A practical guide to fitting a scanned marksheet, certificate or ID under a tight upload limit.
Exam boards, recruitment portals and scholarship sites collect documents from hundreds of thousands of applicants in a few weeks. Keeping each upload to 100 KB or 200 KB keeps their storage, bandwidth and review screens manageable. The limit is not a judgement on your document; it is a rule of the system, and the form will refuse anything over it.
The trouble is that a normal phone scan is far larger than that, often between 1 and 5 MB. Getting from there to a file under 100 KB is possible, but only if you understand where the size comes from.
A PDF made from a word processor stores text as text, which is tiny. A scan is different: every page is a photograph of the paper, and a photograph is made of millions of coloured pixels. The size of a scanned PDF depends on three things: how many pixels each page has, how much colour information each pixel carries, and how many pages there are.
That is why a one-page black and white scan can be small while a three-page colour scan of the same paper is enormous. It is also why simply renaming or zipping the file does nothing. The only real way to shrink a scan is to give it fewer pixels or less colour detail, and that is what compression does.
First, start from a clean scan. Lay the paper flat, use even light so there are no shadows, and crop away the table or floor around the page. A tidy, evenly lit page compresses much better than a crooked photo with dark corners.
Second, include only the pages the form asks for. Every extra page adds to the size, so do not scan the blank back of a certificate unless it is required.
Third, open the PDF compressor, drop your file, and choose the limit the form states, such as 100 KB or 200 KB. The tool works down from the best quality that fits, lowering image quality and then size only as far as it needs to, so the result is as sharp as the limit allows.
Fourth, check the result before you upload it. Open it, zoom to full size, and read the smallest text, the numbers, the dates and any stamps. If those are clear, the file is good.
Compressing a scan this way turns each page into a compressed picture. That is how a scan gets small, but it also means the text in the result cannot be selected or searched, because it is now part of the image. For a form upload this does not matter, since a person looks at the page rather than copying from it. Keep your original file if you need the text later.
If the result is over the limit, try these in order. Remove any page that is not required. Re-scan the page in black and white or greyscale instead of colour, which removes a lot of data. Re-take the photo closer to the page so less empty background is included. And check whether the form really needs 100 KB: some portals allow 200 KB for documents and 50 KB only for photographs, so read the instructions again before you squeeze harder.
A very long document at a very small limit will always lose some sharpness. When that happens the tool tells you, so you can decide whether the result is still readable enough for the form.
Confirm the exact limit and its unit. Most portals count 1 MB as 1,024 KB, but a few use 1,000, so leave a small margin rather than aiming for the exact number. Make sure the file really is a PDF and not a renamed image, check that the file name has no special characters if the portal complains, and keep the original scan in case you need to redo it.
Official limits change from one notice to the next, so always check the current notice for your exam or application before you submit.
Marksheets, certificates and ID cards are personal documents. Tooqly compresses the PDF inside your own browser, so the file is not uploaded to a server and nobody else sees it. That is worth checking on any compressor you use, because many online tools upload your file before they shrink it.
For a single page of printed text, usually yes. A page with very small print, a photograph, or several pages squeezed into 100 KB will look softer, so zoom in and check the details before you upload.
Because the pages are turned into compressed pictures to make them small. The text looks the same on screen, but it is part of the image. Keep your original if you need to copy text from it.
Most upload portals count 1 MB as 1,024 KB, but not all do. Leave a small margin under the stated limit so the file is accepted either way.