You have filled the form, scanned your certificate, and clicked upload — and the portal throws it straight back: "File must be in PDF format and less than 200 KB." Your scan is a 3 MB JPG. Now what?
This is one of the most common walls people hit on Indian exam and government portals. The good news is that it is easy to fix once you understand what the portal is actually checking.
Why portals want a PDF (and why they cap the size)
Recruitment and admission portals — SSC, UPSC, NTA, IBPS, state PSCs, university admissions — receive lakhs of applications, each with several documents. Two things follow from that:
- They standardise on PDF. A PDF holds several pages in one file, opens the same way on every device, and is easy to print for verification. That is why the instructions almost never say "upload a JPG of your certificate" — they say "upload a PDF".
- They cap the file size. Storing lakhs of large scans is expensive, so each upload gets a tight limit. On most Indian portals that limit lands somewhere between 100 KB and 300 KB per document.
So your file has to clear two checks: the right format (PDF) and the right size (under the KB limit). Miss either one and the upload fails.
Typical PDF size limits
Always read your own notification first — these change from year to year and from document to document. That said, these are the ranges you will see most often:
| Portal | Typical document PDF limit |
|---|---|
| SSC (CGL, CHSL, MTS, GD) | ~200 KB |
| UPSC (Civil Services, NDA, CDS) | ~300 KB |
| NTA (NEET, JEE Main) | ~200 KB |
| IBPS (Bank PO, Clerk, SO) | ~200 KB |
| State exams (e.g. UPSSSC) | ~200 KB |
Some portals also cap the number of pages, or ask for each document as a separate PDF rather than one combined file. Check that before you merge everything together.
Why "print to PDF" usually fails the limit
The usual instinct is to open the photo, hit print, and choose "Save as PDF". That does produce a PDF — but almost always a large one, because it embeds your image at full resolution. A 3 MB phone photo becomes a 2–3 MB PDF. It is the right format and completely the wrong size.
The same goes for most quick converters: they change the format but ignore the size limit, so you end up in a loop — convert, upload, rejected, try again.
Converting and compressing are two different jobs. You need both.
How to make a form-ready PDF, step by step
1. Get a clean photo or scan first
The PDF can only be as good as what goes into it. Before converting:
- Lay the document flat, in even light, with no shadow across it.
- Shoot straight down, not at an angle, so the text is not skewed.
- Crop out the table, floor, or background so only the document fills the frame. This alone can cut the file size a lot — you are not spending kilobytes on your desk.
2. Put your pages in the right order
If the form wants one PDF containing several pages — say your certificate front and back, or a photo plus a signature plus a proof — decide the order before converting. Portals expect documents in the order listed in the instructions.
3. Rotate anything sideways
Phone photos are often taken in landscape or come out rotated. A sideways document in a PDF looks careless to a verifier and, on some portals, gets rejected outright. Rotate each page upright before you convert.
4. Convert and compress to the KB limit in one step
This is the step that actually matters. The tool needs to:
- Place each image on a page (A4 is the safe default for document scans),
- Lower the image quality just enough that the whole PDF lands under your KB limit,
- And tell you the final size before you download it.
Our Image to PDF Converter does exactly this. Add your images, choose a target — 100 KB, 200 KB, or your own number — and it merges everything into one PDF and compresses it to fit. It shows the final size up front, so you know it will pass before you go anywhere near the portal. There are ready-made pages for SSC, UPSC, NTA and IBPS with the usual limit already selected.
Everything runs in your browser — your certificates and ID proofs are never uploaded to any server.
5. Check it before you upload
Open the finished PDF once. Confirm that every page is upright, in the right order, and still readable. A PDF squeezed too hard becomes blurry, and an unreadable document can get your application rejected at verification even if the upload succeeds.
A4 page or fit-to-image?
Two layouts cover almost everything:
- A4 page — each image is centred on a standard A4 sheet. Use this for certificates, mark sheets and any document a verifier might print. It is the safer default.
- Fit to image — each page is exactly the size of the image, with no white border. Useful when the upload is a single photo or signature on its own.
If you cannot get under the limit
Sometimes the target is genuinely too tight — for example five pages under 100 KB. When that happens:
- Crop harder. Extra background is wasted file size.
- Split the upload. If the portal allows separate files per document, do not merge everything into one PDF.
- Re-shoot in better light. A dark, noisy photo compresses far worse than a bright, clean one. Noise is detail, and detail costs kilobytes.
- Raise the limit slightly if the form allows a range. A readable 190 KB file beats an unreadable 90 KB one.
Quick checklist
- ✅ PDF format, not JPG
- ✅ Under the KB limit in your notification
- ✅ Pages in the order the form asks for
- ✅ Everything upright, cropped and readable
- ✅ Checked the exact limit against the official notice — not a forum post
Get those five right and the upload goes through the first time.