Stirling-PDF

Features

• Dark mode support.
• Custom download options
• Parallel file processing and downloads
• API for integration with external scripts
• Optional Login and Authentication support (see here for documentation)
• Database Backup and Import (see here for documentation)

PDF Features

Page Operations

• View and modify PDFs - View multi page PDFs with custom viewing sorting and searching. Plus on page edit features like annotate, draw and adding text and images. (Using PDF.js with Joxit and Liberation.Liberation fonts)
• Full interactive GUI for merging/splitting/rotating/moving PDFs and their pages.
• Merge multiple PDFs together into a single resultant file.
• Split PDFs into multiple files at specified page numbers or extract all pages as individual files.
• Reorganize PDF pages into different orders.
• Rotate PDFs in 90-degree increments.
• Remove pages.
• Multi-page layout (Format PDFs into a multi-paged page).
• Scale page contents size by set %.
• Adjust Contrast.
• Crop PDF.
• Auto Split PDF (With physically scanned page dividers).
• Extract page(s).
• Convert PDF to a single page.

Conversion Operations

• Convert PDFs to and from images.
• Convert any common file to PDF (using LibreOffice).
• Convert PDF to Word/Powerpoint/Others (using LibreOffice).
• Convert HTML to PDF.
• URL to PDF.
• Markdown to PDF.

Security & Permissions

• Add and remove passwords.
• Change/set PDF Permissions.
• Add watermark(s).
• Certify/sign PDFs.
• Sanitize PDFs.
• Auto-redact text.

Other Operations

• Add/Generate/Write signatures.
• Repair PDFs.
• Detect and remove blank pages.
• Compare 2 PDFs and show differences in text.
• Add images to PDFs.
• Compress PDFs to decrease their filesize (Using OCRMyPDF).
• Extract images from PDF.
• Extract images from Scans.
• Add page numbers.
• Auto rename file by detecting PDF header text.
• OCR on PDF (Using OCRMyPDF).
• PDF/A conversion (Using OCRMyPDF).
• Edit metadata.
• Flatten PDFs.
• Get all information on a PDF to view or export as JSON