Updated · how we check
OCI photo and signature size
The OCI form takes a photo of 630 × 810 px, at most 200 KB and a signature file of at most 100 KB, both as JPG/JPEG. A file of 200,000 bytes or less passes whether the portal counts 1 KB as 1,000 or 1,024 bytes.
OCI photo
JPG · under 200 KB (at most 200,000 bytes) · 630x810 px · white background
PixelFit aims at 200,000 bytes or less, so the file passes whether the form counts 1 KB as 1,000 or 1,024 bytes.
Fit, background and padding crop to fill · white background
Saving presets is part of Pro.
The result appears here: the exact byte count, pixel size and quality, the size before and after, a preview and a download button.
The batch kit (one ZIP for up to 500 photos, several photos merged into one PDF) is part of Pro.
OCI upload specifications
Values for the OCI card online application (Embassy of India, Paris guidelines), copied from Practical guidelines for uploading photo and signature (Embassy of India, Paris, 29 April 2026), checked 31 October 2026; "not stated" means the source gives no figure for it.
| Upload | Pixel size | Print size | File size | Format | Background |
|---|---|---|---|---|---|
| Photo | 630 × 810 px | not stated | at most 200 KB | JPG/JPEG | solid white |
| Signature | not stated | not stated | at most 100 KB | JPG/JPEG | clean white |
OCI sizes in pixels and millimetres
Print sizes become pixels at a resolution (pixels = mm ÷ 25.4 × DPI); pixel sizes become print sizes the other way round. Computed for the OCI uploads at 200 and 300 DPI.
| Upload | Aspect ratio | Megapixels | At 200 DPI | At 300 DPI |
|---|---|---|---|---|
| Photo | 7:9 | 0.510 MP | 80 × 102.9 mm | 53.3 × 68.6 mm |
What the OCI KB limits mean in bytes
The OCI photo limit of 200 KB is 204,800 bytes when 1 KB = 1,024 bytes and 200,000 bytes when 1 KB = 1,000 bytes; a file of 200,000 bytes or less passes either way.
The OCI signature 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.
Estimated JPG file size for OCI uploads
Estimated from sizes measured with sharp 0.35.5 / libvips 8.18.7 on public-domain sample images (31 October 2026), interpolated to each target size. Your own scan can land 30-50% either side, which is why the tool measures the real file.
| Upload | Pixel size used | Quality 60 | Quality 75 | Quality 85 | Quality 95 | Limit |
|---|---|---|---|---|---|---|
| Photo | 630 × 810 px | 45.7 KB | 59.3 KB | 79.3 KB | 144 KB | at most 200 KB |
Will the OCI photo fit the limit?
For the OCI photo at 630 × 810 px, even quality 95, the highest setting estimated here, stays under 200 KB at about 144 KB.
OCI rejection checklist
Upload checks computed from the OCI 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 OCI photo file is no larger than 200 KB (200,000 bytes is safe under both KB definitions).
- Photo: Pixel size is 630 × 810 px.
- Photo: Background: solid white.
- Signature: File type is JPG/JPEG (a PNG or HEIC renamed to .jpg is still rejected).
- Signature: The OCI signature file is no larger than 100 KB (100,000 bytes is safe under both KB definitions).
- Signature: Background: clean white.
How to resize your photo for OCI
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Take or scan the photo
Use a recent photo (background: solid white).
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Load the preset
Drop the file into the tool at the top of this page. The "OCI photo" preset is already set to 630 × 810 px and at most 200 KB, as JPG/JPEG.
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Check the result
Read the before and after sizes: the OCI photo must end at or under 200,000 bytes. Download it.
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Switch to the signature
Pick the "OCI signature" preset, set to at most 100 KB as JPG/JPEG, and repeat with the signature file.
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Upload and preview
Upload the files on the OCI form and check the preview before you submit; verify the figures with the official notice first.
What the OCI source also says
- The limits are phrased as what the portal generally accepts; the OCI portal itself checks the file when you upload.
- Photo: Face occupies 80-85% of the frame, top of hair to chin.
- Signature: Black or dark blue ink; the signature covers 80-85% of the cropped box.
OCI compared with similar forms
Of these 5 forms, the OCI photo limit of 200 KB is the strictest, level with Indonesia e-VOA and Delhi High Court JJA and NIC Scientist-B; a file made for a stricter form usually passes a more generous one only if it also meets the minimum and the pixel size.
| Form | Photo size | Photo file size | Signature file size |
|---|---|---|---|
| OCI (this page) | 630 × 810 px | at most 200 KB | at most 100 KB |
| Indonesia e-VOA | no pixel size stated | at most 200 KB | none |
| India e-Visa | square (height equal to width) | 10 KB–1 MB | none |
| Delhi High Court JJA | 35 × 45 mm | 100 KB–200 KB | 50 KB–150 KB |
| NIC Scientist-B | no pixel size stated | 50 KB–200 KB | 10 KB–50 KB |
Where the OCI figures come from
Verify with the official OCI notice before you submit: forms change between application cycles and the check on the live portal is final.
Sources
- Practical guidelines for uploading photo and signature (Embassy of India, Paris, 29 April 2026), Embassy of India, Paris (Ministry of External Affairs), checked 31 October 2026: eoiparis.gov.in/content/Practical_Guidelines_Uploading_Ph…
- Measured by PixelFit with sharp 0.35.5 / libvips 8.18.7 on 31 October 2026, interpolated to each OCI 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 OCI in KB?
The OCI photo must be at most 200 KB (keep it at or under 200,000 bytes to be safe), 630 × 810 px, as JPG/JPEG.
What is the signature size for OCI?
The OCI signature must be at most 100 KB, as JPG/JPEG on clean white.
How do I resize my photo to 200 KB for OCI?
Open the tool on this page with the OCI photo preset, drop the file and download the result: it searches JPG quality until the file is under 200 KB; at 630 × 810 px expect about 79.3 KB at quality 85. Nothing is uploaded.
What pixel size should the OCI photo be?
630 × 810 px.
Can I upload a PNG or PDF for the OCI 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
Similar forms
- Indonesia e-VOA photo size at most 200 KB
- India e-Visa photo size 10 KB–1 MB
- Delhi High Court JJA photo and signature size 100 KB–200 KB
- NIC Scientist-B photo and signature size 50 KB–200 KB
- UPSC photo and signature size 20 KB–300 KB
- CTET photo and signature size 10 KB–100 KB
Compress to the OCI limits
- Compress an image to 200 KB OCI photo limit at most 200 KB
- Compress an image to 100 KB OCI signature limit at most 100 KB
Resize to the exact size
Change the file format
- PNG to JPG OCI accepts JPG/JPEG
- WEBP to JPG OCI accepts JPG/JPEG
- HEIC to JPG OCI accepts JPG/JPEG