Re-save a PDF with compact object streams and optionally clear common document information fields. Runs locally; size reduction is not guaranteed.
PDF attachment limits can make sharing difficult. This local tool re-saves the document with compact PDF object streams and can clear common document information fields. It does not resize images, reduce scan resolution, or guarantee a smaller file.
Already optimized PDFs may stay the same size or grow. The tool compares sizes before downloading and keeps your original unchanged. Clearing document information is not full metadata removal or redaction: embedded images, XMP, annotations, and visible content may still contain personal information.
Best uses: making a PDF small enough to email, reducing upload time for large documents, fitting PDFs into CMS or form size limits, and freeing up cloud storage by shrinking old archives.
Compact PDF structure is not the same as scan downsampling. If images dominate the size, structural re-saving may be insufficient. Read the PDF size troubleshooting guide to check document features and output without mistaking metadata clearing for redaction.
No. Everything runs in your browser using pdf-lib. Your PDF never leaves your device.
There is no guaranteed reduction. This re-saves PDF structure without downsampling images. Already optimized or scanned PDFs may not shrink; no download is started when the result is not smaller.
It does not deliberately reduce image resolution or quality, but re-saving may affect document features or signatures. Keep the original and verify the output.
Large scans usually need image downsampling, which this tool does not implement. Use a suitable offline PDF application if structural re-saving is insufficient and your document must stay local.
