Is the PDF compressor free?

Yes, 100% free with no account, no subscription, and no file limits.

Are my PDF files uploaded to servers?

No. All PDF processing uses pdf-lib JavaScript library running in your browser. Files never leave your device.

How much can I reduce a PDF?

PDFs with many images can be reduced 60–80%. Text-heavy PDFs typically reduce 10–30%. Results depend on content type.

Free PDF Compressor – Reduce PDF File Size Online Without Quality Loss

📄 PDF Compressor

100% browser-based · No uploads

Compression Level

Balanced (recommended) — best mix of size reduction and readability.

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Drop your PDF here

or click to browse — PDF files up to 50MB

Choose PDF

Supports: PDF • Max size: 50MB

Simple Process

How PDF Compression Works

Upload PDF

Select or drop your PDF — up to 50MB. No file is sent to any server.

Choose Quality

Pick High Quality, Balanced, or Maximum Compression based on your needs.

Auto Compress

pdf-lib processes your file locally — removing metadata, compressing streams, and optimising embedded images.

Download

Your compressed PDF is ready instantly. See the exact size reduction before downloading.

Why Us

Why Choose Our PDF Compressor?

🔒

100% Private Processing

Your PDF never leaves your browser. We use pdf-lib — a pure JavaScript library — for all compression. No server upload, no privacy risk.

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Instant Results

Compression completes in seconds, even for large PDFs. No waiting in queue, no email delivery — just immediate download.

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Clear Size Comparison

See exactly how much space you saved — original vs compressed size shown side by side with percentage savings displayed clearly.

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Readability Preserved

Text remains crisp and fully selectable. We compress embedded images and remove redundant metadata without touching text rendering.

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Completely Free

No file limits, no credit system, no trial period. Compress as many PDFs as you need, completely free.

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Works on All Devices

Mobile, tablet, or desktop — our PDF compressor works on any device with a modern browser. No app download needed.

Use Cases

Perfect For Every Situation

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Email Attachments

Stay under email size limits (Gmail 25MB, Outlook 20MB)

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Web Uploads

Meet strict portal file size limits for job applications and forms

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Cloud Storage

Free up Google Drive, Dropbox, and OneDrive space

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WhatsApp / Telegram

Share documents over messaging apps with file size restrictions

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Government Portals

Submit tax returns and official documents within strict limits

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Academic Submissions

Submit research papers and theses within university portal limits

Frequently Asked Questions

Is the PDF compressor completely free? +

Yes — 100% free with no account, no subscription, and no limits on the number of PDFs you can compress. We are ad-supported, which allows us to keep the tools free for everyone.

Are my PDF files uploaded to your servers? +

Absolutely not. All PDF processing uses pdf-lib, a pure JavaScript library that runs entirely in your browser. Your PDF files never leave your device, ensuring complete privacy and security.

How much can I compress a PDF? +

Results vary significantly depending on PDF content. PDFs with many high-resolution images can often be reduced by 60–80%. Text-heavy PDFs with minimal images may only reduce by 10–30%. Our tool removes redundant metadata and optimises embedded images to achieve maximum reduction.

Will text still be readable and selectable after compression? +

Yes. Our compression focuses on embedded images and metadata. Text remains fully crisp, selectable, and searchable in the compressed PDF. The document structure is fully preserved.

What is the maximum PDF file size? +

You can compress PDFs up to 50MB. Very large files (30–50MB) may take 10–20 seconds to process in the browser. For extremely large PDFs, we recommend using our Maximum Compression setting.

Can I compress a password-protected PDF? +

Our tool currently cannot process password-protected or encrypted PDFs. You would need to remove the password protection first using another tool, then compress with our service.

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