Shrink a PDF by re-compressing the images inside it.
About this tool
Upload a PDF and pick a compression level. Tabreon re-encodes the photos and scans inside the document at a lower quality and resolution, and leaves text, links and fonts untouched. It shows the size before and after, and never gives you a bigger file. Everything runs in your browser, so the PDF is never uploaded.
Runs in your browser — nothing is uploaded; your input never leaves your device. How it works
Quick answer
Upload a PDF, choose Light, Balanced or Strong, and Tabreon re-compresses the images inside it and shows the size before and after. The PDF is processed in your browser and never uploaded.
Why use Tabreon for this?
Compression runs in your browser, so the PDF never leaves your device. That matters for contracts, statements and other private documents.
You see the exact before and after size, and the tool never hands back a file bigger than the one you gave it.
Text stays as real, selectable text. Only the images are re-encoded, so you can still search and copy from the result.
How to compress a PDF
1Upload your PDF. Add the PDF you want to make smaller.
2Pick a compression level. Light keeps the most image quality, Strong makes the smallest file, and Balanced sits in between.
3Compress and download. Click "Compress PDF", check the before and after size, then download the smaller file.
What makes a PDF file large?
In most large PDFs the size comes from images: scanned pages, photos and screenshots stored at high resolution or low compression. Text and vector graphics take very little space. Compressing a PDF therefore mostly means re-encoding those images at a lower resolution and a more efficient JPEG quality, which can cut a scanned document to a fraction of its size while keeping it readable.
How Tabreon handles your data
Compression runs in your browser. The PDF is read locally, its images are re-encoded with your browser's built-in image encoder, and the new file is assembled on your device. Nothing is uploaded to a server.
Key features
Three compression levels: Light, Balanced and Strong
Before and after file size shown for every run
Text, links and fonts are left untouched
No upload: processing stays in your browser
Common use cases
Getting a scanned contract under an email attachment limit
Shrinking a photo-heavy report before sharing it
Meeting the upload size limit on a job or visa application portal
Common mistakes & limitations
Text-only PDFs have little to compress. The tool will tell you when a file is already about as small as it gets.
Images with transparency, masks or CMYK/print colour spaces are left as they are, so print-ready files may shrink less.
Compression is lossy for the images it touches. Keep your original if you need full image quality later.
Frequently asked questions
Most of a PDF's size usually comes from its images. If the file is mostly text or its images are already well compressed, there is little left to remove, and the tool says so instead of returning a larger file.
Yes. Only the images are re-encoded. Text, links, bookmarks and fonts are kept as they are.
Balanced suits most documents. Use Light if the images need to stay sharp (for example photos you may print), and Strong when the smallest possible file matters more than image detail.
No. The whole compression runs in your browser, and the file never leaves your device.