Reduce file size instantly. Optimize PDFs for email attachments, web uploads, and archives without losing quality.
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Secure Client-Side ProcessingOriginal Size: 0 MB
Lowest quality, max reduction. Good for drafts.
Good quality, medium reduction. Standard choice.
High quality, slight reduction. For printing.
Your file is ready for download.
In today's digital world, handling documents efficiently is crucial. Whether you are a student submitting an assignment, a professional emailing a report, or a job seeker uploading a resume, encountering file size limits is a common frustration. Compressing PDF files is the best solution to ensure your documents are easy to share, upload, and store without sacrificing readability.
PDFs (Portable Document Format) are the standard for document sharing because they preserve formatting across all devices. However, this preservation often comes at a cost: file size. High-resolution images, embedded fonts, and uncompressed metadata can bloat a PDF to 10MB, 20MB, or even 100MB+.
Our tool uses a smart "rasterization" technique to optimize your document. Unlike simple text-based compression, which might not be enough for image-heavy files, our tool intelligently processes every page.
Not all documents are created equal. That's why we offer three distinct compression modes to suit your specific needs.
| Mode | Quality (DPI) | Best Used For |
|---|---|---|
| Extreme Compression | Low (~72 DPI) | Internal memos, drafts, or when you need the smallest possible file size for slow internet connections. Text might appear slightly soft. |
| Recommended | Medium (~150 DPI) | The gold standard. Perfect for email attachments, homework submissions, and general web viewing. Balances visual clarity with significant size reduction. |
| Less Compression | High (~300 DPI) | Printing, photography portfolios, or archiving important legal documents where every detail matters. |
Security is our top priority. Most "free online converters" require you to upload your file to their server. This means your sensitive contracts, bank statements, or personal essays are temporarily stored on a computer you don't control.
We do things differently. Our PDF Compressor runs 100% in your web browser using advanced JavaScript libraries (PDF.js and jsPDF). Your file is never sent over the internet. It stays on your device, is processed by your device's CPU, and is saved back to your device. This guarantees total privacy and zero data leakage.
File not shrinking?
If your PDF is already highly optimized or contains only text without images, further compression might be minimal. In rare cases, re-encoding already compressed JPEGs can slightly increase size. Try the "Extreme" setting if "Recommended" doesn't yield results.
Processing taking too long?
Since processing happens on your device, performance depends on your computer's speed (RAM/CPU). Very large documents (100+ pages) may take a minute. Ensure you aren't running too many other heavy tabs.
Always check the final compressed PDF before submitting it to an assignment portal. Ensure that all text is legible and charts are clear. If the "Extreme" setting makes graphs blurry, re-compress the original file using the "Recommended" setting.
To achieve maximum compression client-side and handle scanned documents effectively, this tool converts pages to optimized images. This means text selection/search functionality will be removed in the compressed version. This is ideal for flattened copies.
There is no artificial limit set by our servers because we don't use servers! However, your browser's memory limits might affect extremely large files (e.g., 200MB+ or 500+ pages).
No. For security reasons, we cannot process password-protected files. Please unlock the PDF using your password before uploading it here.
Yes, modern smartphones (iPhone and Android) are powerful enough to run this tool directly in Chrome or Safari. It's great for compressing photos of homework taken with your camera.