GST registration documents under 100 KB
The GST registration application stops you at every document tab with the same rule: PDF or JPEG, 100 KB at most. A single-page electricity bill scanned at a copy shop is often 400 KB; a three-page rent agreement photographed on a phone is several MB. KBcut brings each one under 100 KB and keeps the name, address and dates readable — which is what the GST officer actually checks before approving or raising a query.
What people upload here
- Proof of principal place of business: electricity bill, property tax receipt, rent or lease agreement, consent letter / NOC
- Constitution of business: partnership deed, certificate of incorporation
- Bank account proof: first page of passbook, cancelled cheque, or statement
- Photographs of the proprietor, partners or authorised signatory (JPEG)
What the GST portal upload checks
- Each uploaded document is capped at 100 KB; the form will not attach a larger file.
- Accepted formats are PDF and JPEG. A PNG or HEIC renamed to .jpg is still rejected.
- A rent agreement is usually uploaded together with an owner's electricity bill or tax receipt — both must fit.
- The officer must read the address exactly as typed in the form; a blurred scan is a common reason for a clarification notice (REG-03).
- Greyscale is the right default for bills and agreements; switch to Colour only for photographs.
Caps on this page follow published portal guidance and commonly reported limits as of September 2026. The portal's own notice or on-screen error always wins — type its number into the cap box if it differs.
Why a generic compressor gets this wrong
The 100 KB cap on GST uploads is tighter than most people expect for multi-page documents. A rent agreement has three to eight pages, and at 100 KB total that leaves 12–30 KB per page — below what colour JPEG can do legibly. This is where KBcut's greyscale and black & white options earn their place: dropping colour frees enough bytes to keep stamp-paper text readable. If an agreement still will not fit, upload the pages that carry the address, the parties and the signatures, and keep the full copy ready in case the officer asks for it during verification.
How to do it
- Select the document — a PDF, or photos of each page (they merge into one PDF).
- Leave the cap at 100 KB and Colour on Greyscale (Black & white for long agreements).
- Press Cut to size, check the preview is readable, download and attach it in the GST form.
Questions
The rent agreement is 8 pages — it will not fit in 100 KB.
Try Black & white first; typed agreements usually fit. If not, upload the first page, the page with the address and the signature page — and keep the full copy for the officer.
Do I need to self-attest before scanning?
Many CA practices do, and it does no harm. Sign on paper before scanning, not on the PDF afterwards.
What about replying to a GST notice?
Replies and appeals accept larger files, typically up to 5 MB per attachment. Use Split PDF by size for large annexures.
Is it safe for client documents?
KBcut never uploads: the PDF is rendered and compressed inside your browser. Nothing is sent to any server, which is the standard a tax practice should expect.
Can I upload a JPEG instead of a PDF?
Yes — the registration form takes both. Photographs of promoters must be JPEG; for a multi-page document, a PDF keeps every page in one attachment.