Reduce the size of your PDF files without losing quality
Convixy PDF Compressor reduces the file size of your PDF documents instantly — directly in your browser, with no software to install and no account required. It works by optimizing the internal structure of your PDF: compressing embedded images to a screen-friendly resolution, removing redundant data streams, stripping unused font subsets, and flattening unnecessary layers. The result is a significantly smaller file that retains the same readable layout, text quality, and page structure as the original. Whether you are on a laptop, tablet, or mobile phone, the tool works across all devices and operating systems without any configuration.
PDF files accumulate size quickly — especially those exported from design software, scanned documents, or presentations with high-resolution images. A 20MB PDF might contain images that are far larger than they need to be for reading on screen or printing at standard resolution. This creates real-world problems: email services like Gmail and Outlook have attachment limits, many online portals and government forms cap uploads at 5MB or 10MB, and large files take longer to load and share over slow connections. Compressing your PDF solves all of these issues at once. You get a smaller, faster, more shareable file without having to redo any of the original work.
There are many common situations where compression makes an immediate difference:
The amount of compression depends entirely on what is inside the PDF. Files with many high-resolution photographs or large scanned images typically see the most dramatic reductions — often 60% to 85% smaller. PDFs that are already optimized, or that consist mostly of text and simple vector graphics, will see smaller but still meaningful reductions of 10% to 30%. After every compression, Convixy shows you the exact original size, the new compressed size, and the percentage saved — so you always know precisely what was achieved.
Convixy uses the /screen optimization profile, which targets a balance between file size and readability. Images are resampled to 72 DPI — the standard resolution for screen display — which is more than sufficient for documents you intend to read, share digitally, or email. Text, vector graphics, and document structure are not affected by compression at all; they remain perfectly sharp at any zoom level. The main trade-off to be aware of is that if your PDF contains high-resolution photos intended for professional print output — such as a photography portfolio or print-ready brochure — the compressed version may show a slight reduction in image crispness when printed at large sizes. For all other everyday uses, the quality is indistinguishable from the original.
The most dramatic results come from PDFs that contain large embedded images. Specifically:
Text-only PDFs — such as a plain word-processed document or a legal contract — will compress less dramatically, but the process still removes internal overhead and is always worthwhile.
The current upload limit is 10MB per file. This covers the vast majority of everyday PDF documents. If your file is larger than 10MB, the most effective approach before uploading is to open the original source file — such as a Word document, PowerPoint, or scanned image — and reduce the embedded image resolution there before re-exporting to PDF. In Microsoft Word, for example, you can go to File → Compress Pictures and select a lower resolution. In Adobe Acrobat or a similar tool, you can use the Reduce File Size option to bring a very large PDF within range before uploading here for further optimization.
Yes. Convixy supports uploading and compressing multiple PDF files in a single session. Each file is processed individually and made available for download. This is especially convenient when you have a batch of reports, invoices, or scanned contracts that all need to be reduced before uploading to a portal or archiving in a folder. Simply select all the files at once when prompted, or drag and drop them together onto the tool.
Privacy is a core part of how Convixy operates. All file transfers happen over an encrypted TLS connection — the same standard used by banks and secure websites. Once your compressed PDF is ready and downloaded, both the original uploaded file and the compressed version are automatically deleted from our servers. No one reads, indexes, or stores your document content. Since no account or login is ever required, there is no user profile linked to your files at any point. Your documents stay entirely your own.
Nothing to install and nothing to configure. Convixy runs entirely in your browser, which means it works identically on Windows, macOS, Linux, Android, and iOS. There is no desktop application to download, no browser extension required, and no dependency on having any particular software installed on your device. Open the page, upload your PDF, and download the compressed result — that is the entire process.
Once your PDF is the right size, Convixy has everything you need to work with it further: