Filling an SSC, UPSC, or banking exam form and the portal keeps rejecting your photo? You are not alone. Almost every Indian government exam portal sets a strict file size limit — usually 20KB to 50KB for photographs and 10KB to 20KB for signatures. If your file is even 1KB over the limit, the upload fails.
The good news: you can compress any photo to exactly 50KB (or any size you need) online, for free, in under 30 seconds. No software, no signup, no watermark. This guide shows you exactly how, plus the official photo and signature specifications for every major Indian exam in 2026.
Why exam portals reject your photo
Government exam portals run automated checks on every upload. Your photo gets rejected if it fails any one of these:
- File size too large — the most common reason. A photo straight from your phone camera is usually 2MB to 5MB, which is 40 to 100 times the allowed limit.
- Wrong dimensions — most exams need specific pixel dimensions, not just any size.
- Wrong format — almost all portals accept only JPG or JPEG. PNG and HEIC (iPhone default) files get rejected.
- Background not plain — most exams require a plain white or light-coloured background.
File size is the problem that stops most candidates, and it is also the easiest to fix.
How to compress a photo to 50KB — step by step
You do not need Photoshop or any paid app. Using a free online compressor, the process takes under a minute:
- Open the tool — go to the free Image Compressor.
- Upload your photo — click or drag your JPG, JPEG, or PNG file.
- Choose "Target Size" mode — then click the 50 KB preset button. (You can also type any custom size like 35KB or 80KB.)
- Click compress — the tool automatically finds the highest quality that fits under 50KB.
- Download — your compressed JPG downloads instantly, ready to upload.
The entire process runs inside your browser, so your photo is never uploaded to any server. This matters when you are handling documents like Aadhaar, PAN, or your own photograph.
Exam photo and signature size requirements 2026
Different exams have different rules. Here are the official specifications for the major Indian exams:
| Exam | Photo Size | Photo Dimensions | Signature Size | Format |
|---|---|---|---|---|
| SSC CGL / CHSL / GD | 20KB – 50KB | 3.5 × 4.5 cm (200 × 230 px) | 10KB – 20KB | JPEG |
| UPSC Civil Services | 20KB – 300KB | 350 × 350 px | 20KB – 100KB | JPG |
| IBPS / SBI Bank Exams | 20KB – 50KB | 200 × 230 px | 10KB – 20KB | JPEG |
| RRB / Railway Exams | 15KB – 40KB | 3.5 × 4.5 cm | 10KB – 30KB | JPEG |
| JEE Main (NTA) | 10KB – 200KB | 3.5 × 4.5 cm | 10KB – 100KB | JPG / JPEG |
| NEET (NTA) | 10KB – 200KB | 3.5 × 4.5 cm | 4KB – 30KB | JPG / JPEG |
| State PSC (UPPSC, MPPSC) | 20KB – 50KB | Varies by state | 10KB – 30KB | JPEG |
Important: Specifications change from year to year and vary between notifications. Always check the official notification PDF for your exam before uploading.
How to compress a signature to 20KB
Signatures are usually easier because they are simple black-on-white images, but the size limits are tighter — often just 10KB to 20KB.
- Sign on plain white paper using a black or blue pen (most exams specify black ink).
- Take a photo in good light, directly from above, with no shadows.
- Crop tightly so only the signature is visible, with minimal white space around it.
- Open the Image Compressor, pick 20 KB as target size, and compress.
If your signature also needs specific dimensions (SSC asks for 4.0 × 2.0 cm), resize it first with the Image Resizer, then compress.
Tips to keep your photo clear after compression
Compressing to 50KB does reduce quality, but these habits keep your photo sharp enough to pass verification:
- Start with a good photo — take it in natural daylight, facing a window. Poor lighting means a blurry result after compression.
- Use a plain background — a white or light-coloured wall. Busy backgrounds waste file size on unnecessary detail.
- Crop before compressing — remove extra background so more of the file size goes into your face.
- Resize first, then compress — if the exam needs 200 × 230 px, resize to that size first. A smaller image needs less compression to hit 50KB, so it stays clearer.
- Do not compress an already-compressed file repeatedly — always start from the original photo.
What if the portal still rejects your photo?
If the size is correct but the upload still fails, check these:
File format is wrong
iPhones save photos as HEIC by default, which almost every Indian portal rejects. Convert to JPG first, or change your iPhone setting to Settings → Camera → Formats → Most Compatible.
File name has spaces or special characters
Rename your file to something simple like photo.jpg or signature.jpg. Avoid names like my photo (1).jpg.
Dimensions are wrong
Some portals check pixel dimensions separately from file size. Use the Image Resizer to set exact dimensions, then compress.
The portal wants a PDF, not an image
A few state portals ask for documents as PDF. Use the Image to PDF converter, and if the PDF is too large, run it through the PDF Compressor.
Frequently asked questions
How do I compress a photo to exactly 50KB?
Open the Image Compressor, upload your photo, select Target Size mode, click the 50 KB preset, and compress. The tool automatically adjusts quality so the final file stays under 50KB.
Will my photo look blurry after compressing to 50KB?
A good compressor keeps the highest quality that fits your target size. For a standard passport-style photo at 200 × 230 pixels, 50KB is enough for a clear, acceptable result. Starting with a well-lit, cropped photo makes a big difference.
Is it safe to compress my photo online?
With a browser-based tool, yes. Compression happens on your own device and your photo is never uploaded to any server, so your personal documents stay private. Avoid tools that require you to create an account before compressing.
Can I compress a photo to 20KB for my signature?
Yes. Select the 20 KB preset, or type any custom size. Signatures compress well because they are simple black-and-white images.
Which format should I use — JPG or PNG?
Always JPG or JPEG for exam forms. PNG files are much larger and most portals reject them. If you have a PNG, the compressor converts it to JPG automatically.
Do I need to install any app?
No. The tool works in any browser on phone or laptop — nothing to download or install.
Is the tool really free?
Yes. The Image Compressor is completely free with no signup, no watermark, and no daily limit.
Compress your exam photo now
A rejected photo upload should not cost you an exam form deadline. Whether you need 20KB, 50KB, or 100KB, you can get the exact size in seconds — free, private, and without installing anything.
Try the free Image Compressor and get your photo ready for SSC, UPSC, IBPS, railway, or any exam portal. And if you are also preparing job applications, our free Resume Builder gives you an ATS-friendly PDF resume in minutes.