Compress PDF
Advanced PDF & Document ManagementShrink a bulky PDF by recompressing its embedded images.
What is Compress PDF?
Compress PDF shrinks a bulky file by rendering each page to a JPEG image and rebuilding the document from those images. You control the image quality and resolution, then see exactly how much smaller the result is before downloading. It all runs in your browser with pdfjs and pdf-lib, so nothing is uploaded. Because pages become images, selectable text and links are removed — this works best for scans and image-heavy PDFs.
How to use Compress PDF
Add your PDF
Drop in a PDF or click to browse. It's best suited to scanned or image-heavy documents where a large chunk of the size comes from pictures.
Set image quality
Use the quality slider (10–95%) to trade sharpness against file size. Lower quality means smaller files; higher quality keeps more detail.
Choose a resolution
Pick Standard (72 dpi), Good (108 dpi), or High (144 dpi). Lower resolutions produce smaller files, higher ones keep text and lines crisper.
Compress
Click Compress PDF. Each page is rendered and re-embedded as a compressed image, with a live counter showing which page is being processed.
Check the savings and download
The result panel shows the before and after size and the percent saved. If it came out larger, try a lower quality or resolution — then download the compressed PDF.
Common uses
- Shrink a scanned document so it fits an email size limit
- Reduce a photo-heavy brochure before uploading it
- Compress a bulky receipt or statement for storage
- Make an image-based PDF small enough for a web form
- Cut the size of a scanned book or manual to share faster
- Trim a large presentation export down for quick sending
Why choose FreeTools
100% private
Your files are processed inside your browser and are never uploaded to a server.
Free, no account
No sign-up, no watermark, no paywalled “premium” tier. Just open a tool and use it.
Instant
No upload, no queue, no server round-trip — work starts the moment you drop a file.
Runs in your browser
Built on open web standards. Works on any modern desktop browser, nothing to install.
No upload size caps
Nothing leaves your device, so there’s no server file-size limit — only your machine’s memory.
Yours to keep
Results download straight to your device in clean, standard file formats.