InfyTool
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Compress PDF

Scans and image-heavy PDFs shrunk hard — with the trade-off stated honestly, and your document never leaving your device.

One PDF · compressed on your device · nothing is uploaded

No size limit · files are processed on your device and never uploaded · how it works

Advanced settings (optional)
Compression level
Preset

Balanced suits emailing and uploads. Economy squeezes hardest for strict size limits; Sharp keeps fine print readable.

How it works
110 DPI · quality 70

Each page is re-rendered as a JPEG at the chosen sharpness — the honest trade of every strong PDF compressor: much smaller files, but text is no longer selectable. Best for scans, sharing and uploads; keep the original for editing.

Runs in your browser. Files are never uploaded — you can go offline after the page loads.

How to use the Compress PDF

  1. Drop one PDF.
  2. Pick a preset — Balanced suits most uploads — or set custom DPI and quality.
  3. Compress, check the before/after size, and download.

Easy to use

Drop files, pick options, download. Whole folders at once, no signup, no daily limit.

Best quality

The same engines the professionals use — SVGO, resvg, MozJPEG, libwebp, libavif — compiled to run in your browser.

Private & secure

Files are processed on your device and never uploaded. Close the tab and nothing remains anywhere.

What PDF compression really does

There is no magic that makes a PDF much smaller for free. Strong compression works by re-rendering each page as a JPEG at a chosen sharpness — that is what every serious compressor does, including the famous online ones; most just do not say so. The consequences: dramatic savings on scans and image-heavy files, and text that is no longer selectable or searchable in the compressed copy. Keep your original for editing; use the compressed file for uploads, email and archiving where size matters.

What to expect

  • Scanned documents — the ideal case: 60–90% smaller on Balanced, often more on Economy, still perfectly readable.
  • Image-heavy reports and presentations — large savings, since the images dominate the file.
  • Text-only PDFs — already tiny; rasterising them can make files bigger, and if that happens this tool tells you instead of handing you a worse file.

Privacy is the feature

The PDFs people most need to shrink — statements for a loan application, signed contracts, scans of IDs — are exactly the ones that should never touch a stranger's server. Rendering (pdf.js) and rebuilding (pdf-lib) both run in your browser; you can load this page, go offline, and compress. Related: PDF to JPG, Merge PDF, Split PDF.

Frequently asked questions

How much smaller will my PDF get?

Scans and image-heavy PDFs typically shrink 60–90% on Balanced. PDFs that are mostly text are already tiny — if compression cannot help, the tool says so instead of giving you a bigger file.

What is the catch with PDF compression?

Every strong compressor re-renders pages as images — that is where the savings come from — so text stops being selectable and searchable. This tool says so up front. Keep the original for editing; use the compressed copy for uploads and email.

Which preset should I use?

Balanced (110 DPI) for emailing and uploads — documents stay clearly readable. Economy when a form has a strict size limit. Sharp when the PDF has fine print or will be viewed at high zoom.

Is my document uploaded?

No — rendering (pdf.js) and rebuilding (pdf-lib) both run in your browser. For contracts and statements, that privacy is the whole point.

PDF to JPGEvery page of your PDF as a sharp image Merge PDFSeveral PDFs into one, in the order you choose Split PDFPull exactly the pages you need

Your files never leave your device

Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.

  • No upload, ever. Turn off Wi-Fi after the page loads and every tool keeps working.
  • No limits. No file-size cap, no queue, no watermark, no account.
  • Runs on your CPU. Batches use several cores in parallel; nothing is throttled.

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Need icons or SVGs to start from?

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