SBI PO Thumb Impression 2026 required candidates to scan their left-hand thumb impression on white paper using black or blue ink and upload it as a JPG/JPEG image, preferably 240 × 240 pixels with a file size between 20 KB and 50 KB.
SBI PO Thumb Impression 2026: Size & Requirements
Left thumb impression
Preferred image size
Prescribed upload range
Required image format
How Should the SBI PO Left Thumb Impression Look?
Use the prescribed left thumb unless an applicable exception applies.
Create a clear impression using black or blue ink.
Place the thumb impression clearly on clean white paper.
The impression should remain clearly visible in the final image.
SBI PO Thumb Impression Size at a Glance
The preferred dimensions were 240 × 240 pixels at approximately 200 DPI, equivalent to an approximate physical size of 3 cm × 3 cm. The final image had to remain within the prescribed 20–50 KB file-size range.
Avoid a Smudged Thumb Impression
Use enough ink to create a visible impression, but avoid excessive ink that can blur the thumb pattern. Allow the impression to dry before scanning or photographing the paper, and check that the final image remains clear after cropping or compression.
Thumb Impression Image Above the Required File Size?
If an application image exceeds its required upload limit, reduce the file size carefully while making sure the thumb impression remains clearly visible in the final image.
🗜️ Compress Image →SBI PO 2026 Applications Are Closed
The SBI PO 2026 online registration window ran from 18 June to 8 July 2026. This page remains a reference for the thumb impression requirements prescribed for the 2026 recruitment cycle.
Prepare the Rest of Your Application Documents
Photo & Signature Size
Check dimensions, KB limits and live-photo requirements.
Handwritten Declaration
Check the prescribed text, dimensions and file-size requirements.
SBI PO Documents Required
Review application uploads, exam-day documents and certificates.
How to Prepare SBI PO Left Thumb Impression
To prepare the SBI PO left thumb impression, candidates should create a clear impression of the left thumb on clean white paper using black or blue ink. The impression should then be scanned or photographed, cropped carefully and saved as a clear JPG/JPEG image within the prescribed upload specifications.
How to Create an Upload-Ready Thumb Impression
Take a Clean Sheet of White Paper
Use plain white paper without lines, patterns or marks. A clean background makes it easier to capture and crop the thumb impression clearly.
Use Black or Blue Ink
Apply black or blue ink evenly to the left thumb. Avoid using excessive ink, as too much ink can create a dark or smudged impression.
Place Your Left Thumb on the Paper
Press the left thumb gently and evenly onto the white paper. Avoid moving or sliding the thumb while creating the impression, as this may cause smudging.
Check the Impression Before Scanning
Look at the impression carefully. It should be clearly visible and should not appear excessively dark, faint or smudged. If the result is unclear, create another impression on a clean area of the paper.
Scan or Photograph the Thumb Impression
Create a clear digital image of the completed impression. If using a phone camera, keep the paper flat, use adequate lighting and capture the image directly from above to avoid unnecessary distortion.
Crop the Image Carefully
Crop unnecessary white space around the impression while keeping the complete thumb impression visible. Do not crop so tightly that any part of the impression is removed.
Prepare the Final JPG/JPEG Image
The preferred dimensions were 240 × 240 pixels at approximately 200 DPI, with an approximate physical size of 3 cm × 3 cm. The final JPG/JPEG image should be between 20 KB and 50 KB.
Preview the Image Before Uploading
Open the final image and check it at normal size and while zoomed in. Make sure the correct impression is visible and that resizing or compression has not made it excessively blurred.
Ink → Impress → Capture → Crop → Check → Upload
Apply black or blue ink evenly to the left thumb.
Create a clear impression on clean white paper.
Scan or photograph the impression clearly.
Remove excess space without cutting the impression.
Verify clarity, dimensions, format and file size.
Preview the correct image before final submission.
What Makes a Good Thumb Impression Image?
Good Thumb Impression
- Created using the prescribed thumb
- Black or blue ink used
- Clean white background
- Complete impression visible
- Not excessively dark or faint
- No obvious smudging
- Image is properly cropped
- Final file remains clear
Avoid These Problems
- Using the wrong thumb without an applicable exception
- Moving the thumb while making the impression
- Applying excessive ink
- Using too little ink
- Uploading a blurred photograph
- Cropping part of the impression
- Heavy shadows across the paper
- Excessive image compression
Create More Than One Impression Before Choosing the Best
Instead of relying on the first attempt, create a few separate impressions on the white paper. Choose the clearest one for scanning or photographing. This can help you avoid using an image that is faint, overly dark or accidentally smudged.
Final Image Above the Required KB Limit?
If an application image is larger than the permitted file size, reduce it carefully while preserving enough image quality for the impression to remain clearly visible.
