PDFAnnotations.com is a free, browser-based tool that extracts highlights and comments from PDF files. It helps students, researchers, and educators organize notes by exporting annotations into Notion, Obsidian, Markdown, CSV, JSON, and plain text.
The tool runs locally in the browser using WebAssembly, ensuring privacy and security without uploading files to external servers. No registration is required, and it works instantly online.
Key Features
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PDF Highlight & Comment Extraction – Extract annotations from textbooks, research papers, and reports.
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Multi-format Export – Export to Markdown, CSV, plain text, or JSON.
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Annotation Editing & Deletion – Edit or remove extracted notes.
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Comment Reply Chains – Preserve threaded discussions.
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Multi-language Interface – Available in 11 languages.
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100% Local Processing – Runs entirely in the browser, ensuring zero data upload.
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Color Filtering & Grouping – Organize highlights by color.
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Notion & Obsidian Export – One-click export into PKM tools.
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Batch Multi-File Processing – Process multiple PDFs simultaneously.
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Page Range Selection – Extract annotations from specific page ranges.
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Extraction Modes – Choose exact or sentence-level extraction.
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Author Filtering – Filter annotations by author.
Educational Value
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Students can extract notes from textbooks and organize them into study tools.
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Researchers can streamline literature reviews by exporting highlights into PKM systems.
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Educators can recommend the tool to learners for efficient annotation workflows.
