Local PDF workspace · No server upload · Browser processing

Compress PDF

Lightly optimize PDF structure in the browser using object streams. Files are processed locally in the browser when the PDF engine is loaded.

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Results will appear here after processing.

Are my PDF files uploaded?

No. This page is designed for browser-side processing. Files are loaded by your browser and are not uploaded to the 800528 server.

Why do some tools need external scripts?

PDF processing uses pdf-lib and pdf.js from a CDN. If those scripts are blocked, the page will show an engine loading error.

Does this replace professional PDF software?

No. These tools are for common browser-side PDF tasks. Results should be reviewed before production, legal or business use.