🗜️ Compress Image →Understand the Exact Thumb Impression Size & Upload Format
Check how the 240 × 240 pixel dimensions, 20–50 KB file-size range, JPG/JPEG format and 200 DPI specification apply to the final upload image.
SBI PO Thumb Impression Size & Upload Format
The SBI PO Thumb Impression 2026 image had to meet the prescribed technical requirements before upload. The preferred dimensions were 240 × 240 pixels at 200 DPI, with an approximate physical size of 3 cm × 3 cm. The final image was required in JPG/JPEG format with a file size between 20 KB and 50 KB.
SBI PO Thumb Impression Specifications at a Glance
Prescribed thumb impression
Preferred image dimensions
Prescribed upload range
Required image format
Preferred scan resolution
Approximate preferred size
What the SBI PO Thumb Impression Size Rules Mean
240 × 240 Pixel Dimensions
The preferred dimensions create a square image suitable for the thumb impression. Crop the image carefully so that the complete impression remains visible without excessive empty space around it.
20–50 KB File Size
The final thumb impression image should remain within the prescribed file-size range. If the image exceeds the upper limit, reduce its size without making the impression excessively blurred or unclear.
JPG or JPEG Format
The final scanned thumb impression should be saved as a JPG/JPEG image. Check the file extension before selecting the image on the application upload screen.
200 DPI Resolution
The preferred specification was 200 DPI. Regardless of the scanning method used, the final image should clearly show the impression and should not appear excessively pixelated after processing.
What If the Thumb Impression Is Outside 20–50 KB?
📈 Image Is Above 50 KB
Reduce the image file size carefully. After compression, open the final file and confirm that the thumb impression is still clearly visible and has not become excessively blurred.
📉 Image Is Below 20 KB
Check whether the image has been compressed too heavily or saved at very low quality. If the impression appears unclear, create a better-quality image before attempting to upload it.
Prepare the Final Thumb Impression Image in 5 Steps
Select a thumb impression that is complete and free from obvious smudging.
Create a clear digital image with a clean white background.
Remove excess white space while keeping the complete impression visible.
Confirm the dimensions, JPG/JPEG format and 20–50 KB file-size range.
Verify that the correct thumb impression appears clearly after upload.
Thumb Impression Image Above 50 KB?
If an application image exceeds its permitted file-size limit, use the QuickPDFNow Compress Image tool to reduce its size. Check the processed image carefully before uploading to ensure the impression remains clear.
🗜️ Compress Image →Don’t Focus Only on Reaching the Correct KB
Meeting the file-size requirement is only one part of preparing the image. The final thumb impression should also be complete and clearly visible. Excessive compression, poor lighting or an overly tight crop can make an otherwise correctly sized image unsuitable.
Final SBI PO Thumb Impression Checklist
Correct thumb impression used
Black or blue ink used
Clean white paper background
Impression is not visibly smudged
Complete impression is visible
Image saved as JPG/JPEG
Preferred size is 240 × 240 px
File size is between 20 KB and 50 KB
What If You Don’t Have a Left Thumb?
The SBI instructions also address candidates who do not have a left thumb. The next section explains which finger may be used instead and how the substituted finger should be specified.
What If You Don’t Have a Left Thumb?
For the SBI PO Thumb Impression 2026 requirement, candidates were normally required to upload a left-hand thumb impression. However, the official SBI PO notification provides a specific alternative for candidates who do not have a left thumb.
Use Your Right-Hand Thumb If the Left Thumb Is Unavailable
According to the SBI PO 2026 notification, a candidate who does not have a left-hand thumb may use their right-hand thumb impression for the application.
Do not automatically substitute another finger unless SBI specifically instructs you to do so. For this recruitment cycle, follow the alternative stated in the official notification.
📄 Verify in the Official SBI PO Notification →Quick SBI PO Thumb Impression Rule
Use the left-hand thumb impression when your left thumb is available.
Use the right-hand thumb impression according to the alternative stated in the notification.
Do Not Copy Thumb-Exception Rules from Another Recruitment
Different recruitment notifications can prescribe different alternatives when a left thumb is unavailable. The SBI PO 2026 notification specifically mentions the right-hand thumb as the alternative. Always follow the instructions for the recruitment you are actually applying for.
Common SBI PO Thumb Impression Mistakes to Avoid
Using the Wrong Thumb
Using a different thumb without following the applicable official exception can make the uploaded document inconsistent with the prescribed requirement.
Check:Use the left thumb normally. Use the right thumb only when the left thumb is unavailable as provided in the notification.
Uploading a Smudged Impression
Too much ink or moving the thumb while making the impression can create a dark or unclear image.
Check:Make multiple impressions and select the clearest one before scanning or photographing.
Using a Very Faint Impression
Too little ink can create an impression that becomes difficult to see after scanning or compression.
Check:Use enough black or blue ink to make the impression clearly visible against the white paper.
Cropping Part of the Impression
An overly tight crop can remove part of the thumb impression from the final image.
