Compress PDF to 1MB Online Free
Need to reduce your PDF to under 1MB? Use Extreme compression mode to maximize file size reduction. All processing happens locally in your browser — no upload to server.
Processing happens in your browser; secure upload may be used when needed for paid download delivery.
Tip: For the smallest file size, select Extreme compression mode below. This converts images to JPEG at 150 DPI for maximum reduction.
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Frequently Asked Questions
How do I compress a PDF to under 1MB?
Upload your PDF and select Extreme compression mode. This converts images to JPEG at 150 DPI and removes metadata for maximum size reduction.
Why would I need a PDF under 1MB?
Many email services and online forms have file size limits. Compressing to under 1MB makes it easy to attach PDFs to emails or upload to websites.
Will the PDF still be readable after compression?
Yes — text remains perfectly sharp. Only images are compressed, which may slightly reduce image quality but the document remains fully readable.