All Your PDF ToolsIn One Place
Merge, split, compress, convert, and edit PDFs instantly. All processing happens in your browser – your files never leave your device.
100% Secure
Files stay local
Lightning Fast
No uploads needed
Most Popular PDF Tools
Quick access to our most-used features. All tools are completely free with no limits.
Juntar PDF
Combine vários arquivos PDF em um único documento. Mesclador...
Dividir PDF
Divida arquivos PDF em vários documentos. Extraia páginas es...
Comprimir PDF
Reduza o tamanho do arquivo PDF mantendo a qualidade. Compre...
Editar PDF
Edite arquivos PDF online. Adicione texto, imagens, anotaçõe...
JPG to PDF
Convert JPG images to PDF. Combine multiple JPG files into a...
PDF para JPG
Converta páginas de PDF em imagens JPG. Extração de alta qua...
Sign PDF
Add electronic signatures to PDF documents. Draw, type, or u...
Criptografar PDF
Proteja seu PDF com senha. Adicione criptografia e defina pe...
PDF Workflow Builder
Automate your PDF tasks by chaining multiple actions together. Create custom workflows that merge, compress, convert, and organize your documents in one go.
- Drag & Drop – Visually build your workflow with an intuitive editor
- Chain Actions – Combine merge, split, compress, convert in sequence
- Save Time – Process multiple files with a single click
110 Actions
Available in workflows
How It Works
Complete privacy. Zero uploads. Everything happens right in your browser.
Choose a Tool
Select from 110 professional PDF tools. Merge, split, convert, compress, and more.
Add Your Files
Drag and drop your PDFs. Files are processed locally in your browser for complete privacy.
Download Result
Get your processed PDF instantly. No waiting, no account required.
Why Choose pdftheory?
Trusted by millions of users worldwide for secure, fast, and reliable PDF processing.
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
No server uploads. Instant results without waiting in queues.
No Account Needed
Start using immediately. No sign-up, no email verification required.
Works Everywhere
Use on any device with a modern browser. Desktop, tablet, or mobile.