How do I optimize pdf online?

Upload your file to the Optimize PDF tool, adjust the options if needed, and click the action button. Your new PDF is ready to download in seconds — no signup required.

Is the Optimize PDF tool free?

Yes. Optimize PDF on Pdfly is 100% free with no watermarks. There are no daily limits for reasonable use, and we never require an account.

Are my files safe when using Optimize PDF?

Your privacy is our priority. Files are processed over an encrypted connection and are automatically deleted from our servers within one hour. Many tools run entirely in your browser, so your file never leaves your device.

Which devices does Optimize PDF work on?

Optimize PDF works on any modern browser — Chrome, Safari, Firefox, Edge and Brave — on Windows, macOS, Linux, iOS and Android.

Do I need to install any software to use Optimize PDF?

No. Optimize PDF runs entirely online. Nothing to install, no plugins, no signup — just open Pdfly and go.

Optimize PDF — Free Online PDF Tool | Pdfly

Optimize PDF

Optimize your PDF for the web and fast loading.

Free forever, no signup
Runs in your browser — private by design
Works on every device and browser

Drop your PDF to optimize it

qpdf linearization + object streams — fast to open in browsers, tighter file structure

100% private, in-browser No signup

Why use Pdfly's Optimize PDF?

Built with the same craft as a native app — in a browser tab.

Lightning fast

Runs in your browser using WebAssembly — no waiting rooms.

Private & secure

Files never leave your device for most operations.

No signup

Use every tool anonymously with zero data collection.

Beautifully simple

A distraction-free workspace built for focus.

How to optimize pdf in 3 steps

Simple, fast, and totally free.

1Step 1
Upload your file
Drag and drop into the Optimize PDF dropzone above, or click to browse from your device.
2Step 2
Adjust the options
Reorder, choose ranges, quality or formats depending on the tool. Sensible defaults are set for you.
3Step 3
Download in seconds
Click the primary action button. Your new file is ready to download instantly.

Optimize PDF — FAQ

Answers to the questions people ask most about Optimize PDF.

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