Compress PDF to a specific size

Tell us the limit, such as 500 KB or 2 MB, and Wispdf keeps trying settings until your PDF fits. It runs in your browser first and shows you the size it reached.

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Compress PDF to a Size at a glance

Compress PDF to a Size is a free tool that shrinks a PDF until it is at or under a size you choose, such as 200 KB or 1 MB. You type the target or pick an email preset, and Wispdf tries settings in your browser until the file fits, then tells you the size it reached.

Limits · Files up to 1 GB each · Any number of files at a time · Free and unlimited, no account needed

Last updated October 19, 2026

How to use Compress PDF to a Size

Add your PDF
Choose a file or drop it on the page.
Set your target
Type a size in KB or MB, or pick an email preset of 10, 20 or 25 MB.
Compress and check
Wispdf tries settings until the file fits. You see the size it reached, then save your PDF.

What Compress PDF to a Size does

Compressing a PDF to a specific size means shrinking it until it is at or under a number you choose, such as 200 KB or 1 MB. In Wispdf, you type the target or pick an email preset of 10, 20 or 25 MB. Wispdf tries different settings in your browser until the file fits, then tells you the size it reached. It never makes a file bigger.

People use it to

Get a scanned passport page under a 200 KB limit on a visa form
Fit a resume and work samples into a job portal's 2 MB upload box
Bring a contractor's photo report under 25 MB so it sends by email

What's included

Type any size

Enter the limit you were given, in KB or MB, and Wispdf works toward it.

Email presets

Pick 10, 20 or 25 MB, which are common attachment limits for email.

Clear result

Wispdf tells you the size it reached, so you know whether the file fits before you upload.

Never bigger

Your PDF never comes out larger than it went in, even if it was already under your target.

Where your file goes

Compress PDF to a Size runs on your device first, so your PDF stays in your browser. For very large or tricky files we may suggest our servers, and we always ask before sending anything.

On your device firstFree and unlimited, no account needed.

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Questions about Compress PDF to a Size

Is Compress PDF to a Size free?

Yes. Compress PDF to a Size is free and unlimited, and you don't need an account. Because the work happens on your device, there is no daily cap and no file count. The only practical limit is your device's memory, which is comfortably around 1 GB of PDFs on a computer and less on a phone.

Does my PDF get uploaded to reach the target size?

Compress PDF to a Size runs in your browser, so your file stays on your device. For very large or unusual files, we may offer to finish the job on our servers, and we always ask first. If you say yes, the file is encrypted on the way, deleted within an hour, and nobody looks at it.

How do I compress a PDF to 200 KB?

Open Compress PDF to a Size and add your file. Type 200 KB as the target and start. Wispdf tries settings until the PDF fits, then tells you the size it reached. The same steps work for 100 KB, 500 KB, 1 MB, 2 MB or any size you need.

Will my PDF look worse at a smaller size?

It depends on how far the file has to shrink. A small trim is hard to notice. A big jump, such as a photo-heavy file squeezed down to 100 KB, means images lose detail and scanned text can look soft. Typed text usually stays sharp. Zoom in on signatures and small print before you upload.

Can I use Compress PDF to a Size on my phone?

Yes. Compress PDF to a Size works in any modern browser on iPhone, iPad, Android, Windows, Mac, Linux and Chromebook, with no app to install. That is handy when an upload form on your phone turns a file away. Very large PDFs are easier on a computer, since the work uses your device's memory.

What if my PDF can't get as small as I need?

Compress PDF to a Size tells you the size it reached, so you aren't guessing. From there you have options. Split the file into parts with Split PDF, which can split by file size. Delete pages the form doesn't need. Convert color scans with Grayscale PDF, which often makes them smaller. Or rescan the paper at a lower resolution.