Compress PDF online, free
Large PDFs are slow to email and upload. PlinyPDF compresses your PDF with a compression level you control — from smallest file to highest quality — and never returns a file larger than the original.
Free to use, with no watermark on the result.
Frequently asked questions
Will compression reduce the quality?
You choose the level. Balanced is recommended; Maximum keeps quality high. We never inflate a file that is already optimized.
Is there a file-size limit?
Each tool shows its limit before you upload. A free account raises the limit.
Is it free?
Yes — compressing and downloading are free, with no watermark.