Free PDF Compressor: Reduce PDF Size to 100KB, 200KB or 1MB Online
June 10, 2026 · 4 min read
A PDF compressor makes documents easier to email and upload. This free online PDF compressor is ideal for scanned or image-heavy PDFs, helping you reach a target like pdf compressor to 100kb, 200kb, 500kb or 1mb. It is a free pdf compressor online with no watermark.
How to compress a PDF
- Open the free PDF Compressor.
- Upload your PDF.
- Pick a quality level to control the size reduction.
- Click Run and download the smaller PDF.
Frequently asked questions
What is a PDF compressor?
A tool that reduces a PDF's file size while keeping it readable, so it is easier to share or store.
What is the best free PDF compressor for large files?
For large, image-heavy PDFs, a rasterizing compressor like ours works well — lower the quality to shrink very large files further.
Can I compress a PDF to 100KB or 200KB?
Lower the quality slider. Hitting an exact target like 100KB or 200KB works best for scanned/image PDFs.
Why didn't my text PDF get much smaller?
Text-only PDFs are already small, so there is little to compress. This tool shines on scanned and image-based PDFs.