PDF Compressor
Compress PDF online free — shrink toward 100KB, 200KB or 300KB for email, uploads or exam portals. Try it now, nothing is uploaded. Processed locally in your browser — the file is never uploaded.
Click or drop a file here
or drag and drop
How to use pdf compressor
- Choose a file
Select a PDF from your device.
- Set the options
Fill in any fields the tool needs, such as a page range or watermark text.
- Run and download
The result is generated locally and downloaded straight to your device.
Features
Pages are processed with pdf-lib/pdf.js entirely in your browser.
Very large PDFs are rejected with a clear message instead of freezing the tab.
The file is discarded from memory once you leave the page.
Supported formats and limitations
PDF files and browser-supported source formats vary by tool.
Use cases include personal workflows, content preparation, and quick checks. Review output before relying on it for legal, financial, accessibility, or production decisions.
Frequently asked questions
Is my PDF uploaded?
No. Processing happens locally using the pdf-lib library loaded into your browser.
Is there a size limit?
Files over 100 MB are rejected because very large PDFs can exhaust browser memory.
Does this change my original file?
No. A new file is generated and downloaded; your original file on disk is untouched.
Can I compress a PDF to exactly 100KB or 200KB?
There's no guaranteed exact size — compression re-optimises the PDF's internal structure (removing duplicate objects, recompressing streams), so a text-heavy PDF often lands well under 100–200KB while one full of scanned images may stay larger. If it's still too big, convert the images to JPG first, then rebuild the PDF.
Why do exam portals cap uploads at 100KB, 200KB or 300KB?
Many Indian exam and government portals (SSC, IBPS, UPSC and others) cap document uploads at a specific KB size to keep their systems fast — the exact limit is printed in each exam's own notification, so check that before uploading.