PDF Compare
Compare two PDF documents and highlight differences
Drag & drop PDF here
or click to browse (multiple files)
Files are deleted automatically after 1 hour
About PDF Compare
PDF Compare analyses two versions of a PDF document and produces a report highlighting everything that changed between them — added text, deleted text, moved content, and changed formatting. This is an essential tool for document review workflows: comparing contract drafts before signing, reviewing edited research papers, checking revised legal pleadings, validating document versions in quality control, and confirming that a translated document matches the original structure. In professional settings, manually comparing two document versions is tedious and error-prone — a single missed change in a contract can have significant consequences. PDF comparison automates this process, flagging every difference so reviewers can focus on evaluating the changes rather than hunting for them. Law firms compare contract redlines. Publishers compare galley proofs to manuscripts. Regulatory teams compare current and revised compliance documents. Our comparison tool works at the text level — comparing the extracted text content of each page. Added content is highlighted in green, deleted content in red, and unchanged content is shown in grey. The output is a visual comparison report showing both documents side by side with differences clearly marked. Upload the original as the first file and the revised version as the second.
How to use PDF Compare
Upload two PDF files
Upload the original PDF as the first file and the revised version as the second file.
Click Compare
Click 'Compare PDFs'. The tool analyses both documents and generates a difference report.
Review differences
Download the comparison report. Added text is highlighted in green, deleted text in red. Review all differences before accepting the revision.