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PDF Compressor
Shrink a PDF for email or upload — pages are re-rendered as optimized images, right on your device.
How it works: each page is rendered and re-saved as an optimized JPEG image, then rebuilt into a new PDF. This shrinks scanned documents and image-heavy files dramatically — but the text becomes part of the picture, so it’s no longer selectable or searchable. For text-only PDFs that are already small, the original may stay smaller; the tool tells you if so.
About the PDF Compressor
The PDF Compressor shrinks PDF file size so documents fit email attachment limits and upload forms. Choose a compression level from light to maximum, optionally convert to greyscale for even smaller files, and see the original and compressed sizes before downloading. Compression runs on your device, so sensitive documents stay private.
How to use the PDF Compressor
- Choose a PDF or drop it on the page.
- Pick a compression level — Recommended suits most documents.
- Tick greyscale if colour isn’t needed.
- Click Compress PDF, check the size saved and download it.
Frequently asked questions
How does the PDF compressor work?
It re-renders each page as an optimised image at the chosen quality, which greatly reduces the size of scanned and image-heavy PDFs.
Will text still be selectable after compressing?
Because pages are converted to images, text in the compressed file can’t be selected or searched. Keep the original if you need that.
Which compression level should I choose?
Recommended is a good balance of size and quality. Use Strong or Maximum when you must get under a size limit and small text can be slightly softer.