge files, split pages, optimize size, convert documents, run OCR, add page numbers, watermark, protect or unlock PDFs, and clean metadata without sending the document to a cloud PDF service.

Pro activation requires one online connection to verify the license. After activation, normal document processing can continue offline.

Tools

One local toolkit for everyday PDF work.

All 14 tools are available in Free so you can test them with your own files. Free output includes Kala PDF branding and tool-specific limits. Pro removes branding, unlocks higher limits, and allows professional and commercial use.

Organize documents

Merge PDFs, split documents, reorder pages, remove pages, and rotate pages without uploading files.

Merge, Split, Reorder Pages, Remove Pages, Rotate

Convert and capture

Convert PDF content, turn images into PDFs, create searchable PDFs with OCR, and extract embedded images.

Convert, Images to PDF, Searchable PDF OCR, Extract Images

Prepare finished output

Optimize file size, including stronger compression workflows for large PDFs, then add page numbers or watermarks for documents that need to be shared, archived, or delivered professionally.

Optimize, Page Number, Watermark

Protect and clean

Protect or unlock PDFs, inspect metadata, edit metadata, and strip metadata before sharing files.

Security, Metadata
Free vs Pro

Free proves the workflow. Pro removes the production limits.

The Free version is not a locked demo. It includes every Kala PDF tool so you can confirm the app works with your documents. Free is designed for evaluation and personal use, so output includes Kala PDF branding and each tool has practical limits. Pro is for finished work: clean output, higher limits, and professional and commercial usage rights.

Free

Evaluate every tool with branding and limits.

  • All 14 tools available
  • For evaluation and personal use
  • Output includes Kala PDF branding
  • Tool-specific limits apply
Pro

Create clean, higher-limit output for professional use.

  • Removes Kala PDF Free branding from future output
  • Unlocks higher limits for production workflows
  • Allows professional and commercial use
  • Requires one online activation, then daily processing can continue offline
Privacy & compliance support

Clear boundaries for what stays local and what goes online.

Kala PDF is designed to reduce upload-related exposure, not to make unsupported legal guarantees.

Document processing stays local

PDF files are processed on your computer for merge, split, convert, OCR, optimize, watermark, security, and metadata tools.

Activation has a narrow online scope

Pro activation sends your product key and a device identifier to verify the license. Your PDF documents are not uploaded as part of activation.

Payments happen outside the app

Checkout is handled by Lemon Squeezy. Kala PDF itself remains a local Windows app for day-to-day document work.

Review compliance details Download Free for Windows
Pricing

Choose Free for evaluation. Choose Pro for clean professional output.

Free lets you try every tool with branding and limits. Pro removes the branding, unlocks higher limits, and licenses Kala PDF for professional and commercial workflows.

Free
$ 0

Try every tool with your own files.

  • All 14 PDF tools available
  • Local PDF processing on your device
  • Output includes Kala PDF Free branding
  • Tool-specific limits for file size, pages, batch count, or partial output
  • For evaluation and personal use
Download Free

Includes all tools with branding and limits.

Clean output
Pro
$ 19 $29

Clean output for professional PDF work.

Use code EARLYBIRD at checkout.

  • Removes Kala PDF Free branding from future output
  • Unlocks higher limits for production workflows
  • Allows professional and commercial use
  • One-time online activation
  • Daily PDF processing can continue offline after activation
  • Product key delivered by email after checkout
Get Pro for $19

Pro activation requires an internet connection once. Your PDF files are not uploaded for activation or processing.

Frequently Asked Questions

The key purchase and activation details, before you install or upgrade.

Changelog

See what has shipped.

Current public version: 3.0.0. The latest release includes the 14-tool Windows PDF toolkit, searchable PDF OCR, and the Free and Pro model used across the site and app.

See full changelog Download v3.0.0 for Windows

Ready to stop uploading routine PDF work?

Download Kala PDF for Windows, test every tool in Free, and upgrade to Pro when you need clean, higher-limit output for professional work.

Download Free for Windows Get Pro