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PDFShift

PDFShift is a browser-based PDF toolkit with 20 tools for working with PDF files. Most tools run entirely in your browser — no uploads, no servers, no privacy concerns.

Website: pdfshift.app

Free vs Pro​

  • Free (10 tools): Merge, split, compress, rotate, reorder pages, add page numbers, flatten, reverse pages, metadata editor, crop
  • Pro (10 tools, $9/month): OCR, convert to/from Word/Excel/images, e-sign, watermark, protect/unlock, redact, translate, PDF to HTML

Key Features​

  • Client-side processing — most tools never upload your file. Everything runs in the browser using pdf-lib and pdfjs-dist.
  • AI-powered Pro tools — OCR, translation, and conversion use server-side AI for accuracy.
  • Cloud history — Pro users get cloud storage for processed documents with download/delete management.
  • No file size limit on free tools — Pro tools support up to 250MB and 50 pages for OCR.

Tech Stack​

  • Next.js 16 on Vercel
  • Supabase Auth (shared with SEO Toolkit)
  • pdf-lib / pdfjs-dist for client-side tools
  • OpenAI GPT-4o for AI-powered Pro tools
  • Stripe for billing