Choose the limit first
Set 100KB, 200KB, 500KB, or 1MB before adding a PDF.
Free PDF Size Reducer
Shrink a PDF to 100KB, 200KB, 500KB, or 1MB right in your browser. Your files stay on your device.
What is a PDF size reducer?
A PDF size reducer makes a PDF smaller so it can fit an upload limit, attach to an email, or move through a document portal. This PDF Size Reducer focuses on a number you already know: 100KB, 200KB, 500KB, or 1MB.
You pick the limit before adding the file. The tool then reduces page resolution and image quality within a readability floor. If the target is too small for the document, you get the closest smaller result instead of a false success message.
For a 200KB upload cap, use the Compress PDF to 200KB page for verified use cases and guidance on what can fit.
Three short steps
How to reduce PDF size
No settings maze. Start with the file limit your destination gave you.
Pick the target
Choose 100KB, 200KB, 500KB, or 1MB. The selected size applies to the next PDF or group of PDFs you add.
Add your PDF
Click the upload box for one file, or drop up to 20 PDFs. Each file can be up to 50 MB and 20 pages.
Download the result
Watch the status, then download each finished file. When the queue is done, you can also download the completed PDFs as a ZIP.
How this PDF size reducer works
The browser reads the PDF and renders each page as an image. It tries lower page resolutions and JPEG quality levels, stops at set readability limits, and builds a new PDF from the compressed pages.
This method works well for scans and image-heavy documents. It can remove selectable text, forms, links, bookmarks, and other document structure, so the finished PDF should be treated as an image-based copy.
- Target reached
- The finished PDF is at or below your selected size.
- Target not reached
- The best readable result is smaller than the original but still above the target.
- Could not reduce
- No result was smaller than the original within the quality limits.
Target Size Mode
When to use Target Size Mode
Target Size Mode is built for a hard file cap. Use it when the destination cares more about file size than editable PDF structure.
A good fit
- Application and enrollment portals
- Scanned IDs, certificates, receipts, and forms
- Email attachments with a stated size limit
- Image-based PDFs that only need to stay readable
Choose another approach
- Resumes that need ATS parsing
- Contracts and papers that need searchable text
- PDFs with working forms, links, or annotations
- Ebooks or documents that depend on bookmarks
Private PDF compression
This PDF Size Reducer runs inside your browser. It does not upload PDF contents, filenames, page images, or compression results to a server. No account is required.
Tasks and download links last for the current session. Refresh the page and they are cleared. The saved preferences are your last target-size choice and whether you have seen the one-time notice about image-based output.
No PDF uploadNo accountLocal downloadsSession-only results
Common questions
PDF size reducer FAQ
Is this PDF size reducer free?
Yes. You can reduce PDF size in your browser without creating an account or paying for a plan.
Are my PDF files uploaded?
No. The PDF is read, compressed, and rebuilt on your device. The file contents, filename, page images, and finished PDF are not sent to a server.
Can I reduce a PDF to exactly 100KB or 200KB?
The tool aims for the size you select. A result marked Target reached is at or below that limit. Some PDFs cannot reach a very small target without dropping below the tool's readability limits.
Why does my result say Target not reached?
The tool found a PDF that is smaller than the original but still above your target. It gives you that closest useful result instead of making the pages unreadable just to hit the number.
Will the reduced PDF keep searchable or selectable text?
Do not count on it. Target Size Mode may turn each page into an image. Text selection, search, copy and paste, links, forms, bookmarks, and annotations may be lost.
What are the PDF limits?
Each PDF can be up to 50 MB and 20 pages. You can choose one PDF with the file picker or drop up to 20 PDF files at a time.
Can I reduce multiple PDFs in one session?
Yes. Drop up to 20 PDFs, or keep adding files one at a time. The tool processes them in order, and each finished PDF can be downloaded as soon as it is ready.
Can this tool open a password-protected PDF?
No. Unlock the PDF first, save an unprotected copy, then add that copy to the tool.
Reduce your PDF now
Pick the limit your upload form requires, add the PDF, and download the result from this page.
Go to the PDF Size Reducer