About PDFUnderKB

PDFUnderKB is a free tool for people filling an application, exam, or university form that wants a PDF under a size in KB. You add the PDF you already have, or photos of the pages, and download a smaller PDF.

The work happens in your browser. The page reads the file, builds the smaller PDF, and lets you download it. There is no account and no upload. A certificate does not have to sit on someone else's server first.

It is the companion to ExamPicResizer, which resizes the passport-style photo and signature those same forms ask for. This site is for the document PDF.

Not an official site

PDFUnderKB is not run by the Staff Selection Commission, UPSC, NTA, IBPS, a state board, a university, or any government department, and it is not a coaching institute. The size chips are common limits, not a quote from your notice. If the form and this page disagree, the form wins.

What the tool will not do

It will not invent a file size. If the only way under the limit is to make the text hard to read, it stops and says so. It will not add empty data to push a small file up to the limit. It will not open a password-protected PDF, and it will not strip a digital signature in silence.

Questions go to hello@pdfunderkb.com. Do not attach the document.