WhiskFile optimization tools: compress, repair, OCR, and optimize PDFs.
Reduce PDF file size with 3 presets, custom DPI & JPEG quality, or advanced options
Auto-detect and straighten crooked scanned pages with live preview and manual fine-tuning
Fix corrupted PDF files with diagnostic report — 3 repair modes, health score, and full transparency on what was fixed
Change PDF page size to A4, Letter, or custom dimensions — vector content preserved, text stays sharp and selectable
AI extracts vendor, amounts, dates, and line items from invoices
Scan receipts and extract vendor, total, date, and items
Process multiple PDFs at once — compress, convert, OCR, watermark, and more
Make scanned PDFs searchable with OCR — 35+ languages, preprocessing, confidence report
Convert color PDFs to grayscale or pure black & white with 7 algorithms
Print 2–16+ PDF pages per sheet with live preview and custom grids
Auto-rename PDFs from content with template builder, zone selector, and batch ZIP download
Get an AI-generated summary of any PDF in seconds
Ask questions about your PDF and get instant AI-powered answers with page citations
AI translates your PDF into 50+ languages with tone control and bilingual output
AI picks the optimal compression for your PDF automatically
AI corrects OCR errors and cleans up scanned text
Scan PDFs for accessibility issues — WCAG compliance check with detailed report
Automatically fix common PDF accessibility issues — title, language, bookmarks, and more
Build automated document processing pipelines — chain OCR, compress, redact, sign, and more
Compressing a PDF reduces its file size by removing redundant data, downsampling images, and optimizing the internal str…
Merging PDF files combines multiple separate PDF documents into a single file, in any order you choose. It takes under a…
Converting a PDF to a Word document (DOCX) makes the content editable in Microsoft Word, Google Docs, or any word proces…
OCR (Optical Character Recognition) converts a scanned PDF — which is just an image — into a searchable PDF with real te…
A PDF can be unexpectedly large due to high-resolution images embedded at print quality, fully embedded font files, scan…
Getting a PDF below 1MB is one of the most common PDF tasks — email attachments, web uploads, and many government portal…
