PDF Compressor.
Shrink PDF files by compressing image quality and resolutions. Processed entirely inside your browser RAM.
Drag & drop your PDFs here, or browse files
Supports PDF documents. Process up to 5 files (max 10MB total).
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Compression Settings
How to Compress PDFs Locally on Your Device
Large PDF files are difficult to send via email and fail to upload to exam portals. Our PDF Compressor renders each document page onto canvas layers, compresses embedded photographic data using high-performance image compression algorithms, and re-compiles them into a fresh PDF file.
Lossy Image Compression
Most heavy PDFs are large due to scanned images. By adjusting the quality slider and scale factor, you can trim non-essential metadata and background pixels to achieve up to a 75% file size reduction.
Absolute Security Guarantee
Official documents, signatures, and personal transcripts should never be uploaded to remote cloud servers. Since Compy Image uses local javascript libraries inside your browser's active tab, your files never leave your computer.
Frequently Asked Questions
Why is my PDF still the same size after compression?
If your PDF is pure text (not scanned images), standard compression won't make a big difference. Image-based PDFs see the largest size reductions (up to 90% savings).
What are the upload limitations?
You can compress up to 5 PDFs at the same time, with a size constraint of 10MB per file and 10MB total.