Compress PDF Online | Private PDF Tool

How it works

Compress a PDF

Add one PDF, choose how much document structure to preserve, then compare and download the result

Add PDFOpen one local document.
Choose modeReview its preservation trade-off.
CompareDownload only when smaller.

Compress

Add one PDF

PDF files up to 100 MB and 500 pages are supported

Drop one PDF here+Browse PDFThe PDF stays in this browser. Password-protected and digitally signed PDFs are not processed.

Choose one PDF and start with Recommended mode for the strongest preservation.

Result

Compressed PDF

Add a PDF to compare its original and compressed size.

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Tool guide

Choose compression by document type

Use Recommended for text and vector documents, Strong for scans or mixed PDFs, and Maximum only when an image-only copy is acceptable.

Local processingHonest targetsPreservation choices

Quick answers

FAQs

Which compression mode should I choose?

Start with Recommended for text and vector PDFs. Try Strong for scans or image-heavy files, and use Maximum only when an image-only result is acceptable.

Does Recommended mode keep searchable text?

Recommended mode does not intentionally rasterize pages, so it provides the strongest preservation available in this browser workflow.

What does Maximum mode change?

Maximum mode rebuilds pages as images. Searchable text, links, forms, layers, signatures, and vector detail can be lost.

Will the result match my target size exactly?

No. A target is an approximation, and the tool stops before going below its quality floor.

Can I compress an encrypted or signed PDF?

Password-protected PDFs are not supported. Digitally signed PDFs should not be compressed because changing the file invalidates its signatures.

Is my PDF uploaded or stored?

No. The PDF is processed locally in your browser and is cleared when you reset or leave the page.