Optimize PDF

Optimise a PDF by re-packing it with object streams — often smaller with no loss of quality and text stays selectable. For scanned files use Compress PDF. Runs in your browser.

How to use Optimize PDF: Open Optimize PDF — no sign-up or software download is required. Drag and drop your file(s) into the tool, or click to browse and select them from your device. Choose any options you need, such as order, quality, page range or output format. Everything runs inside your browser, so your data never leaves your device.

Select a PDF

Processed locally in your browser — never uploaded.

Optimise a PDF by re-packing it with object streams — often smaller with no loss of quality and text stays selectable. For scanned files use Compress PDF. Runs in your browser. Optimize PDF is a free, browser-based tool in the Filevane pdf tools collection — there is nothing to install, no account to create and no watermark on your results. It works on desktop, tablet and mobile, and because the work happens on your own device it stays fast even with large inputs.

How to use Optimize PDF

Open Optimize PDF — no sign-up or software download is required.
Drag and drop your file(s) into the tool, or click to browse and select them from your device.
Choose any options you need, such as order, quality, page range or output format.
Click the action button and let the tool process everything locally in your browser.
Download the finished file. Your originals are never changed or uploaded.

Why use Optimize PDF?

100% free with no limits, no sign-up and no watermarks.
Private by design — your files are processed in your browser and never uploaded to a server.
Fast and lightweight, with instant results even on a phone or a slow connection.
Works everywhere — any modern browser on Windows, macOS, Linux, Android or iOS.
Part of a full pdf tools suite, so related optimize pdf tasks are one click away.

What people use Optimize PDF for

Shrinking a PDF without touching image quality at all.
Cleaning up a file that has grown after repeated editing and saving.
Reducing size before archiving a document that must stay pixel-identical.

Optimize PDF: limits and things worth knowing

This is lossless: the file is re-packed by removing orphaned objects, duplicated resources and incremental-save history. No image is re-encoded and no pixel changes.
Savings vary enormously. A file edited and saved many times can shrink substantially, while a freshly exported PDF may barely change because there is nothing redundant to remove.
If you need a big reduction on a scanned document, Compress PDF re-encodes the images and will achieve far more — at some quality cost.
Incremental save history can contain earlier versions of edited content, so re-packing has a mild privacy benefit as well as a size one.

Is it private and secure?

Your privacy is built in. Optimize PDF does all processing on your own device using client-side code, so your files are never transmitted, stored or seen by anyone — including us.

Network activity: none. Nothing is sent and nothing is fetched. This tool makes no network request at all once the page has loaded — which is why it keeps working if your connection drops.

You do not have to take that on trust — our privacy proof page publishes the Content-Security-Policy that enforces it, lists every third party it permits, and shows how to verify the whole claim yourself.

We also measured the competition. Our PDF upload audit recorded how many bytes each of 20 online PDF tools actually transmits: 12 of the 13 measurable services uploaded the whole test file, and Filevane transmitted 0.00 MB.

Learn more

How to Compress a PDF Without Losing Quality — How to compress a PDF without losing quality: why files get large, which method to use for scans vs text, and how to hit a target size. Nothing uploaded.

See all free pdf tools or browse the full tool catalogue.