Free PDF Converter
Convert documents, images, and presentations to PDF online, or convert PDF to other formats. Supports Word, Excel, PowerPoint, JPG, PNG, HTML and 30+ more formats. No signup, no software to install.
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Supports M4A, WAV, FLAC, OGG, AAC, WMA, AIFF, OPUS • Max 100 MB
Convert to PDF
15 converters — documents, images, and presentations to PDF
Convert Word documents to PDF with preserved formatting, fonts, tables, and images. The most popular document conversion.
PresentationConvert PowerPoint presentations to PDF for easy sharing. Preserves slide layouts, charts, and embedded media.
SpreadsheetConvert Excel spreadsheets to PDF with proper page breaks, column widths, and print-ready formatting.
ImageConvert JPG images to PDF documents. Combine multiple photos into a single PDF for sharing or printing.
ImageConvert PNG screenshots and graphics to PDF. Transparency is preserved on a white background.
WebConvert HTML files and web pages to PDF documents. Preserves formatting, links, and embedded images.
Convert from PDF
Convert PDF files to editable documents, images, and other formats
Convert PDF to editable Word documents. Preserves tables, fonts, images, and paragraph formatting.
ImageConvert PDF pages to JPG images. Extract pages as separate images for presentations and social media.
ImageConvert PDF pages to lossless PNG images. Perfect for high-quality screenshots and transparent backgrounds.
PresentationConvert PDF presentations back to editable PowerPoint slides. Recover slide content and layouts.
WebConvert PDF documents to HTML for web publishing. Enables search indexing and responsive display.
TextExtract plain text from PDF files. Remove all formatting for clean text processing and data extraction.
PDF Tools
Edit, optimize, and manage PDF files without converting
Combine multiple PDF files into a single document. Arrange pages in any order before merging.
ToolSplit a PDF into separate files by page range. Extract specific pages or divide into individual page files.
ToolReduce PDF file size by 50–80%. Optimizes images and compresses content. Perfect for email attachments.
ToolRemove password protection from PDF files. Unlock PDFs for editing, printing, and copying text.
ToolRotate PDF pages by 90, 180, or 270 degrees. Fix sideways scans and correct page orientation.
ToolDelete specific pages from a PDF document. Remove blank pages, cover sheets, or unnecessary content.
Which Converter Do I Need?
Not sure which tool fits your use case? Here is a quick guide based on what you need to accomplish:
| I need to… | Use | When to use |
|---|---|---|
| Send a Word doc as PDF | DOCX to PDF | Share reports, contracts, and documents in a universally readable format that preserves fonts and layout. |
| Edit a PDF in Word | PDF to DOCX | Convert received PDF documents back to editable Word files. Fix typos, update content, add comments. |
| Share slides as PDF | PPTX to PDF | Send presentations as PDF when recipients do not have PowerPoint. Preserves slide layouts and fonts. |
| Create image PDFs | JPG to PDF | Combine photos into a PDF for printing photo books, creating portfolios, or submitting image-based documents. |
| Extract PDF pages as images | PDF to JPG | Convert PDF pages to images for social media, presentations, or embedding in other documents. |
| Combine multiple PDFs | Merge PDF | Join multiple PDF files into one document. Useful for combining invoices, reports, or scanned pages. |
| Reduce PDF file size | Compress PDF | Shrink large PDFs for email attachments (25 MB limit). Typical compression: 50–80% size reduction. |
| Extract text from PDF | PDF to TXT | Get plain text from PDF files for data processing, search indexing, or copying content without formatting. |
PDF vs Other Document Formats
How does PDF compare to other popular document and file formats? Here is a side-by-side comparison:
| Format | Type | Editable | Fixed Layout | Searchable | Best For |
|---|---|---|---|---|---|
| Fixed | Limited | Yes | Yes | Universal sharing, printing, archival, legal documents, forms | |
| DOCX | Editable | Yes | No | Yes | Reports, letters, manuscripts, collaborative editing in Word |
| PPTX | Slides | Yes | Per-slide | Yes | Presentations, pitch decks, training materials, slideshows |
| XLSX | Spreadsheet | Yes | No | Yes | Financial data, calculations, charts, data analysis |
| HTML | Web | Yes | No | Yes | Web pages, responsive content, SEO-friendly documents |
| TXT | Plain text | Yes | No | Yes | Code, logs, data exchange, maximum compatibility |
| EPUB | eBook | Limited | Reflowable | Yes | eBooks, digital publishing, responsive reading on e-readers |
| RTF | Rich text | Yes | No | Yes | Cross-platform formatted text, legacy document exchange |
Bottom line: PDF is the universal document format for sharing and archival. It looks identical on every device and platform. For editing, use DOCX (Word). For web publishing, use HTML. For data, use XLSX. Convert to PDF when you need a finalized, print-ready document that will never change.
