PDiff vs Spellbook

PDiff is desktop software for comparing PDF documents and identifying differences in layout, formatting and page breaks. It displays PDFs side by side, synchronizes extracted text with the pages and highlights deviations in both views. Reviewers can navigate differences, mark changes accepted, hide less relevant changes and add comments. Filtering and review tools include exclusion areas, page ranges, text-flow and table tools, replacement rules, comments and OK checkmarks.

PDiff can compare PDFs with DOC/DOCX, RTF, TXT, XLS and other common formats, converting non-PDF files through their native applications. Outputs include tabular, annotated and side-by-side PDFs, XML, CSV, PDiff project files and CLI return codes. PDiff Professional adds GUI batch processing and command-line operation. CSci Computer Science GmbH describes uses including quality assurance, regulatory compliance, contract and legal review, pharmaceutical packaging and technical documents. The software supports Unicode, including Chinese, Japanese, Korean, Arabic and Hebrew. The maker says processing is local and documents are not transferred over the internet. Business customers can request a free full-functionality trial; pricing for editions is on request.

Spellbook is software for legal teams to review contracts, draft agreements, and keep positions consistent across a deal. Its contract review identifies client risks, drafting errors, and other issues, then proposes redlines and comments in Microsoft Word. For drafting, it can create clauses and documents from scratch or from existing precedents, adapting language to the contract type, jurisdiction, party details, and writing style. Ask provides answers with citations and can search more than 1,000 vetted statutes, regulations, and legal and government databases. Teams can save review instructions as playbooks for reuse. Spellbook lists integrations with iManage, OneDrive, Dropbox, SharePoint, Google Drive, Slack, Microsoft Word, and Google Docs. It supports DOCX, PDF, DOC, TXT, XLSX, and GDOC files, and offers API access. The company states that it is SOC 2 Type II, HIPAA, GDPR, and EU AI Act compliant. It says customer data is stored and processed in cloud-provider data centers in Canada and the US, and that its agreements with OpenAI and Anthropic provide zero data retention for customer requests and responses. Pricing is on request, with a 7-day trial; there is no free plan.