# PDF Optimize Advanced Advanced PDF optimization: remove metadata, clean structure, and recompress content > Canonical page: https://elysiatools.com/en/tools/pdf-optimize-advanced - **Category:** PDF Tools - **Keywords:** pdf, optimize, clean, metadata, compress, remove ## Overview Optimize PDF files by removing unnecessary data and cleaning document structure. **Optimization Features:** - Remove document metadata (author, title, keywords, creator, producer) - Remove embedded thumbnails - Clean document catalog and structure - Recompress content streams - Remove unused objects - Preserve page content and formatting **Common Use Cases:** - Clean up PDF metadata before sharing - Reduce file size by removing unused data - Prepare documents for archiving - Remove sensitive metadata information **Note:** This tool uses pdf-lib for optimization. For advanced image compression, consider using dedicated compression tools. ## Inputs - **PDF File** (file): Upload a PDF file - **Remove Metadata** (checkbox): Remove document metadata (author, title, keywords, creator, producer) - **Remove Object Streams** (checkbox): Remove object streams (may increase compatibility but file size may increase) - **Compress Content** (checkbox): Compress content streams during optimization ## When to use - When you need to strip sensitive metadata like author names, creation dates, and software signatures before sharing a PDF publicly. - When you want to reduce the file size of a PDF by cleaning up its internal structure, removing unused objects, and recompressing content streams. - When preparing PDF documents for long-term archiving where clean, standardized document catalogs are required. ## How it works - Upload your PDF document using the file input field. - Select your optimization preferences, such as removing metadata, removing object streams, or enabling content compression. - Click the process button to let the tool clean the document catalog, strip unused objects, and recompress the streams. - Download the optimized, clean PDF file directly to your device. ## Use cases - Cleaning legal or corporate documents to remove author history and track changes before sending them to clients. - Shrinking bloated PDF manuals or reports by removing redundant objects and compressing content streams for email attachments. - Standardizing PDF structures for digital archives to ensure long-term compatibility and clean document catalogs. ## Frequently asked questions ### What metadata is removed when I select the metadata removal option? It removes document properties such as the author, title, keywords, creator, producer, and embedded thumbnails. ### Will optimizing the PDF affect its layout or visual quality? No, the optimization process preserves all page content, text formatting, and layout structure while cleaning the underlying file data. ### What does the 'Remove Object Streams' option do? It unpacks compressed object streams, which can increase compatibility with older PDF readers, though it may slightly increase the file size. ### Does this tool compress images inside the PDF? This tool focuses on structural optimization and stream compression; it does not perform lossy downsampling of embedded images. ### Is my document data secure during the optimization process? Yes, your files are processed securely and are not stored permanently or shared with third parties. ## Related tools - [PDF Clean (PDF清理工具)](https://elysiatools.com/en/tools/pdf-clean): Remove metadata, annotations, bookmarks, and form fields from PDF files - [PDF Denoise](https://elysiatools.com/en/tools/pdf-denoise): Remove visual noise from scanned PDF pages — salt-and-pepper speckle, random grain, and faint background haze — using real image-processing algorithms. Text pages are preserved as searchable vector content. - [PDF Delete Pages](https://elysiatools.com/en/tools/pdf-delete-page): Delete specified pages from a PDF document - [PDF Header/Footer Noise Remover](https://elysiatools.com/en/tools/pdf-header-footer-noise-remover): Compare extraction with and without repeated page furniture to spot header/footer noise before using PDF text in RAG, summarization, or editing workflows - [PDF Text Extractor](https://elysiatools.com/en/tools/pdf-text-extractor): Extract text content from PDF documents with support for page selection, formatting options, and multi-language processing - [PDF Crop Pages](https://elysiatools.com/en/tools/pdf-crop-page): Crop PDF pages by removing margins from edges - [PDF Compress Optimize](https://elysiatools.com/en/tools/pdf-compress-optimize): Smart PDF optimization: image downsampling, redundant object cleanup, stream compression - [PDF to Text Advanced](https://elysiatools.com/en/tools/pdf-to-text-advanced): Advanced PDF to text converter with page selection, formatting options, and metadata extraction ## Samples - [PDF Samples](https://elysiatools.com/en/samples/pdf-samples): Generated PDF samples from tools dated 2026-02-01 to 2026-02-10 - [Markdown Slide Deck Samples](https://elysiatools.com/en/samples/md-slide-deck-to-pdf): Remark/Marp style Markdown slide decks for testing PDF export layouts - [PostgreSQL Advanced Samples](https://elysiatools.com/en/samples/postgresql-advanced): Advanced PostgreSQL database examples including optimization strategies, complex queries, indexing, and performance tuning - [RabbitMQ Advanced Samples](https://elysiatools.com/en/samples/rabbitmq-advanced): Advanced RabbitMQ configuration examples including clustering, high availability, performance tuning, and enterprise patterns ## Related content - [PDF Repair, Cleanup, and Slimming](https://elysiatools.com/en/hubs/pdf-repair-cleanup-and-slimming): Rescue a damaged PDF, strip what should not travel with it, and cut its weight — repair broken headers and cross-reference tables with diagnostics, export annotations before erasing them, remove metadata and form fields, then downsample and recompress to hit your size target.