OPSC ASO Photo, Signature & PDF Resizer - Free Online Tool
Resize and compress your photo, signature, left thumb impression and certificate PDF to the exact size needed for the OPSC Assistant Section Officer (ASO) online form. Works on your phone, takes seconds, and your files never leave your device. New to the form? Read how to apply for OPSC ASO.
Table of Contents
OPSC ASO Document Resizer
100% on your device - nothing is uploadedDrag the picture to position it. The file below updates automatically.
Need a different size? (other exams or if your notification says something else)
Change the numbers and the file is rebuilt for that tab. Always follow the size written in the official OPSC notification.
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How to Use the Tool (3 Easy Steps)
Choose Photo, Signature, Thumb or PDF at the top of the tool. The required size and KB range are shown for you.
Take a new picture or choose one from your gallery. Drag to position it, use Zoom and Rotate. For signature and thumb keep "Clean paper" ticked to make the paper white.
When all ticks are green, tap Download JPG. Then upload this file on the OPSC application form in the matching box.
OPSC ASO Photo, Signature & Thumb Size
| Document | Size in tool | File size | Format |
|---|---|---|---|
| Passport size photo | 200 × 240 px | 25 - 100 KB | JPG |
| Signature | 140 × 60 px | 10 - 50 KB | JPG |
| Left thumb impression (LTI) | 240 × 240 px | 10 - 50 KB | JPG |
| Certificates (only if a PDF is asked) | A4 pages | 100 - 500 KB |
Tips for a Clear Photo, Signature & Thumb
Photo
- Recent photo, face clear and straight
- Plain light or white background
- Good daylight, no shadow on the face
- No cap or dark glasses
Signature
- Black ink on plain white paper
- Sign inside a clean box, no lines
- Hold the phone straight above the paper
- Keep "Clean paper" ticked in the tool
Left thumb
- Use a blue or black stamp pad
- Press on plain white paper, no smudge
- Take a close, sharp picture
- Keep "Clean paper" ticked in the tool
Upload Errors and Quick Fixes
| Problem | What to do |
|---|---|
| "Unknown error" while uploading | Use the file from this tool (it is a proper JPG). OPSC also advises saving the picture again as .jpg and uploading it once more. |
| File too big / too small | Open the tool, check that all three ticks are green and download again. If your notification gives a different KB range, change it under "Need a different size?". |
| Picture looks blurred | Take a new picture in good light and hold the phone steady. A blurred photo or signature can lead to rejection. |
| Signature looks grey | Tick "Clean paper" so the paper becomes white and the ink stays dark. |
Frequently Asked Questions
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This is an independent tool and is not connected to OPSC. Always follow the official notification and the OPSC application portal for the exact requirements.