Will Compress PDF Lossless reduce quality?

Compression may reduce image detail or remove unused data depending on the profile. Review the output before replacing the original PDF.

What compression ratio will Compress PDF Lossless achieve?

SnapPDF does not guarantee a fixed compression ratio. The final size depends on images, fonts, structure, and whether the PDF was already optimised.

How does Compress PDF Lossless handle images?

Image handling depends on the compression profile. SnapPDF may recompress, resize, or leave images unchanged to preserve readability.

Does Compress PDF Lossless preserve metadata?

Metadata preservation depends on the compression path. Check the downloaded PDF if document properties or embedded metadata matter.

Can I recompress an already compressed PDF?

Yes, but a PDF that is already optimised may shrink little or not at all. Recompression can also reduce visual quality.

← All tools

311 / COMPRESS · COMPRESS · NO SIGNUP

Compress PDF Lossless.

Shrink your PDF without trashing quality — Lossless profile dialled in for the use case. Files leave your machine only for processing; nothing stored after the download link expires.

Drop a PDF here.

Click to pick, or drag files here · .pdf,application/pdf

FREE TIER: 5 / DAYFILE CAP: 25 MBPROCESSED: VERCEL EDGENEED MORE? GO PRO · $9/MO

Upload your PDF
SnapPDF analyses images, fonts, and structure
Unnecessary data is stripped while preserving readability
Download the smaller PDF

Processed on our servers — files deleted after download

Frequently asked questions

Related tools

SNAPPDF API

Automate PDF compression with the API

Integrate this operation into your workflow. REST API with typed SDKs in 5 languages. Generous free tier.

View API docs →See pricing

30-day refund policy on all paid plans

Compress PDF Lossless.

Frequently asked questions

Related tools

Compress PDF Quality 90

Compress PDF Quality 75

Compress PDF Quality 50

Compress PDF Quality 25

Compress PDF Images Only

Automate PDF compression with the API