Frequently Asked Questions

Yes, our PDF compressor is completely free. No hidden fees, no registration required, and no file size limits.

Yes, your files never leave your browser. All compression happens locally on your device. We never upload or store your files.

Results vary by content. Image-heavy PDFs can be reduced 50-80%. Text-heavy PDFs typically see 10-30% reduction.

Yes, our compressor works on all devices including iPhone, Android, iPad, and tablets. No app needed.

Low compression preserves maximum quality. Higher levels may slightly reduce image quality but text and vectors remain sharp.

No. Everything works in your web browser. No software, extensions, or apps required.

FreeConversion handles large files directly in your browser. The limit depends mainly on your device's memory, but files up to 100MB are processed without issues.

There's no limit! You can use the tool as many times as you want, completely free.

Currently, you can compress one file at a time. However, the process is very fast and you can compress as many files as you want consecutively.

Low compression (10-30% reduction) preserves maximum quality. Medium (30-50%) offers a good balance. High (50-70%) significantly reduces size with slight image quality loss. Maximum (70-90%) creates the smallest possible file.

Absolutely! FreeConversion is perfect for professional documents. Since all processing happens locally in your browser, your confidential documents remain 100% private.

Our tool uses advanced algorithms to optimize images, remove unnecessary metadata, and reorganize the internal PDF structure for minimal size while preserving visual quality.

Yes! Scanned PDFs are often very large and benefit greatly from compression. You can typically reduce their size by 50-80%.

Yes, compressed PDFs remain in standard PDF format and open in all PDF readers (Adobe Reader, browsers, mobile apps, etc.).

Compression is permanent. We recommend always keeping a copy of your original file before compression, in case you need the uncompressed version.