PDF Compressor

Online PDF Compressor

Compress and reduce the file size of your PDF documents by re-encoding pages client-side securely.

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Drag & drop your PDF here

supports standard PDF documents

Select PDF File
Your PDF Document
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Compression Settings
✅ Compression Completed!
ORIGINAL SIZE

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COMPRESSED SIZE

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SAVINGS PERCENTAGE

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Features

Why Use PDF Compressor?

Reduce PDF document payloads offline securely.

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Efficient Compression

Re-encodes embedded visual assets at lower resolution points to reduce files payload.

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Ratio Settings

Low, medium, and high preset compression options let you strike the perfect quality-to-size balance.

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100% Client-Side

All resizing computations execute local in browser canvas context. No server records.

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Progress Tracker

Interactive progress status bars update you during page compiling rendering sequences.

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Standard Re-Scaling

Fits and standardizes images into A4 pages during conversion for uniform displays.

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Mobile Friendly

Modern adaptive UI layout adapts cleanly across tablets, screens, and smartphones.

Frequently Asked Questions

It scales down the resolution and quality of the visual pages inside an uploaded PDF to decrease its overall file footprint.

No. The compression engine runs locally in the browser memory via JavaScript. Your document remains secure.

Low compression maintains high resolution (larger file), High compression reduces quality further for smallest size, and Medium is the optimal default.

Yes. Because the pages are rendered to images, text selection might be disabled in the output file, though visual legibility is preserved.

We use standard Mozilla PDF.js to extract pages, and jsPDF to compile the newly compressed pages back together in the browser.

No. The client-side parser cannot decrypt protected documents without the password, so they are not supported.

While there is no server limit, parsing files larger than 100MB may temporarily freeze the browser page thread.
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