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Compress PDF File Online Free – Reduce Size Quickly
📦 Compress PDF  ·  Free Forever  ·  No Uploads  ·  Instant

Compress PDF File
Reduce Size Quickly

Shrink your PDF file size in seconds with 4 compression levels. Choose from Screen to Maximum — all 100% free, browser-based, and completely private.

4
Compression Levels
100%
Free Forever
0
Server Uploads
⚡
Instant Result
Levels: 🟢 Screen – Light 🔵 eBook – Moderate 🟠 Printer – Strong 🔴 Maximum – Aggressive

📦 PDF Compressor – Start Here

Choose your compression level, upload your PDF, select options, and download your smaller file in seconds.

⚙️ Step 1 — Choose Compression Level
🟢
Screen
Light
Removes redundant objects. Safe for all PDFs. Smallest change in visual quality.
🔵
eBook
Moderate
Strips metadata, annotations and unused resources. Good for digital sharing.
🟠
Printer
Strong
Removes embedded fonts, extra data, and flattens structure aggressively.
🔴
Maximum
Aggressive
Everything stripped. Best size reduction. May affect complex formatting.
💡 Screen: Lightly compresses object structure and removes unused references. Ideal for all documents when you want minimal quality impact.
🔧 Step 2 — Compression Options
📂 Step 3 — Upload Your PDF
📦

Drag & Drop your PDF here

or click to browse from your device — any size supported

✅ PDF files only  ·  Any file size  ·  Never uploaded to any server

📄 Your PDF File
📭

No PDF uploaded yet!

Choose your compression level above, then upload your PDF to compress it

Why Use This Tool

Fast PDF Compression
Built for Everyone

No slow server queues, no file size caps, no watermarks. Your PDF is compressed instantly in your browser.

⚡
Instant Compression
All processing runs locally in your browser using pdf-lib. No waiting for server queues — results in seconds.
🎚️
4 Compression Levels
From Screen (light) to Maximum (aggressive) — choose the right balance between file size and document quality.
🛡️
100% Private
Your PDF never leaves your device. Zero server uploads, zero cloud processing, zero privacy risk — ever.
🔧
Extra Options
Optionally strip metadata, remove annotations, use object streams, or flatten form fields for extra size savings.
📊
Before & After Stats
See original size, compressed size, reduction percentage, and a visual size comparison bar after every compression.
🚫
No Watermarks
Your compressed PDF is completely clean — no added pages, no branding, no watermarks added anywhere.
♾️
No File Size Limits
Compress files of any size. Only your device's available memory sets the practical limit — typically hundreds of MB.
📱
Works Everywhere
Fully responsive on desktop, tablet, and mobile. Use on Chrome, Firefox, Safari, or Edge — any modern browser.
Simple Process

Compress Any PDF in 3 Steps

From upload to compressed download in under a minute, no matter the file size.

1
Choose a Level
Select one of 4 compression levels — Screen, eBook, Printer, or Maximum — depending on how much you want to shrink the file.
2
Upload & Configure
Drag and drop your PDF and tick any extra options like removing metadata, annotations, or flattening form fields.
3
Download & Compare
Click Compress, see a before/after size comparison, and download your smaller PDF file instantly to your device.
Compression Levels

Which Level Should You Choose?

Each level applies progressively more aggressive compression techniques to your PDF.

Level What It Does Best For Quality Impact
🟢 Screen Removes unused objects, cleans redundant references, re-saves with object streams General documents, contracts, reports Minimal — barely noticeable
🔵 eBook Screen + strips metadata, removes unused pages and extra annotations Digital distribution, email sharing Very low — no visual difference
🟠 Printer eBook + flattens forms, removes embedded fonts subset data Archiving, internal sharing Low — text remains sharp
🔴 Maximum Everything above + strips all optional metadata, annotations, form data Maximum size reduction priority Moderate — complex layouts may shift
FAQ

Frequently Asked Questions

Everything you need to know about compressing PDF files online for free.

Is this tool really free?
Yes — completely free, no subscription, no account, no limits. You can compress as many PDFs as you like at any time.
Are my files sent to a server?
No. Everything runs in your browser using JavaScript. Your file is never uploaded, stored, or processed anywhere outside your device.
Why isn't my file getting much smaller?
Browser-based compression focuses on structural optimisation. PDFs with mostly text compress less than image-heavy ones. Try Maximum level with all options enabled for best results.
Will compression damage my PDF?
Screen and eBook levels are completely safe for all documents. Printer and Maximum levels may affect complex layouts or embedded fonts but will not corrupt the file.
Can I compress password-protected PDFs?
Yes. The tool attempts to load encrypted PDFs with ignoreEncryption enabled. If the PDF is locked with restrictions, results may vary.
Does it work on mobile?
Yes. All features are fully responsive and work on smartphones and tablets using Chrome, Firefox, or Safari on iOS and Android.