Compress PDF files online while keeping them sharp and searchable. LunaFile uses Ghostscript with the /ebook profile — a balanced setting trusted for years that shrinks images and re-encodes fonts without visible quality loss.
How to use Compress PDF
- 1
Drop your PDF
Up to 50 MB. We accept any standard PDF — including scans and exports from Word.
- 2
We compress it
Ghostscript rebuilds the PDF with smaller image samples and efficient font encoding.
- 3
Download the result
You get a smaller PDF. If compression would have made it bigger, we return the original.
Common questions
Will the text stay searchable?+
Yes. Vector text is preserved as text — not flattened to image — so search and copy still work.
How much will my file shrink?+
Typically 20–60% depending on image content. Image-heavy PDFs see the biggest reduction.
Will image quality drop?+
Slightly, but not noticeably at normal viewing zoom. Images are downsampled to roughly 150 DPI.
Is this lossless?+
No — compression is lossy for embedded images. For lossless compression, use the original file or a different tool.