Compress PDF

Compress PDF reduces a document's file size by re-saving it with a leaner internal structure. It cleans up redundant objects, removes unused metadata and orphaned resources, and rewrites the cross-reference table and content streams more efficiently. The result is a smaller file that opens, uploads, and emails faster while keeping the same pages and reading order.

This tool focuses on structural optimization rather than aggressive image downsampling, so the gains depend heavily on how the original PDF was authored. Files exported from design software often carry duplicated fonts, bloated metadata, or uncompressed object streams that compress well, whereas a PDF that is mostly high-resolution scanned images has less structural overhead to trim. Because the page content itself is preserved, text remains selectable and searchable after compression.

Typical use cases include shrinking documents to fit email attachment limits, speeding up uploads to portals that cap file size, reducing storage costs for large document archives, and preparing PDFs for web download where smaller files improve load times. It is also a good first step before sharing a contract, report, or portfolio that came out unexpectedly large from an export pipeline.

For best results, run Compress PDF after you have finished editing, since later edits can reintroduce bloat. If a scanned, image-heavy PDF does not shrink much, the limiting factor is the embedded image data rather than structure; in that case converting pages with PDF to Image and re-importing through Images to PDF at a chosen resolution gives you more control over the size-versus-quality tradeoff.