# DocForge — Complete Reference

Free online PDF tools: merge, split, compress, convert to images, add watermarks, rotate pages, add page numbers, and more. All processing happens in your browser — files never leave your device.

Last updated: 2026-10-16T18:19:25.352Z

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## Merge PDF
Combine multiple PDF files into one document.
- URL: https://pdf.thicket.sh/merge
- Inputs: 2+ PDF files (drag-and-drop to reorder), optional filename
- Outputs: single merged PDF with pages in specified order
- Limits: client-side processing — typical limit is 100MB total
- Use cases: combining reports, assembling book chapters, merging scanned pages

## Split PDF
Extract pages or page ranges from a PDF.
- URL: https://pdf.thicket.sh/split
- Inputs: PDF file, page selection (individual pages, ranges like 1-5, or all-split)
- Outputs: one PDF per page range, or individual pages as separate PDFs
- Use cases: extracting chapters, separating invoice pages, isolating specific content

## Compress PDF
Reduce PDF file size.
- URL: https://pdf.thicket.sh/compress
- Inputs: PDF file, compression level (screen/ebook/printer/prepress)
- Outputs: compressed PDF with size reduction percentage shown
- Method: optimizes structure, removes redundant objects, optionally resamples images
- Use cases: email attachments, web uploads, archiving

## PDF to Image
Convert PDF pages to image files.
- URL: https://pdf.thicket.sh/pdf-to-image
- Inputs: PDF file, output format (PNG/JPG), DPI/quality setting, page selection
- Outputs: image files, one per PDF page, in a ZIP archive or individually
- Use cases: creating thumbnails, extracting diagrams, sharing specific pages

## Image to PDF
Convert images into a PDF document.
- URL: https://pdf.thicket.sh/image-to-pdf
- Inputs: JPG/PNG/WebP files (multiple supported, drag-to-reorder), page size (A4/Letter/original)
- Outputs: single PDF with all images as pages
- Use cases: scanning to PDF, creating photo books, combining screenshots

## Rotate PDF
Rotate PDF pages by any standard angle.
- URL: https://pdf.thicket.sh/rotate
- Inputs: PDF file, rotation amount (90°, 180°, 270° clockwise), page selection (all or specific pages)
- Outputs: PDF with rotated pages
- Use cases: fixing upside-down scans, correcting orientation

## Add Watermark
Stamp text watermarks on PDF pages.
- URL: https://pdf.thicket.sh/watermark
- Inputs: PDF file, watermark text, font size, opacity (0-100%), color, position (center/diagonal/corner), page selection
- Outputs: watermarked PDF
- Use cases: marking drafts, adding confidentiality notices, branding

## Page Numbers
Add page numbers to a PDF.
- URL: https://pdf.thicket.sh/page-numbers
- Inputs: PDF file, position (header/footer, left/center/right), format (1, Page 1, 1/10, etc.), starting number, font size
- Outputs: PDF with page numbers added
- Use cases: reports, academic papers, legal documents

## Unlock PDF
Remove password protection from a PDF.
- URL: https://pdf.thicket.sh/unlock
- Inputs: password-protected PDF, owner or user password
- Outputs: unlocked PDF (password removed)
- Note: requires the correct password — cannot bypass encryption
- Use cases: removing password from owned documents, batch processing unlocked PDFs

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## Technical Details

### PDF Processing Library
All tools use pdf-lib (JavaScript/TypeScript), processing entirely client-side:
- PDF specification: PDF 1.7 and earlier
- Maximum practical file size: ~100MB (browser memory dependent)
- No server uploads — files never leave your device

### Supported Input Formats
- PDF (.pdf) — for all PDF tools
- Images (.jpg, .jpeg, .png, .webp) — for Image to PDF tool

### Output Quality
- Lossless operations (merge, split, rotate, page numbers, watermark): No quality loss
- Compress: Quality vs. size tradeoff based on selected level
- PDF to Image: DPI-dependent quality (72-300 DPI selectable)

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## About DocForge

- Free to use with no sign-up required
- 100% client-side — no files leave your browser (privacy-first)
- 9 PDF processing tools
- Powered by pdf-lib (open-source PDF manipulation)
- Mobile-friendly responsive design
- API available at https://pdf.thicket.sh/api/llm for structured JSON data
- Full tool index at https://pdf.thicket.sh/llms.txt