Check:Remove unnecessary white space while keeping the complete impression visible.
Ignoring the Preferred Dimensions
The preferred SBI PO thumb impression dimensions were 240 × 240 pixels.
Check:Prepare the image within the prescribed specifications without distorting the impression.
File Size Outside 20–50 KB
A file that is too large may not satisfy the upload requirement, while excessive compression can reduce clarity.
Check:Keep the final image between 20 KB and 50 KB while ensuring the impression remains visible.
Saving in the Wrong Format
The thumb impression image was required in JPG/JPEG format.
Check:Verify the file extension before selecting the image for upload.
Skipping the Final Preview
Cropping, resizing or compression can affect how the final impression appears after processing.
Check:Open the final image and inspect the uploaded preview before completing submission.
Is Your Thumb Impression Ready?
Left thumb used, or right thumb if left thumb is unavailable
Black or blue ink used
Clean white paper background
Complete impression is clearly visible
No obvious smudging or excessive faintness
Preferred dimensions are 240 × 240 px
File size is between 20 KB and 50 KB
File is saved in JPG/JPEG format
Need to Reduce the Thumb Impression File Size?
If an application image exceeds the permitted KB limit, compress it carefully and inspect the final result before upload. The complete impression should remain clearly visible.
🗜️ Compress Image →SBI PO Thumb Impression 2026 FAQs
Here are answers to common questions about the SBI PO Thumb Impression 2026, including the required thumb, image dimensions, file-size limit, ink colour and upload format.
Which thumb impression is required for SBI PO 2026?
Candidates were normally required to upload their left-hand thumb impression. If a candidate did not have a left thumb, the SBI PO 2026 notification allowed the use of the right-hand thumb impression.
What is the SBI PO thumb impression size?
The preferred SBI PO thumb impression size was 240 × 240 pixels at approximately 200 DPI, with an approximate physical size of 3 cm × 3 cm.
What is the SBI PO thumb impression file size?
The prescribed SBI PO thumb impression file size was between 20 KB and 50 KB. The final image should remain clear after any resizing or compression.
Which file format is required for the thumb impression?
The scanned thumb impression was required in JPG/JPEG format. Check the final file extension before selecting the image on the application upload screen.
Which ink should I use for the SBI PO thumb impression?
The thumb impression should be made using black or blue ink on white paper. Make sure the impression is clearly visible and not excessively faint or smudged.
What if I do not have a left thumb?
According to the SBI PO 2026 instructions, a candidate who does not have a left thumb may use their right-hand thumb impression. Candidates should follow the specific instructions given in the official notification for their recruitment cycle.
Can I upload a smudged thumb impression?
Candidates should avoid uploading a visibly smudged impression. Create multiple impressions if necessary and choose the clearest one before scanning or photographing the paper.
What if my thumb impression image is above 50 KB?
If an application image exceeds the permitted file-size limit, reduce its size carefully while preserving clarity. You can use the QuickPDFNow Compress Image tool and inspect the processed image before uploading.
Should I preview the thumb impression after uploading?
Yes. Check the uploaded preview to confirm that you selected the correct image, the complete impression is visible and image processing has not made it excessively blurred.
Continue Your SBI PO 2026 Preparation
Use the main recruitment page and focused document-preparation guides to navigate the complete SBI PO 2026 application and recruitment journey.
SBI PO 2026 Recruitment
Follow important dates, recruitment stages and the complete lifecycle.
View Recruitment Guide →How to Fill SBI PO Application
Review registration, document upload, payment and submission steps.
View Application Guide →SBI PO Documents Required
Check application uploads, exam-day documents and later-stage certificates.
View Documents Checklist →Photo & Signature Size
Check dimensions, file-size limits and photo preparation requirements.
Check Image Requirements →Handwritten Declaration
Check the prescribed declaration text, dimensions and upload requirements.
View Declaration Guide →Banking Recruitment Hub
Explore SBI, IBPS and other banking recruitment and document guides.
Explore Banking Guides →Prepare Your Application Images Before You Upload
Use the relevant QuickPDFNow tools to prepare exam images and reduce oversized files before starting your next application.
Compress Image
Reduce oversized application images while checking that the final image remains clear.
Compress an Image →Exam Photo & Signature Resizer
Preparing your photo and signature too? Create exam-ready images with target dimensions and file-size requirements.
Prepare Exam Images →Applications Are Closed, but the Recruitment Lifecycle Continues
The SBI PO 2026 online application period ran from 18 June to 8 July 2026. Follow the main recruitment page for the remaining stages and related recruitment information.
This guide is based on the thumb impression and document-upload instructions provided in SBI Probationary Officer Advertisement No. CRPD/PO/2026-27/09. Candidates should verify recruitment-specific requirements using the SBI PO 2026 notification PDF and the official SBI Careers portal.