Client-Side WebAssembly EngineZero Cloud Uploads

Smart, Private & Instant PDF Tools for Modern Work.

Merge, split, compress, convert, and legally sign PDF files directly inside your browser. Powered by on-device WebAssembly — your confidential files never leave your computer.

Zero Cloud Upload

100% In-Browser Memory

<300ms Processing

Hardware Accelerated

GDPR Compliant

No Tracking or Logs

Unlimited & Free

No Paywalls or Signup

All PDF Utilities

Select any tool to start processing files immediately on your device.

Showing 23 tools
Popular

Merge PDF

Combine multiple PDF files into a single unified document with custom order.

Free Client ToolInstant WASM →
Popular

Split PDF

Extract specific page ranges or split each page into individual documents.

Free Client ToolInstant WASM →

Rotate PDF

Rotate pages permanently by 90, 180, or 270 degrees in high fidelity.

Free Client ToolInstant WASM →

Delete Pages

Remove unwanted, blank, or duplicate pages from any PDF instantly.

Free Client ToolInstant WASM →
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Crop PDF

Trim margins, crop dimensions, and adjust visible page viewports.

Free Client ToolInstant WASM →
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N-Up PDF

Tile 2, 4, or 8 pages onto a single sheet for efficient printing.

Free Client ToolInstant WASM →
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Page Numbers

Stamp formatted page numbering, headers, and bates codes across pages.

Free Client ToolInstant WASM →
Popular

Compress PDF

Reduce heavy PDF file sizes up to 90% while keeping sharp vector text.

Free Client ToolInstant WASM →
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Repair PDF

Reconstruct damaged PDF cross-reference tables and recover unreadable text.

Free Client ToolInstant WASM →
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Grayscale PDF

Convert color documents into clean monochrome black-and-white for low-cost printing.

Free Client ToolInstant WASM →
Popular

PDF to Word

Convert fixed PDFs back into editable Microsoft Word DOCX files.

Free Client ToolInstant WASM →
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Word to PDF

Render DOCX documents into universal, high-quality PDF files.

Free Client ToolInstant WASM →
Popular

PDF to Excel

Extract embedded tabular rows directly into clean Excel spreadsheets (.xlsx).

Free Client ToolInstant WASM →
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Excel to PDF

Convert XLSX workbooks and CSV data sheets into publication-ready PDF tables.

Free Client ToolInstant WASM →
Popular

JPG to PDF

Merge JPG, PNG, and WebP image collections into a structured PDF booklet.

Free Client ToolInstant WASM →

PDF to JPG

Export PDF document pages into high-resolution standalone JPG images.

Free Client ToolInstant WASM →
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HTML to PDF

Render HTML code and web templates into crisp, vectorized PDF sheets.

Free Client ToolInstant WASM →
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Extract Images

Extract all embedded graphic assets and photos from any PDF in original quality.

Free Client ToolInstant WASM →
Popular

Sign PDF

Create, draw, or type legally binding digital signatures directly on contracts.

Free Client ToolInstant WASM →
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Watermark PDF

Stamp confidential, draft, or copyright watermark text across all document pages.

Free Client ToolInstant WASM →
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Flatten PDF

Lock interactive fillable form fields, comments, and signatures into permanent pages.

Free Client ToolInstant WASM →
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Bates Numbering

Apply sequential legal indexing codes and custom alphanumeric case prefixes.

Free Client ToolInstant WASM →
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Edit Metadata

View and customize PDF author, title, keywords, producer, and creation timestamps.

Free Client ToolInstant WASM →
Architecture Comparison

Why Rupix PDF Outperforms Traditional Cloud Converters

Legacy online PDF websites upload your sensitive files to remote servers. Rupix executes everything directly on your machine.

Traditional Cloud PDF Tools

Cloud Upload Architecture

  • Server Upload Required: Your private documents are transmitted across the internet to third-party cloud servers.
  • Slow Queue Delays: Waiting for upload bandwidth, server queues, and post-processing download links.
  • Strict File Caps & Paywalls: Daily task quotas, 25MB file size limits, and aggressive subscription paywalls.
  • Data Leak Vulnerability: Document bytes temporarily stored in server temp folders risking corporate compliance.
Rupix PDF Browser Engine

100% Client-Side WebAssembly

  • Zero Bytes Uploaded: Processing happens entirely within your browser's sandboxed WebAssembly runtime.
  • Instant Sub-Second Execution: Zero network latency. Massive multi-page documents merge and compress instantly.
  • Unlimited & Free Forever: Process hundreds of files without subscriptions, credit cards, or account creation.
  • Enterprise Data Sovereignty: Compliant with strict legal, medical, and banking privacy regulations.
How It Works

Three Steps to Document Freedom

No signup, no waiting, no complicated software installation.

1

Select Your Files

Drag & drop any PDF, Word, Excel, or image file directly into the tool dropzone. Your file opens instantly in browser memory.

2

Instant WASM Processing

Customize page order, compression levels, or signatures. The local engine compiles your changes in milliseconds without cloud queues.

3

Save Directly to Device

Download your modified document instantly to your hard drive. No file links sent to email, zero server tracking.