Compress Your Photo to 20KB for SSC GD Constable 2026
SSC GD Constable is one of the few major exams where 20KB is the hard ceiling, not just a recommendation. The OTRP portal at ssc.gov.in rejects any photo above 20KB the moment you click Upload — before the form even submits. Use the free tool below to hit the 10–20KB range in seconds. Your photo never leaves your device.
What You Need to Know
Most exam portals accept photos up to 50KB. SSC GD Constable is different — the notification specifies 10KB minimum and 20KB maximum for the photograph field. The OTRP (One Time Registration Portal) validates file size immediately on upload and shows 'File size exceeds the 20KB limit' if you go over. The signature field has its own ceiling of 12KB. This same OTRP system is used for SSC CHSL, SSC MTS, SSC CPO, and other SSC exams — so the 20KB limit applies across all SSC registrations. JPG (JPEG) is the only accepted format; the portal rejects PNG files outright even if they are under 20KB.
How It Works
Step 1: Open the 20KB compressor below
The tool runs entirely in your browser — no account, no upload to any server. Click to start.
Step 2: Upload your passport-style photo
Select a front-facing JPG or PNG with a white background. SSC GD requires a plain white background — coloured or patterned walls get rejected at document verification.
Step 3: Confirm the output is 10–20KB
The tool iterates until the file lands inside the SSC OTRP window. Watch the size indicator — aim for 18–19KB to leave a small buffer below the 20KB ceiling.
Step 4: Save the file as JPG
Download the result. If your original was a PNG, the compressor outputs JPG automatically. Rename the file to something like photo.jpg before uploading — some browsers save it as photo.jpeg which also works.
Step 5: Upload to the SSC OTRP Registration page
Log in to ssc.gov.in → OTRP → New Registration or Edit Profile → Photograph field. Select your prepared file. The portal accepts it immediately when the JPG is under 20KB.
Benefits
- Targets the strict 10–20KB band required by SSC GD Constable OTRP
- Outputs JPG — the only format SSC OTRP accepts (PNG uploads are rejected)
- White-background photos compress smaller, leaving more clarity for face detail
- Preview before download — confirm face is recognisable before OTRP upload
- Browser-only — photo never leaves your device, unlike upload-based compressors
- Works on the phone you use to fill the SSC registration form
- Free, no account, no watermarks
Pro Tip
Photograph yourself against a plain white wall with even natural light facing you. White backgrounds compress to almost nothing, leaving more of the 20KB budget for your face — making the result clearer at this tight size. The OTRP requires JPG format, so our tool converts PNG inputs to JPG automatically before compressing.
Frequently Asked Questions
Why does SSC GD Constable have a 20KB limit when most exams allow 50KB?
SSC GD Constable routes through the OTRP (One Time Registration Portal), which sets a fixed photo specification of 10KB minimum and 20KB maximum across all SSC exams. IBPS and NEET portals are built on different systems with higher limits. Because OTRP is used for millions of SSC applications simultaneously, the tighter file size limit helps the portal handle uploads without errors.
The SSC OTRP says 'Invalid file type' even after I compressed to 20KB — what's wrong?
The OTRP only accepts JPG (JPEG) format. If you uploaded a PNG file — even one renamed to .jpg — the portal detects the actual format and rejects it. Use our tool, which automatically converts PNG and WebP inputs to true JPG before compressing. Download the file, check it opens as a JPEG in your photo viewer, then try uploading again.
My photo is 21KB — will the SSC portal accept it?
No. The OTRP portal validates exact file size before submission and rejects anything above 20KB. Even 20.1KB triggers the error message. Target 18–19KB to leave a safe buffer. Our compressor iterates until it hits this range consistently.
Is the 20KB limit for the signature field too?
No — the signature has a separate limit. SSC GD Constable requires: photograph 10–20KB in JPG, and signature 1–12KB in JPG. Both must be JPG. You can use this same compressor with a target of 10KB for your signature image.
Can I reuse the same photo for all SSC exams or do I need separate photos?
OTRP stores one profile photo that applies to all SSC exams you register for. If you update your OTRP photo, it updates across all your SSC registrations. Make sure the photo you upload meets the 10–20KB JPG requirement — it will appear on every admit card generated from that OTRP profile.