Compress PDF

When to use Compress PDF

Your email client bounces back a 22 MB scan of a signed contract because the attachment limit is 10 MB, or a client portal won't accept anything above 5 MB. Drop the PDF here, choose a compression level, and the tool re-renders each page at your target quality then stitches the pages back together on your own machine. The original stays untouched on your drive — you download a separate compressed copy. A good scan with embedded photos can often lose 60–70% of its weight at the medium setting with no perceptible difference on screen. If you need to preserve fine print or vector artwork, pick the high quality option and still expect a meaningful size reduction.

• Shrink a 22 MB signed contract to clear a 10 MB email limit
• Reduce a scanned invoice batch before uploading to an accounting portal
• Compress a photo-heavy product catalog before posting it on a website

About this tool

Got a PDF that's too big to attach to an email — or keeps bouncing back over a portal size limit? Drop it here, pick a compression level, and download a smaller file in seconds. Each page is rendered onto a canvas at your chosen DPI, re-encoded as a JPEG at your chosen quality, and stitched back into a new PDF — all on your own machine. A 25 MB scan of a signed contract can often drop under 5 MB at the Medium setting with no perceptible difference at normal reading size. The High setting trims less but keeps fine print crisp; Maximum compression squeezes the most bytes out and works well for archiving documents you'll only ever read on screen. Your original file stays untouched on your drive — you download a separate compressed copy.

Tips

• Start with the Medium setting — it renders pages at 120 DPI and JPEG quality 0.7, which cuts most image-heavy PDFs by 60–70% with no visible difference at normal reading size.
• If your PDF contains fine print, small fonts, or vector diagrams, use the High setting (150 DPI / JPEG 0.85) to keep those details legible after compression.
• Maximum compression (72 DPI / JPEG 0.5) works best for scanned documents you only need to read on screen — avoid it for anything that will be printed or projected.