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PDF Tools

PDF Compressor

Reduce your PDF file size without losing quality. Uses Ghostscript engine — text stays as text.

No uploadGhostscriptFree Local processing
Drag & drop your PDF here
Click to browse and select a PDF file
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PDF Tools

PDF Compressor — Documentation & FAQs

Reduce your PDF file size with Ghostscript engine — text stays as text, processed entirely in your browser.

Ghostscript engineText stays selectableClient-side (privacy-first)Free forever
Privacy

Your PDF is processed locally using Ghostscript WebAssembly. Files are never uploaded or stored on any server.

Secure workflow

Documentation

What is PDF Compressor?

PDF Compressor uses the industry-standard Ghostscript engine (compiled to WebAssembly) to reduce PDF file size. It downsamples images, optimizes fonts, removes metadata, and compresses streams — all while keeping your text as selectable vector text.

How it works

Upload PDF → choose a compression preset (Maximum, Balanced, or High Quality) → Ghostscript re-processes the PDF with optimized settings → download the smaller file.

Step-by-step
  1. 1) Upload your PDF (drag & drop or click to browse).
  2. 2) Choose a compression preset — Maximum for smallest file, Balanced for everyday use, High Quality for print.
  3. 3) Click "Compress & Download".
  4. 4) View the size comparison and download the compressed PDF.
Supported input

PDF (.pdf)

Output format

PDF (.pdf) — text stays selectable

Engine

Ghostscript WebAssembly — industry standard for PDF processing

FAQs

Is PDF Compressor free?

Yes, completely free with no signup required.

Is my PDF uploaded to a server?

No. All processing happens locally in your browser using Ghostscript WebAssembly. Your file never leaves your device.

How much will my PDF be compressed?

Results vary. PDFs with many high-resolution images can see 50-80% reduction. Text-heavy PDFs see smaller reductions.

Will text remain selectable?

Yes. Unlike basic image-based compressors, this tool uses Ghostscript which preserves text as vector text — your PDF stays professional.

What compression presets are available?

Three presets: Maximum (72 DPI, smallest file), Balanced (150 DPI, recommended), and High Quality (300 DPI, print-ready).

Can I compress password-protected PDFs?

No. Use the PDF Unlock tool first, then compress.

Is there a file size limit?

No fixed limit, but very large PDFs may take longer depending on your device.