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GST registration photo size

The GST registration form takes a photo file of at most 100 KB, as JPG/JPEG. It also takes supporting documents (at most 1 MB). A file of 100,000 bytes or less passes whether the portal counts 1 KB as 1,000 or 1,024 bytes.

GST registration photo

JPG · under 100 KB (at most 100,000 bytes) · original pixel size · white background

PixelFit aims at 100,000 bytes or less, so the file passes whether the form counts 1 KB as 1,000 or 1,024 bytes.

What are you uploading?
Fit, background and padding white background

Saving presets is part of Pro.

Pick a photo to fit it to under 100 KB (at most 100,000 bytes).

The result appears here: the exact byte count, pixel size and quality, the size before and after, a preview and a download button.

GST registration upload specifications

Values for the GST registration photograph (GST portal), copied from GST portal user guide: Registration as Tax Deductor at Source, checked 31 October 2026; "not stated" means the source gives no figure for it.

UploadPixel sizePrint sizeFile sizeFormatBackground
Photo not stated not stated at most 100 KB JPG/JPEG not stated
Supporting documents not stated not stated at most 1 MB PDF or JPG/JPEG not stated

What the GST registration KB limits mean in bytes

The GST registration photo limit of 100 KB is 102,400 bytes when 1 KB = 1,024 bytes and 100,000 bytes when 1 KB = 1,000 bytes; a file of 100,000 bytes or less passes either way.

The GST registration supporting documents limit of 1 MB is 1,048,576 bytes when 1 MB = 1,048,576 bytes and 1,000,000 bytes when 1 MB = 1,000,000 bytes; a file of 1,000,000 bytes or less passes either way.

Largest GST registration photo under 100 KB

The GST registration source gives a file-size limit but no pixel size for the photo. Measured on a public-domain portrait, a 7:9 (35 × 45 mm shape) JPG at quality 85 stays under 100 KB up to about 716 × 920 px (97.5 KB), so any common camera photo has to be scaled down before it fits.

GST registration rejection checklist

Upload checks computed from the GST registration specification; a file that fails any one of them is usually refused at upload or flagged later.

  • Photo: File type is JPG/JPEG (a PNG or HEIC renamed to .jpg is still rejected).
  • Photo: The GST registration photo file is no larger than 100 KB (100,000 bytes is safe under both KB definitions).
  • Supporting documents: File type is PDF or JPG/JPEG.
  • Supporting documents: The GST registration supporting documents file is no larger than 1 MB (1,000,000 bytes is safe whether 1 MB is read as 1,000,000 or 1,048,576 bytes).

How to resize your photo for GST registration

  1. Take or scan the photo

    Use a recent photo.

  2. Load the preset

    Drop the file into the tool at the top of this page. The "GST registration photo" preset is already set to at most 100 KB, as JPG/JPEG.

  3. Check the result

    Read the before and after sizes: the GST registration photo must end at or under 100,000 bytes. Download it.

  4. Switch to the supporting documents

    Pick the "GST registration supporting documents" preset, set to at most 1 MB as PDF or JPG/JPEG, and repeat with the supporting documents files.

  5. Upload and preview

    Upload the files on the GST registration form and check the preview before you submit; verify the figures with the official notice first.

GST registration compared with similar forms

Of these 5 forms, the GST registration photo limit of 100 KB is the most generous, level with IGNOU and CTET; a file made for a stricter form usually passes a more generous one only if it also meets the minimum and the pixel size.

FormPhoto sizePhoto file sizeSignature file size
GST registration (this page) no pixel size stated at most 100 KB none
ICSI student no pixel size stated 20 KB–50 KB 10 KB–20 KB
IGNOU no pixel size stated at most 100 KB at most 100 KB
CTET 35 × 45 mm 10 KB–100 KB 3 KB–30 KB
Kerala PSC 150 × 200 px at most 30 KB none

Where the GST registration figures come from

Verify with the official GST registration notice before you submit: forms change between application cycles and the check on the live portal is final.

Sources

  1. GST portal user guide: Registration as Tax Deductor at Source, Goods and Services Tax Network (GSTN), checked 31 October 2026: tutorial.gst.gov.in/userguide/registration/Tax_Deductor.htm
  2. Measured by PixelFit with sharp 0.35.5 / libvips 8.18.7 on 31 October 2026, interpolated to each GST registration target size, on this sample: head-and-shoulders portrait, Pete Souza (Official White House photo), public domain: commons.wikimedia.org/wiki/File:President_Barack_Obama.jpg

Frequently asked questions

What is the photo size for GST registration in KB?

The GST registration photo must be at most 100 KB (keep it at or under 100,000 bytes to be safe), as JPG/JPEG. The source gives no pixel size, so the file size and type are what the form checks.

What is the signature size for GST registration?

The GST registration source sets no separate signature upload; only the photo and supporting documents are uploaded.

How do I resize my photo to 100 KB for GST registration?

Open the tool on this page with the GST registration photo preset, drop the file and download the result: it searches JPG quality until the file is under 100 KB. Nothing is uploaded.

Can I upload a PNG or PDF for the GST registration photo?

Only JPG/JPEG; PNG, PDF, HEIC are not listed. The tool can turn a PNG, WebP or (in Safari) HEIC file into JPG while it resizes.

Related

Compress to the GST registration limits

Change the file format

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