Skip to content
108pdf
Compress PDF Free

Compress a PDF. Right in your browser.

Make a PDF smaller for email and upload forms. Choose a level or type the exact size you need.

Compress PDF in 3 steps

  1. 1 Choose the PDF.
  2. 2 Pick a compression level or enter a target size in KB.
  3. 3 Download the smaller PDF and check the new size.

How 108pdf compresses a PDF

First we rebuild the file structure, which often saves space without touching quality. If you need a smaller file, pages are re-rendered as optimised images at the resolution you choose. This is the method that reliably reaches strict limits like 100KB or 200KB for scanned documents.

Heavy compression turns text into an image, so text in the output cannot be selected. For typed documents that must stay searchable, use the Light level.

Why use Compress PDF on 108pdf

Compress PDF runs entirely in your browser. Your file is opened by your own device, processed there and saved back to you, so it is never uploaded to a server and never stored by us. That makes it safe for ID cards, exam forms, contracts and any other document you would rather keep private.

There is no account to create, no watermark on the result and no daily limit. You can process as many files as you like, one after another, and the tool keeps working even on a slow connection once the page has loaded.

If the result is not what you expected, change the options and run Compress PDF again on the same file. Nothing is lost, and your original file is never touched. Use the related tools below to continue the job, for example to resize, convert or merge the output.

Questions people ask

How small can a PDF get?

It depends on page count and content. A one or two page scanned document can usually reach 100KB. A 30 page scan may need 1MB or more to stay readable.

Why is the text no longer selectable?

Balanced and Strong levels rasterise pages to reach small sizes. Use Light compression to keep selectable text.

Are my files uploaded to a server?

No. 108pdf processes this file inside your browser using your own device. Nothing is sent to our servers, so there is nothing to delete afterwards and nothing that can leak.

Is this tool free?

Yes. It is free with no sign-up, no watermark and no daily limit.

Related tools

See all

Popular searches