A 300KB cap tends to sit on fields that expect a small bundle rather than a single sheet: a marksheet with its reverse side, an income certificate with the tehsildar’s covering page, a caste certificate together with the validity letter. Four or five greyscale pages at 150 DPI can be brought into that budget with the print still readable, which is the margin that makes 300KB feel generous after a 100KB field.
This page is fixed at 300KB and starts work as soon as a file lands in it. What people worry about at this size is less the words and more the marks around them: the round office seal, the embossed stamp, the revenue stamp with a signature across it. How those survive, and when the tool manages to keep the text itself selectable, is explained below.
How to use it
- Drop in the marksheet or certificate PDF, whether it came from a scanner app, a results portal or a photocopy shop.
- The tool first repacks the file, then re-compresses the scanned pages in measured steps until the total is under 300KB.
- Zoom into the preview on the seal and the signature before you download; those are the parts an examiner looks at.
- Save the file. The exact byte count is shown so you can compare it with the portal’s figure.
Keeping stamps and seals legible
Seals are the part of a certificate that compression hurts first. A round rubber stamp is thin lines of a single colour over printed text, and when JPEG quality drops those lines pick up ringing and the purple or blue ink blurs into the black print beneath. At 300KB a scan of three or four pages keeps the quality high enough that the office name around the rim of the seal remains readable. Scanning the stamped page in colour and the plain pages in greyscale, then merging, spends the budget where it is needed.
Embossed seals are different: they are pressed into the paper and show up only as faint shadow. A flatbed scan picks them up; a phone photo in flat light often does not, and no amount of compression brings back what the camera never saw. Photograph such a page with light coming from one side, so the relief casts a shadow, before worrying about the kilobytes.
When the text stays selectable
Whether the words in the result can still be selected depends on what the file was before compression. A marksheet downloaded from a university results portal is usually a real text PDF, and those fit under 300KB after the first stage, with the structure repacked and nothing else touched, or the second, with only the embedded logo and photograph re-compressed. The text remains selectable and searchable in both cases. A scanned marksheet never had selectable text, so there is nothing to lose there; the tool keeps the scan as an image and lowers its quality in steps.
The third stage, which turns every page into a picture, is reached only when a scan of many pages or a text file stuffed with high-resolution images still will not fit. The result card tells you which happened, in plain words, so a file that says structure only or photos re-compressed, text kept can be submitted knowing a reviewer can still copy the roll number out of it.
Frequently asked questions
- Will the round seal on my caste certificate still be readable?
- At 300KB, for a certificate of up to three or four pages, yes. The ring of text around a rubber stamp is thin, so check it in the preview at full zoom; if it has blurred, scan that page in colour at 150 DPI with the paper flat and compress again.
- My marksheet came from the university portal. Does compression keep it searchable?
- A results-portal PDF contains real text, and the first two stages leave text alone. The file almost always fits at 300KB after one of them, so the roll number, subject names and marks remain selectable and searchable afterwards.
- Why did my five-page file come out unchanged?
- It was already at or below 300KB, so the page offered the original rather than re-encoding it. Re-compressing a file that fits would only lower its quality. Check the byte count on the result card against the figure on the portal.
- Should I scan a marksheet in colour or greyscale for a 300KB limit?
- Greyscale for the pages that are plain print, colour only for the page carrying the seal or a photograph. A colour page at 300 DPI costs several times what a greyscale page at 150 DPI does, so mixing the two keeps the stamped page sharp without pushing the whole file into the picture stage.