Conversion Tools Engine3 min read• Updated October 2026
PDF Merge & File Compression
Merge multiple files or reduce PDF footprints with selectable compression profiles.
Overview
Combines multiple PDFs into a single document and optimizes PDF file sizes by compressing embedded images and deflating internal data streams.
Key Specifications & Highlights
Merge Capabilities: Merge 2 to 5 PDFs on the Free plan (10 MB each); Pro up to 10 files (50 MB), Business up to 50 files (100 MB).
Compression Profiles: Choose Low (quality preservation), Medium (balanced optimization), or High (maximum size reduction).
Realistic Expectations: Compression results depend on file composition; quality can drop noticeably on High mode.