✦ 24 PDF Tools — Free Forever

The PDF toolkit built
for the AI age

Merge, split, compress, convert, watermark, protect, and OCR — all running locally in your browser. Your files never leave your device.

🔒 100% Private
⚡ No Upload
🌐 Works Offline
✅ No Signup
🆓 Always Free
🛡️

Zero Data Exposure

All processing happens in your browser. Files never touch our servers.

⚡

Instant Results

No upload wait. Convert, compress, and merge in seconds locally.

🤖

AI-Powered OCR

Tesseract.js makes scanned PDFs fully searchable in 5+ languages.

📱

Works Everywhere

Desktop, tablet, mobile — any browser, any device, no install.

All 24 Tools
Click any tool to get started instantly
View all →
24
Free Tools
100%
Client-Side
0
Data Uploaded
5+
OCR Languages
∞
Files Processed

Ready to work smarter
with PDFs?

No account, no upload, no waiting. Just open a tool and go.

All PDF Tools

24 tools. All free. All run in your browser. Select one to get started.

AiMaste / Tools / Tool
🔧
Tool
Description

Simple, honest pricing

All 24 tools are free forever. Premium unlocks batch processing and API access.

Monthly Annual — Save 40%
Free
$0/mo
Forever free
All 24 PDF tools with no limits on file count. Perfect for personal use.
  • All 24 PDF tools
  • 100MB per file
  • Client-side processing
  • OCR in 5 languages
  • Batch processing
  • API access
  • Priority support
Most Popular
Premium
$9/mo
Billed monthly
Everything in Free plus batch processing, larger files, and early access to AI features.
  • All 24 PDF tools
  • 500MB per file
  • Batch processing (up to 50 files)
  • OCR in 40+ languages
  • Advanced AI translation
  • Priority support
  • API access
Business
$29/mo
Per workspace · billed monthly
Team management, REST API, SSO, and compliance tools for enterprises.
  • Everything in Premium
  • REST API access (iLoveAPI)
  • Team workspace (unlimited seats)
  • SSO / SAML
  • Audit logs & compliance
  • SLA-backed support
  • Custom branding

Full Feature Comparison

FeatureFreePremiumBusiness
All 24 PDF tools✓✓✓
File size limit100 MB500 MBUnlimited
Files per sessionUnlimitedUnlimitedUnlimited
Batch processing✕✓✓
OCR languages540+40+
AI PDF translation✕✓✓
REST API✕✕✓
Team workspace✕✕✓
SSO / SAML✕✕✓
Priority support✕✓✓

Blog & Guides

Tips, tutorials, and insights on working with PDFs

📄
Guide
How to Compress a PDF Without Losing Quality
A step-by-step walkthrough of our compression engine, explaining how JPEG quality settings affect visual fidelity versus file size.
March 20255 min read
🔍
Tutorial
OCR Explained: Making Scanned PDFs Searchable
Discover how Tesseract.js runs entirely in your browser to extract text from scanned documents — no data sent to any server.
February 20257 min read
🔐
Security
PDF Encryption: What "Protect PDF" Actually Does
We break down AES-256 PDF encryption, what user vs. owner passwords mean, and why client-side encryption is more secure than server-side.
January 20256 min read
📊
Deep Dive
PDF to Word: Why Color and Formatting Is Hard
An inside look at our operator-stream color extraction engine — how we walk PDF drawing commands to preserve backgrounds, fonts, and text colors.
December 20249 min read
⚡
Performance
Why Client-Side PDF Processing Is Faster Than You Think
With WebAssembly and modern JS engines, processing PDFs in-browser is now competitive with server-side tools — and infinitely more private.
November 20244 min read
🔀
Tutorial
Merge PDFs Like a Pro: Tips for Large Document Sets
Best practices for combining dozens of PDFs, handling encrypted files, and managing page order — all with our free Merge tool.
October 20245 min read

Built for people who care about privacy

AiMaste is a PDF toolkit that puts your data first. Every tool runs in your browser — your files never touch our servers. We built what we wished existed.

Our Mission

Most PDF tools require you to upload sensitive documents to unknown servers, where they may be stored, analyzed, or monetized. We built AiMaste to prove that powerful PDF processing doesn't require sacrificing privacy.

By combining PDF.js, pdf-lib, Tesseract.js, and docx.js — all running via WebAssembly in the browser — we deliver professional-grade results with zero data exposure.

How It Works

  • PDF.js by Mozilla reads and renders PDF pages entirely in-browser.
  • pdf-lib handles PDF creation, modification, merging, splitting, rotation, encryption, and watermarking.
  • docx.js builds DOCX files with full formatting, colors, fonts, and table structures from extracted PDF data.
  • Tesseract.js runs the Tesseract OCR engine via WebAssembly to recognize text in scanned PDFs.
  • JSZip packages multi-page exports as downloadable ZIP archives.

Privacy Commitment

When you use AiMaste.com:

  • Your files are never uploaded to any server
  • All processing happens in your browser's JavaScript engine
  • We don't log file names, sizes, or contents
  • No account required for any free tool
  • Files are immediately discarded when you close the tab

Security & Compliance

🔒 TLS 1.3 Encrypted
✅ GDPR Compliant
🛡️ No Data Retention
📋 SOC 2 Ready
🌐 aimaste.com