Your PDF stays on this device
Compress a PDF
in your browser.
Select a PDF, choose a quality level, then review and explicitly download a flattened copy. The selected document is processed in browser memory and is not sent to a compression server.
This tool rasterizes and flattens every page. The new PDF keeps the page's visual appearance, but may remove searchable text and selectable text, links, forms, annotations, bookmarks, accessibility tags and document structure, metadata, and attachments. Existing digital signatures and certificate semantics are not preserved; saving a flattened copy may invalidate them. Keep your original PDF.
Drop PDFs hereTap to select PDFs
Max 50 MiB each · 300 pages · 8 MP per rendered page
Select PDFs
Add PDFs up to 50 MiB and 300 pages each. Files wait in a cancellable, one-document queue.
Flatten pages
Each page is rendered within an 8-megapixel limit, encoded as JPEG, and placed in a new PDF.
Review and download
Results up to an 80 MiB retained-output budget remain available. Nothing downloads automatically.
What flattening changes
The visual page is rebuilt
This is lossy rasterization, not structural PDF optimization. Every page becomes a JPEG image. Fine vectors can soften and colors may change slightly depending on the browser.
Document semantics may be removed
Searchable/selectable text, links, forms, annotations, bookmarks, accessibility tags and structure, metadata, and attachments may not survive in the output.
Signatures are not preserved
Existing certificate-backed or digital signatures can become invalid because the bytes are rebuilt. The new file does not preserve prior certificate or signature semantics. Keep the original.
File-local, not page-network-free
Your selected PDF and generated output stay in browser memory. The page can still request ordinary site assets and disclosed analytics, consent, or advertising services; those services are separate from document processing and do not receive the selected PDF from this tool.
FAQ
- Is my PDF uploaded?
- No. The selected PDF is read, rendered, rebuilt, and retained in your browser. The page may load normal disclosed site services, but this compression workflow does not upload your document bytes.
- Will text, links, or forms still work?
- Do not rely on them. Pages are flattened into images, so selectable/searchable text, links, forms, annotations, bookmarks, accessibility structure, metadata, and attachments may be removed.
- What happens to an existing digital signature?
- Rebuilding the PDF changes its bytes and can invalidate an existing certificate-backed signature. Prior signature and certificate semantics are not preserved. Keep and use the original when signature validity matters.
- What are the limits?
- A PDF may be up to 50 MiB and 300 pages. Each rendered page is limited to 8 megapixels, all documents process one at a time, and retained PDF outputs share an 80 MiB budget.
- Why can the output be larger?
- Text- and vector-heavy PDFs are often compact already. Rasterizing those pages can increase size. The tool retains an admitted larger result with a clear warning and waits for you to choose whether to download it.
- Can I compress an encrypted PDF?
- No. Remove the password or encryption in a trusted PDF application, save a new local copy, and then try that copy.
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