Free PDF Size Reducer With Size Presets
Shrink a PDF to under 100 KB, 200 KB, 500 KB or any limit you set. No upload, no watermark, no daily limit.
Click to choose a PDF file, or drag one here.
About Compress PDF
Compress PDF makes a PDF smaller than a size you choose: 100 KB, 200 KB, 500 KB, 1 MB, 2 MB or a limit of your own. It runs in your browser, so the file is never uploaded, and there is no watermark, sign-up or daily limit.
It is built for the moment a form, portal or email refuses a file for being too big, such as an admission or job application, a bank or visa form, or a scanned CNIC or degree. Instead of guessing a quality setting, you give the size you need and the tool searches for the sharpest version that fits, measuring the real file each time.
How it works matters, so here it is plainly: every page is drawn as a picture and saved again as a JPEG, at a resolution between 150 and 60 DPI. The pages keep their size and look, but the text becomes part of the picture. It can no longer be selected, copied or searched, and links, bookmarks and form fields are lost. Keep your original, and use the compressed copy for uploading, emailing or printing.
How to use Compress PDF
- Click the upload area, or drag your PDF onto it. The tool shows the page count and the file size.
- Pick the size you need: 100 KB, 200 KB, 500 KB, 1 MB, 2 MB, or Custom to type your own limit in KB or MB. The line under the buttons estimates how many KB each page will get.
- Click Compress PDF and wait. Longer documents take longer, and Cancel stops the job.
- Compare page 1 in the before and after preview, then click Download Compressed PDF. If it is not sharp enough, choose the next larger size and run it again.
Tips for best results
- Fewer pages means a sharper result, because all pages share the limit. 500 KB across 5 pages gives each page far more room than across 50. Extract only the pages you need with PDF Split first.
- Use the largest limit the form allows. The tool picks the sharpest version that fits, so a bigger limit always means a better-looking file.
- Before you upload, open the downloaded file and zoom in on small print such as stamps, phone numbers and ID digits to make sure they are still readable.
- If a very small limit can't be met, the tool gives you the smallest version it can make and says by how much it missed. It does not go below 60 DPI, because text becomes unreadable.
- Compress from the original each time. Compressing an already compressed copy blurs it further.
Frequently asked questions
How do I compress a PDF to under 100 KB?
Choose the 100 KB preset, add your file and click Compress PDF. The tool finds the sharpest version that still fits. One or two pages fit comfortably. The limit is shared by all pages, so ten pages at 100 KB (about 10 KB each) is usually out of reach, and the tool then tells you the smallest size it can make instead.
Why can't I select or copy the text after compressing?
Every page is turned into a picture before it is saved again. That is how the file gets small enough, and it is the trade-off of compressing inside a browser. Keep the original if you need selectable text, and use the compressed copy only for uploading, emailing or printing.
Is my PDF uploaded anywhere?
No. The file is opened, drawn and rebuilt entirely in your browser. The page downloads its PDF reading engine, roughly 2 MB, the first time you choose a file, but your document is never sent to a server.
What if the result is still bigger than my limit?
The tool then offers the smallest version it can make and says how far over the limit it is. To get under the limit, take only the pages you need with PDF Split, or choose a higher limit. It never goes below 60 DPI, because text becomes unreadable.
Does 100 KB mean 100,000 or 102,400 bytes?
The tool counts 1 KB as 1,000 bytes and 1 MB as 1,000,000 bytes, so the result is under your limit however the upload form counts. A file manager that counts in 1,024s will show a slightly smaller number than the preset, never a larger one.
Does it work on scanned PDFs?
Yes, that is what it suits best. A scan is already a set of pictures, so little is lost beyond sharpness. If your scan has a hidden searchable text layer from OCR software, that layer is dropped too.
Will the pages keep their size and orientation?
Yes. A4 stays A4, landscape stays landscape, and a page that was rotated in the original looks the same as it does in your viewer, because each new page takes its size and orientation from the original. Only the sharpness changes, from up to 150 DPI at generous limits down to 60 DPI at the tightest.
What happens to a form I have already filled in?
Text typed into form fields is drawn onto the page as part of the picture, so it stays visible, but the fields themselves are gone and can't be edited. Open the result and check that every answer, including ticked boxes, is still showing before you upload it.
Can I compress a password-protected PDF?
No. Save a copy without the password in a PDF viewer first, then choose that copy.
Why does it say my file is already small enough?
If the file is already under the limit you chose, the tool leaves it alone, because turning a small text PDF into pictures can make it bigger. Choose a smaller limit if you still want it smaller.
Is there a limit on file size or number of pages?
The site sets none, but everything runs on your device, so very large files (hundreds of pages) can be slow or run out of memory, particularly on older phones. For a big document, split it first and compress the parts.