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Free Online PDF Tools

Merge, split, compress, convert and edit PDF files in your browser. No installation, no upload to third-party servers — 100% private and free.

✓ 50 Tools ⚡ Free 🔒 Private 🚫 No Login
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All PDF Tools

Showing all 50 tools

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PDF Merger
Merge multiple PDF files into one document.
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PDF Splitter
Split a PDF into individual pages or sections.
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PDF Compressor
Compress PDF files to reduce their file size.
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PDF to Image
Convert PDF pages to PNG or JPEG images.
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Image to PDF
Convert one or multiple images to a PDF file.
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PDF Page Extractor
Extract specific pages from a PDF document.
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PDF Page Rotator
Rotate pages within a PDF file.
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PDF Watermark Tool
Add text or image watermarks to PDF documents.
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PDF Text Extractor
Extract all text content from a PDF file.
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PDF Metadata Editor
View and edit PDF metadata such as title and author.
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PDF Page Numbering
Add page numbers to any PDF document.
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PDF Organizer
Reorder, delete and organize PDF pages.
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PDF Password Protector
Add password protection to PDF files.
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PDF Unlock Tool
Remove password protection from PDF documents.
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HTML to PDF
Convert HTML pages and content to PDF format.
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Word to PDF
Convert Word documents to PDF format.
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Excel to PDF
Convert Excel spreadsheets to PDF documents.
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PDF to Word
Convert PDF documents to editable Word format.
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PDF to Excel
Convert PDF tables and data to Excel format.
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PDF to Text
Extract plain text content from PDF documents.
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PDF Annotation Tool
Add annotations, notes and highlights to PDFs.
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PDF Form Filler
Fill in PDF forms and download completed documents.
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PDF Signature Tool
Add digital signatures to PDF documents.
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PDF Bookmark Manager
Add, edit and manage PDF bookmarks and links.
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PDF Optimizer
Optimize PDF files for web and mobile viewing.
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PDF Flattener
Flatten PDF layers and annotations into one layer.
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PDF Header Footer
Add custom headers and footers to PDF pages.
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PDF Background Adder
Add color or image backgrounds to PDF pages.
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PDF Page Counter
Count the number of pages in any PDF file.
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PDF Size Checker
Check the file size of uploaded PDF documents.
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PDF Compliance Checker
Check PDF compliance with PDF/A and PDF/X standards.
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PDF Linearizer
Linearize PDFs for fast web and mobile viewing.
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PDF Color Mode Converter
Convert PDF color mode between RGB and CMYK.
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PDF Image Extractor
Extract all images from a PDF document.
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PDF Link Extractor
Extract all hyperlinks from a PDF document.
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PDF Table Extractor
Extract tables from PDF documents to CSV.
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PDF Batch Converter
Convert multiple PDFs in batch processing.
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PDF to HTML
Convert PDF documents to HTML web pages.
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PDF Crop Tool
Crop page margins and content areas in PDF files.
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PDF Grayscale Converter
Convert color PDF documents to grayscale.
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PDF to PowerPoint
Convert PDF files to PowerPoint presentation format.
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PDF Thumbnail Generator
Generate thumbnail previews for PDF pages.
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PDF to CSV
Extract tabular data from PDF files to CSV.
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PDF Accessibility Checker
Check PDF files for accessibility compliance.
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PDF OCR Tool
Perform OCR on scanned PDF documents to extract text.
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PDF Batch Merger
Merge a large number of PDF files in bulk.
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PDF Font Extractor
Extract font information from PDF documents.
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PDF Layer Manager
Manage and toggle layers within PDF documents.
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PDF Comparison Tool
Compare two PDF documents side by side visually.
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PDF Timestamp Adder
Add timestamps to PDF pages automatically.
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About Our PDF Tools

PDFs are the universal format for documents, but working with them often requires expensive software. Helium Dock provides a comprehensive suite of free PDF tools that let you merge, split, compress, convert and annotate PDFs entirely in your browser. Our PDF tools use modern browser APIs and JavaScript libraries to process documents locally on your device. This means your documents never leave your computer — a critical feature for sensitive files like contracts, financial documents and personal records.

Frequently Asked Questions

Are PDF files uploaded when using these tools? ▾
No. All PDF processing happens in your browser using JavaScript. Your files are never sent to any server.
Can I merge more than two PDFs at once? ▾
Yes. Our PDF merger allows you to combine multiple files in a single operation.
Will PDF tools reduce image quality in my documents? ▾
Compression tools offer quality settings so you can balance file size and quality to your preference.

Explore All Tool Categories

Helium Dock offers 1000+ free tools across eight categories. Explore them all:

📝 Text Tools 🖼️ Image Tools 📄 PDF Tools 💻 Developer Tools 🔍 SEO Tools 🧮 Calculators 🔄 Converters ✨ Generators