Compress PDF to 30KB
Compress any PDF to 30KB here, free and without uploading it anywhere. In our test a 628KB scanned A4 page came down to 29.8KB and kept its text selectable. Drop the file above, press Compress PDF, and the download has no watermark.
How Many Pages Fit in 30KB
The honest answer is one, comfortably, and two at a push. The compressor spreads your target across the whole document, so page count decides how much detail each page keeps. A single scanned page at 30KB holds most of its legibility. Split that same 30KB across four pages and each gets roughly 7KB, which turns body text into a grey smear.
Work out the budget before you compress: divide your target by the number of pages. Under about 10KB per page, a scan stops being pleasant to read. Longer than two pages, with the 30KB rule fixed? Pull out the page the form actually needs using the extract pages tool, then compress that single page here.
How to Compress a PDF to 30KB
- Drag your file onto the upload box, or click Select PDF.
- The target already says 30 KB, so there is nothing to type unless your form wants another number.
- Click Compress PDF and let it run for a few seconds on your own device.
- Download from the result card, which reports the size you actually achieved.
Add several PDFs at once if you have a batch of certificates to get under the same limit.
Getting a Cleaner Page at the Same 30KB
Two habits make a real difference at this size. Scan in grayscale rather than colour when the document is black ink on white paper, because colour data costs kilobytes that buy you nothing on a photocopy. Scan at 200 DPI rather than 600, since the compressor will reduce the resolution anyway and starting closer to the destination leaves fewer artefacts.
If you already have a colour scan, open Advanced options after picking your file and tick Convert images to grayscale, which takes about a third off colour photos. The same panel lets you cap image resolution and strip metadata, both of which free up room that goes back into readable detail.
Your Scan Stays on Your Device
Pi7 does the compression inside your browser, so the PDF is never transmitted to us or to anyone else. There is no server copy, no retention window to trust and nothing to delete afterwards. At 30KB you are usually handling a signature page, a marksheet or an ID scan, and those are exactly the documents worth keeping off other people's machines.
Local processing also removes the usual annoyances. No upload progress bar, no daily limit, no email address required, and password-protected files are unlocked on your device with the prompt appearing in your own tab. To combine several small documents before compressing, the PDF merge tool runs the same way.
Frequently Asked Questions
Is 30KB enough for a scanned signature or marksheet?
For one page, yes. A signature is mostly white space and compresses very well, and a single marksheet page stays readable on screen. Check the format your portal wants first, because many exam forms require a JPG image for signatures rather than a PDF document.
What if my PDF will not go down to 30KB?
Text documents with embedded fonts hit a floor that image compression cannot cross. We measured one six-page example that would not shrink past 217.6KB by the careful route. Pi7 then flattens each page into an image to reach 30KB and tells you on the result card, because that version has no selectable text.
Will the text still be searchable after compressing?
If your target was reachable without flattening, yes, the text stays exactly as it was. Our 628KB scan reached 29.8KB with its content intact. When flattening was needed, the result card says so in plain words.
Can I compress to 30KB on a phone?
Yes. The tool runs in the mobile browser with no app to install, and because nothing uploads it works on a slow connection. Large scans take a little longer on a phone than on a laptop.
