Will it work on a phone?

Yes. The layout adapts to a small screen and the processing runs in the mobile browser, so a photo or a downloaded document can be handled on the device it arrived on.

Because the expensive part — the server farm — does not exist. Processing runs on your device, so the site can stay free without a signup wall in front of it or an upsell in the middle of a job.

Which file types does Reduce PDF File Size accept?

The drop area takes PDF. Files are read from your device in the browser, so the format has to be one a browser can decode — that is why the accepted list on this page is finite and honest rather than "everything".

What do I get back from Reduce PDF File Size?

The result is PDF, offered as a download the moment the work finishes. Multiple results come back together rather than as fifty separate save dialogs.

Reduce PDF File Size

Quick size reduction with a single click.

Drag & drop your PDF here

or click to browse — .pdf · up to 1 files

Compression strength

Balanced for everyday documents. Pages are rebuilt as optimized images, so text in the output is no longer selectable — keep the original if you need search-friendly PDFs.

Add a PDF first.

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About Reduce PDF File Size

When the task is making a document lighter without wrecking it, Reduce PDF File Size does it on the page you are already on — no upload, no queue. Quick size reduction with a single click. It takes PDF and produces PDF. Files up to 100 MB each, 50 at a time, and the work happens on your own machine rather than on a server.

Reduce PDF File Size earns its place when the file is the awkward kind — a contract, a scan, an ID — and it should not leave the machine it is already on.

How to use Reduce PDF File Size in 3 steps

Start by dropping the PDF you want to work on; the limit is 100 MB per file.
Set Compression strength — low, recommended, extreme, or custom, which then exposes Render resolution and JPEG quality.
Press Compress PDF and download the PDF result.

What you get with Reduce PDF File Size

One job, done in the browser: quick size reduction with a single click.
Free to use, with no signup and no account
No watermark or logo added to your output
Works on desktop and mobile, no install

Reduce PDF File Size: questions

Will it work on a phone?: Yes. The layout adapts to a small screen and the processing runs in the mobile browser, so a photo or a downloaded document can be handled on the device it arrived on.
Why is it free?: Because the expensive part — the server farm — does not exist. Processing runs on your device, so the site can stay free without a signup wall in front of it or an upsell in the middle of a job.
Which file types does Reduce PDF File Size accept?: The drop area takes PDF. Files are read from your device in the browser, so the format has to be one a browser can decode — that is why the accepted list on this page is finite and honest rather than "everything".
What do I get back from Reduce PDF File Size?: The result is PDF, offered as a download the moment the work finishes. Multiple results come back together rather than as fifty separate save dialogs.