n8n-nodes-pdf-api-hub

The most powerful PDF toolkit for n8n — 30+ operations, one node.

Turn any webpage into a PDF, sign documents, extract tables to Excel, OCR scanned pages, merge/split/compress PDFs, and much more — all inside your n8n workflows.

🔑 Get your free API key →

🚀 Install

1. In n8n, go to Settings → Community Nodes
2. Click Install a community node
3. Enter: n8n-nodes-pdf-api-hub
4. Click Install

Official guide: n8n Community Nodes Installation

🔑 Get your API key

1. Go to pdfapihub.com and sign up (free tier available)
2. Copy your API key from the dashboard

📖 Full API docs: pdfapihub.com/docs

🔐 Set up credentials in n8n

1. In n8n, go to Credentials → New
2. Search for PDF API Hub API
3. Paste your API key → Save

That's it! The node handles everything automatically.

✨ What you can do

| # | Resource | Operations | What it does | |---|----------|-----------|-------------| | 1 | HTML / URL to PDF | HTML to PDF, URL to PDF | Render HTML or capture any webpage as a pixel-perfect PDF with custom paper size, margins, fonts, and viewport | | 2 | Sign PDF | Sign PDF, Add Watermark | Stamp a signature image or overlay text/logo watermarks on every page | | 3 | Screenshot to Image | URL to Image, HTML to Image | Capture full-page screenshots or render HTML to PNG with retina support | | 4 | OCR | PDF OCR, Image OCR | Extract text from scanned documents and photos — supports English, Portuguese, Russian, and custom languages | | 5 | Extract Text & Tables | Parse PDF | Pull text, tables, or structured layout data from any PDF | | 6 | PDF to Excel & More | PDF → XLSX, CSV, DOCX, TXT, HTML, PPTX | Convert PDFs into editable spreadsheets, Word docs, presentations, and more | | 7 | Merge / Split | Merge PDF, Split PDF | Combine multiple PDFs or split one into pages, ranges, or equal chunks | | 8 | Compress PDF | Compress PDF | Shrink file size with 4 compression levels (low → max) | | 9 | Protect / Unlock | Lock PDF, Unlock PDF | Add AES-256 encryption with granular permissions, or remove password protection | | 10 | Scrape Website | Fetch HTML | Get fully-rendered HTML from any URL using a headless browser — perfect for SPAs | | 11 | Images to PDF | PNG/JPG/WebP to PDF | Combine images into a PDF with page size, orientation, and fit mode options | | 12 | PDF to Image | PDF to PNG/JPG/WebP | Render PDF pages as images with DPI, resize, and background color control | | 13 | Compare Documents | Similarity Check | Compare two PDFs or images for visual similarity | | 14 | File Management | Upload, List, Delete | Manage your cloud-stored files |

📖 Operations in detail

1. HTML / URL to PDF

Convert HTML or capture any webpage as a PDF.

| Parameter | Description | |-----------|-------------| | HTML Content | Your HTML template (supports {{placeholders}}) | | CSS Content | Optional CSS injected before rendering | | URL | Any public webpage URL | | Paper Size | A0–A6, Letter, Legal, Tabloid, Ledger | | Orientation | Portrait / Landscape | | Margins | None, Small, Medium, Large, or Custom (px/mm/cm/in) | | Viewport Size | Standard, Laptop, Desktop, Mobile, Tablet, or Custom | | Output Format | URL (hosted 30 days), Base64, or Binary File | | Load Google Fonts | Pipe-separated font names (e.g. Roboto|Inter) | | Dynamic Params | Key/value pairs for {{placeholder}} substitution | | Cookie Accept Text | Auto-click cookie consent popups (URL mode) | | Wait Until | Fully Loaded, DOM Ready, Network Quiet, or First Response | | Advanced | Print background, header/footer, CSS page size, max pages, navigation timeout |

2. Sign PDF & Watermark

Sign PDF — stamp a signature image onto your documents.

| Parameter | Description | |-----------|-------------| | PDF Input | URL, Base64, or Binary File | | Signature | Image URL or Base64 (PNG/JPG/WebP, transparent PNGs supported) | | Page | Specific page number, or sign all pages | | Position | Bottom Right, Bottom Left, Center, Top Right, etc. | | Advanced | Custom X/Y coordinates, width/height, opacity |

Add Watermark — overlay text or a logo across every page.

| Parameter | Description | |-----------|-------------| | Watermark Text | Any text (default: CONFIDENTIAL) | | Opacity | 0 (invisible) to 1 (fully opaque) | | Position | Center, Top/Bottom Left/Right/Center | | Mode | Single placement or Tiled (repeats diagonally) | | Advanced | Text color, font size, image watermark URL |

3. Screenshot Website to Image

Capture webpages or render HTML as PNG images.

| Parameter | Description | |-----------|-------------| | URL / HTML | Webpage URL or HTML content | | Output Format | URL, Base64, Both (URL + Base64), or Binary File | | Image Size | Width × Height in pixels (HTML mode) | | Viewport | Desktop, Laptop, Mobile, Tablet, or Custom | | Full Page | Capture the entire scrollable page (URL mode) | | Cookie Accept | Auto-dismiss consent popups | | Advanced | Device scale factor (2× for retina), quality (30–100) |

4. OCR — Read Scanned PDFs & Images

Extract text from scanned documents using Tesseract OCR.

