This PDF compressor shrinks heavy documents by re-rendering each page at a resolution and JPEG quality you choose, then rebuilding a fresh PDF. It works best on scanned paperwork and image-heavy files, where it can cut size by 50–90%. Optional grayscale and a max-size target give you fine control over the trade-off between file size and crispness.
Everything runs 100% locally in your browser — your PDFs are never uploaded to a server. One trade-off to know: because pages are rasterized, text becomes an image and is no longer selectable or searchable. If you need to keep text intact, use the lossless Merge PDF tool instead.
Frequently asked questions
How much can I shrink a PDF?
It depends on the source. Scanned or image-heavy PDFs often drop 50–90%, because the pages are re-rendered at a lower resolution and quality. Files that are already mostly compressed text see smaller gains.
Are my PDFs uploaded?
No. All processing happens locally in your browser using pdf.js and pdf-lib. Your files never leave your device.
Will text stay selectable?
No — the size reducer rasterizes each page, so text becomes an image. If you need selectable, searchable text, use the Merge PDF tool, which preserves the original pages without rasterizing.
Can I target an exact size?
Yes. Turn on “Target max file size” and the tool auto-tunes quality first, then resolution, until the output fits your budget.