PDF Subtypes & Standards
PDF is not one single format — there are specialized subtypes for different industries. Each subtype is an ISO standard that enforces specific rules to ensure reliability:
| Subtype | Full Name | ISO Standard | Purpose & Requirements |
|---|---|---|---|
| PDF/A | Archival | ISO 19005 | Long-term preservation. All fonts embedded, no encryption, no external references. Required for government records, legal archives, and compliance. Levels: PDF/A-1a, -1b, -2a, -2b, -3a, -3b. |
| PDF/X | Print Exchange | ISO 15930 | Pre-press and commercial printing. Mandates CMYK or spot colors, embedded fonts, and trim/bleed boxes. Used by print shops, publishers, and packaging designers. |
| PDF/E | Engineering | ISO 24517 | Engineering and technical documents. Supports 3D content, interactive elements, and large-format drawings. Used in AEC (architecture, engineering, construction). |
| PDF/UA | Universal Access | ISO 14289 | Accessibility. Requires document structure tags, alt text for images, reading order, and assistive technology support. Required for government and public-sector documents. |
| PDF/VT | Variable & Transactional | ISO 16612 | High-volume personalized printing. Variable data printing (bills, statements, direct mail) with optimized rendering and color management. |
| PDF 2.0 | Latest standard | ISO 32000-2 | The current PDF standard (2017). Adds 256-bit AES encryption, enhanced tagged PDF, geospatial data, and improved accessibility. Replaces PDF 1.7. |
For most users: Standard PDF works for everyday documents. Use PDF/A when you need documents to remain readable for decades (legal, government, archival). Use PDF/X when sending files to a professional print shop.
What Is PDF?
PDF (Portable Document Format) was created by Adobe in 1993 and became an open ISO standard (ISO 32000) in 2008. It is the most widely used document format in the world, designed to present documents consistently across every device, operating system, and application.
PDF works by describing each page as a collection of objects: text, fonts, images, vector graphics, and annotations. Unlike Word or HTML, PDF preserves the exact visual layout — what you see on screen is what gets printed. Fonts are embedded in the file, so documents look identical even when the recipient does not have the original fonts installed.
Key technical facts:
- Standard: ISO 32000-2:2020 (PDF 2.0)
- File extension:
.pdf - Created by: Adobe Systems (1993), now an open ISO standard
- Content types: Text, images, vector graphics, forms, annotations, multimedia
- Color spaces: RGB, CMYK, Lab, ICC-based profiles
- Security: 128-bit/256-bit AES encryption, password protection, digital signatures
- Compression: Flate (lossless), JPEG (lossy for images), JBIG2 (scanned pages)
- Max file size: No theoretical limit (practical limit depends on software, typically several GB)
- Subtypes: PDF/A (archival), PDF/X (print), PDF/E (engineering), PDF/UA (accessibility)
PDF remains the standard for business documents, legal contracts, government forms, academic papers, and print-ready files. Every modern operating system, browser, and mobile device can open PDFs natively without additional software.
How It Works
Converting files to or from PDF with Convertio takes three simple steps:
- Upload your file — drag and drop or click to browse. We accept documents (Word, Excel, PowerPoint, RTF, ODT, TXT, EPUB), images (JPG, PNG, TIFF, SVG, HEIC), and HTML files up to 100 MB.
- Choose your output format — select PDF as the target format, or choose a format to convert from PDF (DOCX, JPG, PNG, PPTX, HTML, TXT, and more). Adjust settings if needed.
- Download your file — conversion takes seconds. Your file is ready to download immediately. Files are auto-deleted from our servers within 2 hours.
Common Use Cases
Document Sharing
Share contracts, reports, and proposals as PDF. Recipients see the exact same layout regardless of their device or software.
Legal & Contracts
Create tamper-evident documents with digital signatures. PDF/A format ensures contracts remain valid and readable for decades.
Print-Ready Files
Convert designs and documents to PDF/X for professional printing. Ensures correct colors, fonts, and bleed areas.
Forms & Applications
Create fillable PDF forms for job applications, surveys, and registrations. Users fill in fields without needing special software.
Archival & Compliance
Preserve documents in PDF/A format for long-term storage. Required by regulations in legal, medical, and government sectors.
Office Conversion
Convert between Office formats and PDF for cross-platform compatibility. Word, Excel, and PowerPoint to PDF and back.
Platform Compatibility
PDF is supported natively on virtually every modern platform:
| Platform | Support | Notes |
|---|---|---|
| Windows | Native | Built-in PDF viewer in Edge browser. Windows 10/11 can print to PDF natively. Adobe Reader optional. |
| macOS | Native | Preview opens PDFs. Print dialog includes “Save as PDF”. Full annotation and form-filling support. |
| Linux | Native | Evince, Okular, and Firefox open PDFs. LibreOffice can create and edit PDFs. Poppler for command-line tools. |
| iOS / iPhone | Native | Safari, Files, and iBooks open PDFs. Built-in Markup tool for annotations. AirPrint to PDF supported. |
| Android | Native | Google Drive and Chrome open PDFs. Most file managers include PDF preview. Google Docs can convert to PDF. |
| Web browsers | Native | Chrome, Firefox, Safari, Edge all render PDFs inline. No plugins required since 2015. |
| Microsoft Office | Export | Word, Excel, PowerPoint all export to PDF. Office 365 also imports PDF content into Word. |
| Google Workspace | Export | Docs, Sheets, Slides export to PDF. Google Drive previews PDFs and converts to editable Google Docs. |
PDF Conversion Guides
In-depth articles on PDF conversion, formatting, and document processing