How much smaller will my PDF get?

Scanned documents and image-heavy PDFs often shrink 60–90% on Balanced. Already-optimized or text-only vector PDFs may shrink little — the tool compares sizes and tells you honestly.

Is the text still selectable?

No — compressed pages are images. That is how page-level compression works everywhere. Keep your original if you need selectable text or searchability.

Is there a file size or daily limit?

None from us. The practical limit is your device's memory — most laptops handle multi-hundred-page documents comfortably.

PDF Compressor

Popular100% In-Browser

Shrink PDF file size up to 90% — Light, Balanced, or Strong compression, right in your browser with no upload and no task limits.

Select a PDF file

PDF documents only · processed 100% in your browser · max 100MB

100% In-Browser • Files are processed 100% locally

Compression level:

Pages are re-encoded locally — your document never leaves the browser. Output pages are images, so text is no longer selectable.

Zero Data Collection

Files are processed 100% locally

Instant Client-Side Speed

Zero network upload delays

Free & Unlimited

No registration or credit card needed

Compress PDF Files Free — No Upload, No Limits, No Watermark

Most "free" PDF compressors cap you at two documents a day, stamp a watermark on the result, or quietly upload your contracts to a processing server. This one re-encodes your PDF entirely inside your browser — pick Light, Balanced, or Strong, and download the smaller file immediately. No sign-up, no task counter, no watermark, and your document never leaves the device.

How it works: bloated PDFs are usually bloated because of huge scanned images or uncompressed page streams. Each page is re-rendered through your browser's own JPEG encoder at a quality you choose and rebuilt into a clean PDF — the same trick commercial tools use, minus the server farm. Document metadata (author, producer app) is dropped along the way.

Honest limits: output pages are images, so text is no longer selectable, and a PDF that is already efficiently encoded may barely shrink — the tool tells you when that happens instead of hiding it. For signing or further editing, use the PDF editor on the original.

Frequently Asked Questions

Everything you need to know about using PDF Compressor safely and efficiently.

No. Rendering and re-encoding happen inside your browser tab. You can compress files with your Wi-Fi switched off.

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