Compress PDF
Reduce scanned and image-heavy PDF size locally, with clear quality trade-offs.
Your privacy is safe, this tool runs entirely in your browser. Nothing you enter is uploaded to or stored on our servers.
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How to use Compress PDF
- 1Choose a PDF, preferably a scanned or image-heavy document.
- 2Choose a compression preset.
- 3Select Compress PDF and let the browser render each page.
- 4Compare sizes and download the compressed copy if it is smaller.
When This Compression Method Works Best
Scanned forms, photographed notes and image-heavy reports often shrink significantly when pages are rendered at a controlled resolution and JPEG quality. Text-only PDFs may already be smaller than a flattened copy, so the tool always shows the result before you choose to download.
Frequently asked questions
How does browser PDF compression work?
Each page is rendered as a compressed image and rebuilt into a PDF. This works especially well for scans and image-heavy documents.
Will text remain selectable?
No. This browser-only method flattens each page to an image. Use it when smaller size matters more than searchable or selectable text.
Which preset should I choose?
Balanced is a good default. Strong compression lowers resolution and image quality; print quality keeps more detail.
Is my PDF uploaded?
No. Rendering and PDF creation both happen in your browser.
Why can the output be larger?
Text-only or already-optimised PDFs may not benefit from raster compression. The tool clearly shows both sizes before download.