✦ 100% Free · No Signup Required

Compress PDF Online Free
Reduce PDF Size Instantly

Shrink any PDF file by up to 90% without losing readability. Powered by Ghostscript — the same engine professional publishers use. No account, no watermarks, no catch.

Use This Tool Free

Free up to 3 compressions/day · Pro plan unlocks unlimited

Reduce PDF size in 3 steps

No software to install. Works on any device — Mac, Windows, iOS, Android.

01

Upload your PDF

Drag and drop or click to select any PDF file up to 20MB.

02

Choose compression

Pick screen, ebook, printer, or prepress quality — we match the right Ghostscript setting.

03

Download compressed PDF

Your file is compressed server-side and ready to download in seconds. Files are deleted immediately after.

Better than the alternatives

Unlike SmallPDF or ILovePDF, NexTools is free up to 20 tasks/month — no forced upsell after the first file. We use Ghostscript on the server for compression that actually works, not a simple re-save. No watermarks. No account required. Your file is processed and deleted — we don't store your documents.

Common questions about PDF compression

How much can I reduce a PDF file size online?

Typical results are 40–90% reduction depending on content. PDFs with lots of high-res images compress dramatically. Text-heavy PDFs compress less but still see meaningful savings.

Does compressing a PDF reduce its quality?

It depends on the setting. "Screen" quality targets email attachments and small file size. "Ebook" balances quality and size. "Printer" keeps quality high. "Prepress" is near-lossless — minimal size reduction but maximum fidelity.

Is this PDF compressor safe to use?

Yes. Your file is uploaded over HTTPS, compressed on our server, and immediately deleted after processing. We don't store or share your documents.

What's the maximum PDF size I can compress?

Free users can compress PDFs up to 20MB. The file size limit exists to keep processing fast. If you need to compress larger files, upgrade to Pro for priority processing.

Why is my PDF still large after compression?

PDFs with embedded fonts, vector graphics, or already-compressed images won't compress much further. Try switching to a lower quality setting, or use our PDF Merger to recombine only the pages you need.

You might also like