Compress PDF structure without changing image quality, or choose JPEG optimization for image-heavy documents. Files never leave your device.
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Compress without sending your document away
NearPDF runs in a browser worker. It optimizes PDF structure and optionally compatible JPEG images while keeping text, page dimensions and form fields. It does not turn your pages into screenshots.
So funktioniert es
Choose Compress PDF and add your original PDFs.
Keep original quality, or choose an optional JPEG optimization mode.
Press Compress PDFs. Processing runs on your device; original files are not overwritten.
Check the before/after sizes and download the PDF, or ZIP for multiple files.
What stays, and what changes
Compression keeps the original document structure rather than copying pages, so text, links, bookmarks and form fields are retained. Page edits in the workspace are not applied in compression mode. JPEG optimization skips masks, unusual color spaces and oversized images instead of risking changes. Signed and encrypted files are rejected. Compression is not sanitization and does not remove PDF scripts or attachments.
Will every PDF get smaller?
No. Already optimized PDFs and PNG-based scans may not shrink. When the result is not smaller, NearPDF keeps the original bytes and reports no reduction.
Does compression reduce quality?
Keep original quality changes PDF structure only. JPEG optimization reduces the resolution and quality of compatible embedded photographs; text is not rasterized. Check the result before submitting it.
Can I compress several PDFs together?
Yes. Every original is optimized separately and packed into one ZIP. Files are not merged; their names are prefixed to prevent collisions.
Funktioniert es offline?
Sobald die Seite geladen ist, findet die gesamte Verarbeitung lokal in Ihrem Browser statt.
Each original PDF is compressed separately; page edits are not applied. Image modes reduce compatible JPEG quality/resolution, not text. PNG scans may not shrink. Multiple files download as ZIP.
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