Is this PDF compressor really free?

Yes, completely free. No daily limits, no file size caps (up to 1GB), no signup, no watermarks on output. The tool is ad-supported, so there is no need for premium subscriptions.

What is the best free PDF compressor?

PDF Smaller is a top free PDF compressor because it offers unlimited compressions, handles files up to 1GB, processes everything in your browser for privacy, and never adds watermarks. Unlike competitors, there are no premium tiers or daily limits.

How do I compress a PDF without paying?

Open our free PDF compressor, drag your PDF file in, select a compression level, and download the smaller file. No payment, no signup, no email required. Works instantly in your browser.

Is the free PDF compressor safe for confidential documents?

Yes. All compression happens in your browser — your files are never uploaded to any server. This makes it safe for tax documents, medical records, legal contracts, and other sensitive files.

100% Free — No Catches

Free PDF Compressor

Compress PDF files for free with no limits, no signup, and no watermarks. Your files never leave your device.

Compress PDF Free

No email • No account • No credit card • Just compress

What "Free" Actually Means Here

Most "free" PDF compressors are free trials in disguise. Here's what makes PDF Smaller different:

What We Don't Do

Limit you to 1-2 files per day
Ask for your email or credit card
Add watermarks to your output
Upload your files to our servers
Cap file sizes at 5MB or 10MB

What You Actually Get

Unlimited compressions per day
Files up to 1GB each
Batch compress up to 10 files at once
100% private — browser-only processing
No account needed — just open and compress

Try It Now — It's Actually Free

How to Compress PDF for Free

Open the Compressor

Go to our PDF compressor. No signup, no login — the tool is ready to use immediately.

Drop Your PDF Files

Drag one or more PDFs (up to 10 at once). Files are processed entirely in your browser — nothing is uploaded anywhere.

Download Compressed PDFs

Get your smaller files instantly. No watermarks added, no quality text "trial" — you get the full compression, free, every time.

How Can This Be Free?

Most PDF tools charge because they run servers to process your files. Their costs scale with every user.

PDF Smaller works differently. All compression happens in your browser using your computer's processing power. We don't need expensive servers because we never touch your files.

Our site is supported by ads, which means we can offer unlimited, truly free PDF compression to everyone — no premium tiers, no artificial limits.

Who Uses Our Free PDF Compressor?

Students & Teachers

Submit assignments, share lecture notes, and reduce thesis PDFs for upload portals. No budget for paid tools? No problem.

Job Seekers

Shrink resumes and portfolios for ATS systems with 2-5MB file limits. Compress without losing formatting.

Small Businesses

Send invoices, contracts, and proposals via email without hitting attachment limits. Free means no software budget needed.

Visa & Immigration Applicants

Government portals have strict file size limits (100KB-2MB). Compress passports, bank statements, and supporting documents for free.

Free AND Private

"Free" usually means you're the product. Not here. Your PDFs are processed entirely in your browser and are never sent to any server. We literally cannot see your files.

Safe for tax documents, medical records, legal contracts, and any sensitive files.

Compress Your PDFs for Free

No signup. No limits. No watermarks. No catches. Just free PDF compression.

Compress PDF Now — Free