Are my PDF files uploaded to a server?

No. Lumli PDF Tools runs directly in your browser, so selected PDFs and images stay on your device during compression, merging, splitting, and conversion.

How does PDF compression work?

The compressor renders each PDF page locally and rebuilds the document with compressed page images. This is most effective for scanned PDFs, receipts, image-heavy documents, and photo-based PDFs.

Can I merge and split PDFs locally?

Yes. Lumli can merge multiple PDFs into one file, extract custom page ranges, or split every page into separate PDFs packed in a ZIP file without server processing.

Will compressed PDFs keep selectable text?

Compression currently rasterizes pages, so selectable and searchable text may become image text. This tradeoff can create stronger size reduction for scanned and image-heavy PDFs.

Free PDF Tools Online | Compress, Merge, Split, Convert

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