Compress PDF to 200KB
This preset targets the most common single-document upload slot on government application forms — one scanned certificate or mark sheet, uploaded as its own PDF into its own field. A range around 100-200KB is a frequently used ceiling for exactly this kind of single-page (or occasionally two-page) upload. If your form instead needs several documents combined into one bundled PDF, use our 1MB PDF compressor instead — that preset is built for multi-page bundles, which need more room per page than a lone certificate does.
Why exam portals cap single-document uploads this tightly
A form that accepts a category certificate, income certificate, or single mark sheet as its own upload field almost never expects more than one page of content, so the portal sets a low ceiling to keep its storage and review load predictable across the huge volume of applications it processes. The gap between what a raw scan produces and what the form allows is usually enormous: a phone camera photo of a certificate, or a flatbed scan at a high DPI setting, is commonly 1-5MB — many times over a 200KB ceiling — purely because the scanning app defaults to far more image resolution than a legible document actually needs.
What causes the bloat
A scanned document PDF is essentially a photograph of a page wrapped inside a PDF container. All the extra file size comes from that embedded image being captured (and saved) at a much higher resolution and JPEG quality than a document made of mostly text and a stamp/signature actually needs to stay readable. This tool re-encodes that embedded image at a lower resolution and quality — the same iterative approach our photo resizer uses — until the whole PDF lands in your target range, without you needing to rescan anything.
How to use this tool
- Upload your scanned certificate or mark sheet as a PDF.
- Confirm the min/max KB fields match the limit stated for this specific upload field in your application form.
- Click compress and let the tool work through the embedded image quality automatically.
- Open the result to confirm text, stamps, and signatures are still clearly legible before downloading.
Which application steps typically need this
This ~200KB single-document band is commonly used for a category/caste certificate, an income and asset certificate for EWS applicants, an individual semester or final mark sheet, a domicile certificate, or a disability certificate — anywhere the form has one upload field for one specific document rather than a combined bundle.
Processed entirely in your browser — nothing is uploaded anywhere.
How this works & its limitations
This tool re-encodes JPEG images embedded inside your PDF at a lower quality (the same binary-search technique used by our photo resizer) and rebuilds the PDF around them. It works best on scanned photo/signature/certificate PDFs. PDFs that are mostly vector text, or that use image formats other than JPEG (raw bitmap, JPEG2000, CCITT fax), will shrink little or not at all — there's no way to meaningfully recompress content that isn't photographic. True content-stream/font compression isn't feasible to do reliably from inside a browser tab.
FAQ
My scan is several MB — can this tool handle it? Yes, that's the typical starting point — a raw scan or phone photo of a document is almost always far larger than the target, and the compressor is built to bring it down without rescanning.
Will the certificate's stamp or seal still be visible after compression? In most cases yes, since a stamp is high-contrast and compresses well — always open and check the result before submitting, since some very light or faint stamps can lose clarity at aggressive compression.
My PDF barely shrinks at all — why? This tool recompresses embedded JPEG images. A PDF that's mostly vector text, or that uses a non-JPEG embedded image format, has little or nothing to recompress this way — see the "How this works & its limitations" note inside the tool above.
Is my document uploaded anywhere during compression? No — everything happens locally in your browser using pdf-lib; your file is never sent to a server.