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Online PDF tools

WhatAPDF — Free Online PDF Tools: Edit, Merge, Sign & AI

37 free PDF tools in one place. Edit, merge, split, compress, sign, OCR — plus built-in AI for chat, study and document writing. No signup, no watermarks.

Also on your phone Scan, sign and convert on the go — your digital certificate never leaves the device.

Online PDF tools

No tools match your search.
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PDF Merger

Advanced merging with drag-and-drop reordering and page configuration.

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PDF Splitter

Professional splitting with visual selection, multiple modes, and batch processing.

Extract Pages

Precision page extraction with interactive selection and advanced filters.

Extract Images

Extract all embedded images from PDF files with preview and selection.

PDF Rotator

Professional rotation with individual page control and real-time preview.

Page Numbers

Add page numbers and custom text to your PDF documents with multiple styles.

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PDF Compressor

Intelligent compression with quality settings, preview, and professional optimization.

Repair PDF

Fix corrupted or damaged PDF files and recover content.

OCR - Extract Text

Extract text from scanned PDFs and images using OCR technology.

PDF to Word

Convert PDF documents to editable Word files with text extraction.

PDF to Excel

Extract tables and data from PDF to Excel spreadsheets.

PDF to PowerPoint

Convert PDF presentations to editable PowerPoint slides.

PDF to JPG

Convert PDF pages to high-quality JPG images.

PDF to PDF/A

Convert PDFs to archival PDF/A format for long-term preservation.

Word to PDF

Convert Word documents to professional PDF files.

Excel to PDF

Convert Excel spreadsheets to PDF documents.

JPG to PDF

Convert JPG images to PDF documents.

HTML to PDF

Convert HTML code to professional PDF documents.

PowerPoint to PDF

Convert PowerPoint presentations to PDF format.

PDF Editor

Complete PDF editing suite with text, images, annotations and more.

PDF Forms

Create and edit interactive PDF forms with multiple field types and professional form management.

Add Watermark

Add text or image watermarks to protect your PDF documents.

Crop PDF

Crop PDF pages and trim margins with visual editor.

PDF Metadata

View and edit PDF document metadata: title, author, keywords and more.

Coordinates Finder

Professional coordinate detection for precise positioning and documentation.

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PDF Signature

Advanced digital signature solution with multi-page support and professional stamping.

e-Signature

Prepare and send documents for electronic signature with legally binding verification.

Protect PDF

Add password protection to your PDFs with AES-256 encryption and custom permissions.

Unlock PDF

Remove password protection from PDFs when you know the password.

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AI Summaries

Generate summaries and flashcards from your PDFs. Perfect for studying and learning.

AI

Chat with PDF

Ask questions about your PDF documents using AI. Get instant answers and summaries.

AI

Translate PDF

Translate PDF documents to any language using AI with side-by-side comparison.

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AI Document Generator

Generate Word and PDF documents with AI. Contracts, letters, reports and more, ready in seconds.

Handwriting to PDF

Convert handwritten notes to professional PDFs with AI. Keeps drawings and diagrams intact.

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Compare PDFs

Compare budgets, contracts and documents. Detect price changes and modified clauses with AI.

PDF Creator

Design PDFs from scratch with a visual editor. Add text, shapes, images and tables in minutes.

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AI Resume Builder

Create professional resumes and CVs with AI assistance, exported as PDF.

AI Notebook

37 PDF Tools
16 Languages

Why Choose WHAT A PDF!?

Trusted by professionals worldwide for reliable and secure PDF processing

Secure Processing

Files are transferred over an encrypted connection and processed on our servers. Temporary files are automatically deleted within one hour. Documents you choose to save in your account are kept until you delete them.

Lightning Fast

Process your PDFs instantly with our optimized algorithms.

Files and usage limits

Free tools have file-size and usage limits. Some features require an account or a paid plan. Check the limits shown by the tool and the pricing page before uploading.

AI Tools

Discover our full suite of AI-powered tools

Native apps

Your PDF toolkit, now in your pocket

Everything you do here, on your phone and tablet — plus signing with your digital certificate, which never leaves the device.

  • Open PDFs straight from Mail, Files or Photos
  • Sign with your digital certificate (PAdES, LTV)
  • Convert, merge, compress and OCR on the go
  • Same account and same files as the web
WHAT A PDF!

Merge · Compress · Sign · Convert · OCR · Chat

Built for everyone who works with PDFs

The tools you need, without the friction you expect.

Students

Summarize books and notes, generate flashcards, translate papers, draft your thesis and export to PDF in minutes.

Top tools: PDF Study · Chat with PDF · AI Document Writer · PDF Translator

Professionals

Sign contracts online, redact sensitive info, compare proposal versions, compress attachments for email.

Top tools: e-Signature · Compare PDFs · Redact PDF · Compressor

Small businesses

Generate invoices and contracts with AI, collect digital signatures, share fillable forms and digitize paper docs.

Top tools: AI Document Writer · PDF Forms · Collaborate · OCR

Developers

Integrate any tool via REST API. Pay-as-you-go, no annual contract or enterprise sales gate.

For devs: API Docs · Integrations

Frequently asked questions

The things people most ask us before getting started.

Files and usage limits

Free tools have file-size and usage limits. Some features require an account or a paid plan. Check the limits shown by the tool and the pricing page before uploading.

Are my files uploaded?

Files are transferred over an encrypted connection and processed on our servers. Temporary files are automatically deleted within one hour. Documents you choose to save in your account are kept until you delete them.

Can I edit the original PDF text?

Yes. You can edit existing text and add text, images and annotations. Editing existing text sends the PDF to our server for processing. Scanned pages need OCR before their text can be edited.

Ready to take WHAT A PDF! everywhere?

Install the Chrome extension to open Gmail PDFs in one click, or plug in our REST API if you're building something.

Add to Chrome Try the API
WHAT A PDF! for Gmail - Chrome Extension

Open PDF attachments from Gmail directly in WHAT A PDF!. Edit, sign, and convert your PDFs instantly!

Install Free Extension

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