Differino vs Document Delta

Differino compares PDF, DOCX, and TXT documents and displays changes side by side. Users can review revisions in visual or text comparison modes. For scanned or image-based PDFs, OCR-assisted extraction and rendered page differences help surface changes. Each file can be up to 45 MB. The free plan includes one comparison, 24-hour share links, watermarked PDF exports, and 14-day retention for uploads and results. One-time credit packs provide additional comparisons with no-expiry credits and watermark-free exports; Pro items are retained for 365 days. The service also offers a REST API and an MCP server for Claude, Cursor, and other compatible clients. Differino states that data in transit is encrypted with TLS 1.3 and stored data with AES-256. It describes use cases including contract review for legal and business teams, and report review for finance, audit, and operations. The finance page says it focuses on document comparison rather than native spreadsheet diffing.

Document Delta compares two DOCX files and returns a document marked with Word's native tracked changes. Its web workflow is upload, compare, and download, with no signup required. The comparison covers paragraphs, tables, headers, footers, text boxes, content controls, and characters, detecting insertions, deletions, and formatting changes at run and character level. It can identify bold, italic, underline, font, and style changes even when the wording is unchanged. Reviewers can accept, reject, or comment on the revisions in Microsoft Word. The service also offers a REST API that compares two Word documents in one HTTP request without an SDK or API key, with examples for C#/.NET, Python, JavaScript, PowerShell, and Java. Files are processed in memory and discarded when comparison finishes. The free demo costs nothing. Each API file is limited to 500 KB, and the public API allows 10 requests per hour per IP address. The free comparison tool is in beta and actively improving.