Compress PDF to the exact size you need
Set a limit from 0.2 to 20 MB — 200 KB for a form, 1 MB for an email — and 1Scanner makes the file fit. You see the size of the real file before you download it, and text stays sharp and selectable. Everything happens in your browser.
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How to compress a PDF to a size limit
- Add your PDF. Pictures and several PDFs can be added too; they become one file.
- Choose Medium, Small or a limit such as 200 KB or 1 MB. Each choice shows the size of the real file.
- Download the smaller copy. Your original stays as it is.
How 1Scanner makes a PDF smaller
- It shrinks and re-encodes only the pictures inside the PDF — scans, photos, logos. Text, fonts and drawings stay as they are, so text stays sharp and searchable.
- With a size limit, it picks the sharpest version that fits. Only when nothing else fits does it turn pages into pictures, and then it says that text in that copy can't be selected.
- When a limit can't be reached, it says so and shows the smallest size it can make, instead of pretending.
- A PDF that is mostly text is already small; it won't shrink much, and 1Scanner tells you so.
Compress PDFs without uploading them
- Your files are opened and changed by your browser, on your device. They are never sent to our server or to anyone else.
- No account, no sign-up, no email.
- No ads, no analytics, no tracking scripts, and this site sets no cookies.
- Signatures and stamps you add are kept only in this browser, so they are there next time; the browser may clear them.
- Your original file never changes: every result is a new file that your browser downloads.
Details: 1Scanner Web Privacy Policy.
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Compress PDF: questions
How do I compress a PDF to 200 KB?
Add the PDF, choose the size limit and set it to 0.2 MB. 1Scanner shows the size of the file it made before you download it. If 200 KB can't be reached even with pages as pictures, it says so and shows the smallest size it can make.
How do I compress a PDF to 1 MB for free?
Choose a limit of 1 MB. 1Scanner first makes the pictures inside the PDF smaller and keeps the text as text. It is free, with no account and no daily limit.
Can I compress a PDF without losing quality?
Text and drawings don't lose anything: they are kept as they are. Pictures inside the PDF get smaller, so photos and scans lose some detail; Medium keeps them sharp enough for screens and most printing. Pick the largest size the website accepts.
Is it safe to compress a PDF online?
Here the file isn't uploaded: your browser compresses it on your device. Most other online compressors upload your file to their server first.
Can I compress a PDF to 100 KB?
The smallest limit is 0.2 MB, but Small often goes below that for short documents, and the real size is always shown before you download.
Will a digital signature in the PDF survive compression?
No. If a PDF carries a certificate-based digital signature, any changed copy no longer passes that signature's check. Compress the file before it is signed.