PDFbolt — Free online PDF tools
Compress PDF
Reduce file size while keeping readable quality.
Large PDFs bounce off email limits, upload slowly, and fill storage. Compressing a PDF reduces its size — mostly by optimizing images — so it stays easy to share while remaining clear enough to read and print.
You pick how aggressively to compress, balancing smaller files against visual quality to match how the document will be used.
How to compress a PDF
- Select the PDF you want to compress.
- Pick a compression level: lighter keeps more detail, stronger makes smaller files.
- Optionally keep the original metadata.
- Run the tool and download the smaller PDF.
Frequently asked questions
Why did my file barely shrink?
Text-only PDFs are already compact. The biggest savings come from documents full of photos or scans.
Will text become blurry?
No. Text stays crisp; compression mainly reduces the size of embedded images.
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