DiffDuo is a free online diff checker that compares two texts, files or code snippets directly in your browser. It shows removed lines in red, added lines in green and highlights the exact words that changed, in either a side-by-side split view or a git diff-style unified view.
claude.ai 내에서 포토리얼리스틱 이미지나 동영상 생성 기능은 기본 제공되지 않음(SVG, 코드 차트, 다이어그램으로 제한)
–무료 등급은 Claude Code를 포함하지 않으며 장문 컨텍스트 대화에서 5시간 롤링 메시지 한도에 빠르게 도달합니다
–Opus 5.5나 Claude Code에 크게 의존하는 Pro 사용자(월 $20)도 5시간 롤링 한도를 소진해 Max(월 $100)가 필요할 수 있습니다
DiffDuo
DiffDuo is a free online diff checker that compares two texts, files or code snippets directly in your browser. It shows removed lines in red, added lines in green and highlights the exact words that changed, in either a side-by-side split view or a git diff-style unified view.
Split and unified views
Read changes in two columns side by side, or switch to a single-column unified diff in the same format as git diff and patch files.
Word-level highlighting
Darker highlights mark the exact words and characters that changed inside a modified line, not just the lines that differ.
Local, private processing
The comparison runs entirely in your browser, so confidential code, contracts and config files never leave your device.
Whitespace and case tolerance
Ignore whitespace, indentation and capitalisation differences, and control how much unchanged context is shown around each change.
강점 및 장점
+Runs fully in the browser, so sensitive text and code are never uploaded
+Free with no sign-up, no usage limits and no advertising
+Word-level highlighting makes edits inside a line easy to spot
+Unified view matches git diff and patch format, including hunk headers
+
Handles large files, including files with 100,000+ lines, without freezing the page
+Interface available in many languages
한계
–Limited to plain-text comparison, with no semantic or AI-based code review
–No account, saved history or team collaboration features
–Requires JavaScript to be enabled in the browser
–No desktop or command-line client, so it is a manual copy-and-paste workflow
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