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Compress PDF Online

Reduce your PDF file size. See a preview before compressing — all processed locally in your browser.

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Drop your PDF here

Supports PDFs up to 500MB

Compress PDF Without Losing Quality

ConvFiles uses PDF-lib's object stream compression to reduce the internal structure size of your PDF. For text-heavy documents expect 20–40% reduction. Drop your file and see the before/after sizes after compression.

Frequently Asked Questions

How much will my PDF shrink?

Typically 20–60% depending on content. Text-heavy files compress more than image-heavy ones.

Does it reduce text/image quality?

Text quality is preserved. Image quality depends on the original encoding.

Is there a file size limit?

No server limit. Browser memory is the only constraint.

Are my files uploaded?

Never. All processing is client-side.

Compress PDF Online

Compress PDF Without Losing Quality

Frequently Asked Questions

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