About Compressify

Compressify is a free browser utility for reducing PDF and image file sizes and combining PDFs. It is designed for people preparing scans and attachments for upload forms or email.

What happens to a file

The file picker reads your selected files into this browser tab. PDF.js renders PDF pages into images; the PDF library assembles those images into a new document. Image compression adjusts image dimensions and encoding quality. File contents are not uploaded to our server.

What the tool can and cannot do

Image-heavy scans often benefit most. Re-rendering a small text PDF can make it larger. The tool chooses the smaller result. A single PDF is returned unchanged if compression would enlarge it. For combinations, original pages are copied when rasterization does not help. Rasterized pages lose selectable text; merging or rewriting documents may lose interactive forms, links and digital signature validation. The tool does not perform OCR. Always retain your source files.

PDF levels use approximately 72 DPI (Strong), 108 DPI (Balanced) and 144 DPI (Light), with JPEG quality settings of 55%, 70% and 85%. These are settings, not guarantees about output size or readability. Processing time depends on page count and your device.

Combining documents

Select multiple PDFs, arrange them in the required order, then choose Combine & compress PDFs. Each file's pages remain in their original order. Current batch limits are 20 files, 50 MB of input and 200 pages. Smaller batches work better on phones.

Site and support

The website and required libraries need network access to load. Hosting and third-party resource requests can include technical information such as IP addresses; local file processing is separate from those requests. See our privacy policy.

For problems or corrections, email support@compressify.in. Include your browser, the setting used and what went wrong. Do not send sensitive documents.