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Frequently Asked Questions

DocForge optimizes the internal PDF structure using object streams and removes unnecessary metadata to reduce file size. All processing happens in your browser.
The compression is lossless — it optimizes the PDF structure without degrading text, images, or vector graphics.
Results vary by file. PDFs with embedded fonts and metadata can see 10-40% reduction. Already-optimized PDFs may see minimal savings.
No hard limit, but files over 100MB may be slow since everything runs in your browser's memory.
No. All compression happens in your browser using pdf-lib. Your file never leaves your device.

Pro Tip

For maximum compression, consider splitting large PDFs first, compressing each part, then merging them back.