Nothing is uploaded. When you drop or pick a PDF, the tool reads it locally with the browser’s File API, renders its pages in memory with the pdf.js engine (whose worker is bundled locally, not fetched from a CDN) and rebuilds the compressed file with the pdf-lib library on your own machine. There is no server, upload, database, API or tracking in the processing path, so certificates, mark sheets, Aadhaar cards and private paperwork you are shrinking for a form stay on your device; the tool works offline once cached, and closing the tab discards everything. The only optional network use anywhere on the site is consent-gated advertising, which never sees your files.

Because 200 KB leaves more headroom than a 50 KB or 100 KB target, the tool frequently reaches it without pushing quality to the limit — it keeps the higher-quality Best variant whenever that already fits, so text stays crisp and, for lightly compressed documents, may remain selectable. When a heavier scan needs stronger compression, pages are rebuilt as JPEG images to hit the size, which makes the text on those pages part of the picture and no longer selectable or searchable; that trade-off is normal for image-heavy uploads and the result stays legible. Three variants (Best Quality, Balanced, Smallest) are produced in one pass so you can take the sharpest one that meets 200 KB, or the smallest when a portal is strict about the number.

It depends on what is inside the PDF. The real savings come from re-encoding images, so a text document or a single scanned page usually falls comfortably under 200 KB. A long multi-page scan or a file full of photographs has a floor: past a certain point the pages would turn to mush, so the tool stops at the smallest readable size it can reach and reports that figure with a note rather than producing an unusable file. If you are stuck above 200 KB, enabling grayscale, removing pages you do not need, or splitting the document first will usually get you under the cap. The three variants let you take the Smallest one when you need every byte, or Best Quality — often the default at this roomy target.

Many online forms — especially government recruitment and examination portals such as NEET, SSC and state exams, plus UIDAI/Aadhaar updates, LIC, banking KYC and scholarship applications — cap each uploaded document at around 200 KB to keep their systems fast and uniform, and applications are routinely rejected for oversized files. When your certificate, mark sheet, Aadhaar card or signed form is a few hundred kilobytes to a few megabytes, you need it under 200 KB to complete the submission. This tool is built for exactly that: the target is fixed at 200 KB so you can drop the PDF and download a version that clears the cap, without hunting through compression settings. If the portal wants a tighter cap, sibling tools target 100 KB and 50 KB, and looser limits (300 KB, 500 KB and up) have their own presets.