Compress PDF
Free online PDF compressor. Re-pack object streams and strip metadata to shrink file size. Browser-based, no upload.
What is Compress PDF?
nutoolz Compress PDF re-packs the PDF object stream using pdf-lib's optimized save mode and strips embedded metadata (title, author, producer, creator, keywords). The result is a smaller file with the same visible content. Deeper compression via image re-encoding is on the roadmap.
Drop a PDF here or click to choose
One PDF at a time.
How to use Compress PDF
- 1
Upload a PDF
Drop a PDF or click to choose.
- 2
Click Compress PDF
The tool re-packs the file in your browser and reports the exact size savings.
- 3
Download the compressed file
The smaller PDF downloads immediately. If no savings were possible, the tool tells you so honestly.
Frequently asked questions
How much smaller will my PDF get?
It depends. PDFs already optimized by Adobe or modern exporters may not shrink at all — the tool honestly reports “same size or larger” in those cases. PDFs from Word, scan apps, or older tools typically shrink 10-30% from object-stream re-packing alone.
Will it reduce image quality?
No. This version only re-packs the file structure and removes metadata. Embedded images are untouched. Image re-encoding (which can give 50-80% reduction) is a future feature.
Does this remove my personal info?
Yes. The Title, Author, Subject, Keywords, Producer, and Creator metadata fields are cleared. Note: this does not remove content inside the pages themselves — only the document metadata.
Is my PDF uploaded?
No. Compression runs entirely in your browser.