A 300 KB limit leaves room for a few good pages
A 300 KB cap is common on visa, university and recruitment websites for documents such as degree certificates, transcripts, experience letters and bank statements. It is roomy enough for a short multi-page document to stay sharp, but a raw scan from a phone or copier is often several megabytes. With the target set to 300 KB, this compressor first tries to make the file smaller while keeping its real text, then, if needed, redraws the pages as images at the best resolution that still comes in under 300 KB. Everything runs on your device, so your certificates and statements are never uploaded to us.
Updated September 2026
How to compress a PDF to 300KB
- 1Tap Select PDF file and pick your document, even if it is a few megabytes.
- 2The size target is already 300 KB; change it only if the website says otherwise.
- 3Start the compression. Longer files are tested on a few sample pages first to save time.
- 4Download the result once it shows a size under 300 KB, and give it a quick look.
Which documents suit a 300 KB target
Three hundred kilobytes suits a two- to five-page document: a degree certificate with its back page, a set of mark sheets, an offer letter, a short bank statement or a filled application form. At this size the tool can usually keep pages at a resolution where normal text looks crisp and signatures and stamps remain clear.
How the compressor reaches the target
- Step one keeps everything as it is and only removes waste inside the file, so text stays selectable.
- If that is still too big, it tests picture settings from sharpest to smallest and stops at the first one that fits.
- For long files it measures a few evenly spread pages first, then compresses the whole document with the chosen setting.
- If even the smallest setting is too big, you still get that smallest file, with a message saying so.
Tips for a sharper result
- Remove blank pages and duplicates first with Delete PDF Pages; every page removed gives the others more room.
- Put the pages in the right order with Rearrange PDF Pages before compressing, so you only do it once.
- Scan in good light with the page filling the frame; grey backgrounds and dark edges are hard to compress.
- If you have photos rather than a PDF, combine them with JPG to PDF and then compress here.
Features
- Preset to 300 KB
- Text-keeping squeeze tried first
- Sharpest page images that fit the limit
- Fast size checks on sample pages for long files
- Tells you the smallest size when 300 KB is out of reach
- No upload, no account, no watermark
Frequently asked questions
How many scanned pages fit in 300 KB?
In our tests with ordinary A4 phone scans, three pages stay comfortable to read, and around five to eight pages still fit at a lower resolution that is fine for typed text. Pages full of colour photos need more room each, so fewer of them fit.
Will my transcript look blurry at 300 KB?
Usually not for a document of a few pages; the tool chooses the highest quality that fits. With many pages, each one gets less room, so check the smallest text by zooming in before you submit it.
Can I send the 300 KB PDF by email or WhatsApp?
Yes. A file this size sends quickly on any connection and opens in every PDF viewer, on phones and computers.
The website says “below 300 KB”. Will a file of 299 KB be accepted?
It should be. The tool counts 1 KB as 1,000 bytes, which is stricter than the 1,024 bytes some sites use, so a result marked under 300 KB stays under the limit either way.
What if my PDF is 40 pages long?
At 300 KB that is only about 7 KB per page, which is too little for scans to stay readable. Split the file into parts with Split PDF and upload them separately if the form allows, or upload only the pages it asks for.
Do I need to install anything?
No. The page works in any up-to-date browser on Android, iPhone, Windows, Mac or Linux, and it keeps working without sending your PDF anywhere.