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Compress PDF Online Free — Reduce PDF Size

Compress PDF files to reduce file size without losing quality.

Drop your PDF here

Reduce file size without losing quality

Max 50MB

How it works

01

Upload your file

Drag and drop or click to upload your PDF. Secure, fast, and free.

02

Configure options

Choose your settings and preview the result before processing.

03

Download result

Get your processed file instantly. No watermarks, no sign-up required.

Frequently asked questions

How much can I compress?

Compression depends on the PDF content. Image-heavy PDFs can be reduced by 50-90%. Text-only PDFs have less room for compression.

Will compression reduce quality?

The 'High Quality' preset preserves visual quality. 'Maximum' compression may reduce image resolution for the smallest file size.

What's the maximum input size?

You can compress PDFs up to 50MB.

How does compression work?

We optimize images, remove duplicate objects, clean metadata, and apply stream compression (deflate).

About Compress PDF

Large PDF files are hard to email and slow to upload. SignForge's Compress PDF tool reduces file size significantly — image-heavy PDFs can shrink by 50-90% — while maintaining visual quality.

Choose from three compression levels: High Quality (minimal visual change), Balanced (good compression with acceptable quality), or Maximum (smallest file size). The tool optimizes images, removes duplicate objects, cleans metadata, and applies stream compression.

All processing happens securely on our servers. Your files are never stored and are discarded immediately after compression.

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