How to compress pdf to 150kb
- Drop your PDF in, or click to browse and select it.
- The tool tries a lossless rewrite first, then re-renders the pages if needed to get under 150KB.
- Check the final file size on the result card.
- Download your under-150KB PDF — ready to upload.
What you can use it for
- Compress a two-page certificate to 150KB
- Reduce a payment receipt PDF for an application form
- Shrink a colour document with a stamp or seal
- Meet a 150KB limit on a university portal
Why use FlowVid Tools
- Private by design — your PDF is processed on your own device and is never uploaded.
- Exact size — the finished file is measured, not estimated, before you download it.
- Free and unlimited — no daily cap, no watermark, no sign-up.
Supported formats
This tool accepts PDF as input and gives you a PDF under 150KB as output. Everything happens on your device in seconds — your file is never uploaded, so there is nothing for anyone to keep.
Where a 150KB PDF limit shows up
150KB sits between the two most common caps and shows up on state recruitment, university and payment-proof uploads.
It fits two to three clean pages, or one colour certificate with a photo, stamp or seal that needs to stay crisp.
Getting a scan under 150KB and keeping it readable
Size limits are shared across every page, so the single biggest lever is page count: upload only the pages the form asks for. A one-page certificate at a given limit comes out far sharper than the same limit spread over six pages.
Scan in colour only if the document needs it, keep the page flat and evenly lit, and crop away the desk around it. Less noise and less empty background leave more of the byte budget for the text itself.