Everything you need to know about compressing multiple PDF files at once with PDF Lab
Go to Batch Compress PDF ToolThe Batch Compress PDF tool reduces the file size of many PDFs in a single operation. Upload multiple PDFs, choose a compression level, and download the compressed results.
Key features:
You can compress multiple PDFs in a single batch. For best performance, we recommend 10-30 files per batch.
Low: Best quality, smaller reduction.
Medium: Balanced quality and size.
High: Smallest size, more aggressive compression.
Yes. You can download each compressed PDF individually or download one ZIP containing all files.
Compression can reduce image quality depending on the level. Text remains readable, but images may show reduced detail at higher compression.
Files are stored temporarily during processing and ZIP creation, then removed. PDFs are not kept permanently.
Some PDFs use compression or security settings that the default parser cannot read. If a file fails, try re-saving it or using a different PDF.
Yes, but large batches are faster on desktop due to file size and network limits.