Hyper CompressThe Best Open Source Compression Engine

A high fidelity, content preserving compression engine that preserve PDF conformance, and runs everywhere from the browser to your server.

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Compress a PDF now

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Monotonic by design

Hyper never makes your PDFs bigger. If there’s nothing to gain from compression, it simply gives you the original file back

Content preserving

Your text stays searchable, signatures remain valid, and PDF/A files stay conformant. True lossless mode compresses your PDF without changing its content..

Reliability you can measure

Tested across 27,352 runs against Ghostscript, MuPDF and qpdf, with the lowest corruption rate of any engine we measured.

Built to run everywhere

The same Hyper engine powers the CLI, Node SDK, browser, self-hosted service, and C API.

What is Hyper Compress

Hyper Compress is built by the BentoPDF team. It works throughout the entire PDF, finding the best way to reduce size without compromising fidelity.

Hyper optimizes images, fonts, content and duplicate data, choosing the best compression method for each part of the document. Every change is checked, and anything that could affect the result is automatically rolled back.

On our benchmark suite, the median document shrinks by 58% at the default preset while remaining visually identical. The full methodology and per-file results are available in the benchmarks.

How do you want to use Hyper?

You want to	Use
Compress a PDF right now, in the browser	Try our live website
Compress PDFs from the terminal	the CLI
Compress PDFs from Node.js	the Node SDK
Compress PDFs in the browser	the WebAssembly package
Run a compression service for your team	the self-hosted Docker image
Embed the engine in another language	the C API