| Parameter | Description | |-----------|-------------| | Input | URL or Binary File (PDF or Image) | | Language | English, Portuguese, Russian, or custom code (e.g. eng+hin) | | Pages | All, single page, range (1-3), or mixed (1,3,5-8) | | Detail Level | Text Only, or Words + Bounding Boxes | | Response Format | JSON (structured) or Plain Text | | Advanced (PDF) | DPI (72–400), character whitelist, PSM, OEM | | Advanced (Image) | Grayscale, sharpen, binarization threshold, resize scale |

5. Extract PDF Text & Tables

Pull structured data from any PDF — no OCR needed for digital PDFs.

| Parameter | Description | |-----------|-------------| | Input | URL or Binary File | | Parse Mode | Text Only, Layout (with bounding boxes), Tables, or Full | | Pages | All or specific page selection |

6. PDF to Excel / CSV / Word / PowerPoint

Convert PDFs into editable formats.

| Operation | Output | Description | |-----------|--------|-------------| | PDF to Excel (XLSX) | .xlsx | Tables extracted into spreadsheet — one sheet per page | | PDF to CSV | .csv | Table data in CSV format | | PDF to Word (DOCX) | .docx | Editable Word document with optional page selection | | PDF to Text | .txt | Plain extracted text | | PDF to HTML | .html | Styled HTML document | | PDF to PowerPoint | .pptx | Each page becomes a slide | | Document to PDF | .pdf | Convert DOCX, PPTX, XLSX, CSV, TXT, ODT → PDF |

All operations support: URL / Binary File input, URL / Base64 / Binary output, optional page selection, and custom output filename.

7. Merge / Split PDF

Merge — combine multiple PDFs into one.

| Parameter | Description | |-----------|-------------| | Input | PDF URLs (Google Drive links supported) or Binary Files | | Output Format | URL, Base64, or Binary File | | Output Filename | Custom name for the merged file | | Advanced | PDF metadata (title, author, subject, keywords) |

Split — break a PDF into parts.

| Parameter | Description | |-----------|-------------| | Split Mode | Each Page, Specific Pages (1-3,5,8-), or Equal Chunks (2–100) | | Output | URL (individual + ZIP), Base64 (ZIP), or Binary (ZIP) |

8. Compress PDF

Reduce file size with configurable compression.

| Parameter | Description | |-----------|-------------| | Compression Level | Low, Medium, High (default), or Max | | Output Format | URL, Base64, or Binary File |

💡 URL/Base64 responses include compression statistics — original size, compressed size, ratio, and bytes saved.

9. Protect / Unlock PDF

Lock — add password protection with enterprise-grade encryption.

| Parameter | Description | |-----------|-------------| | Password | Required to open the PDF | | Advanced | Owner password, encryption (AES-256/128, RC4), 8 granular permissions (print, copy, modify, annotate, forms, extract, assemble, high-res print) |

Unlock — remove password protection using multiple decryption engines.

10. Scrape Website HTML

Fetch fully-rendered HTML from any URL using a headless browser.

| Parameter | Description | |-----------|-------------| | URL | Any public webpage | | Wait Until | Fully Loaded, DOM Ready, Network Quiet, or First Response | | Wait for Element | CSS selector to wait for (great for SPAs) | | Extra Delay | Additional milliseconds after page load | | Viewport | Desktop, Laptop, Mobile, Tablet, or Custom | | Advanced | Navigation timeout, custom User-Agent, extra HTTP headers |

11–12. Images ↔ PDF

Images to PDF — combine images into a document.

| Parameter | Description | |-----------|-------------| | Page Size | Original (match image), A3, A4, A5, Letter, Legal, Tabloid | | Fit Mode | Fit (preserve aspect), Fill (may crop), Stretch, or Original | | Orientation | Portrait / Landscape | | Margin | 0–200 points padding |

PDF to Image — render pages as PNG, JPG, or WebP.

| Parameter | Description | |-----------|-------------| | DPI | 72–300 (higher = sharper) | | Quality | 1–100 (JPG/WebP) | | Advanced | Resize width/height, background color for transparent PNGs |

13. Compare Documents

Check visual similarity between two PDFs or images.

| Parameter | Description | |-----------|-------------| | Input | Two URLs, two Base64 strings, or two Binary Files | | Method | Auto (default), Feature Match, SSIM, or PHash |

14. File Management

Manage files in your cloud storage.

| Operation | Description | |-----------|-------------| | Upload File | Upload any file — returns hosted URL (auto-deleted after 30 days) | | List Files | List all your uploaded files (newest first, limit 1–500) | | Delete File | Delete a file by URL (ownership enforced) |

🔌 How output formats work

Most operations let you choose how to receive the result:

| Format | Best for | What you get | |--------|---------|-------------| | URL (Hosted Link) | Sharing, webhooks, storing | A downloadable URL — file hosted for 30 days | | Base64 (Inline Data) | Embedding in emails, chaining nodes | The file as a base64 string inside JSON | | Binary File | Piping to Google Drive, S3, Email, etc. | Raw binary data you can pass to any n8n file node |

💡 Tip: Choose Binary File when you want to pass the output directly to nodes like Write Binary File, Google Drive, AWS S3, or Send Email.

💬 Support & resources

• 🔑 Get API key: pdfapihub.com
• 📖 API documentation: pdfapihub.com/docs
• 🐛 Report a bug: GitHub Issues
• 💬 Questions: [email protected]

📄 License

MIT