Only JPG/JPEG Allowed? Invalid Image Format Fix — Free Online (2026)
Portal message: “Invalid image format”, “Only JPG/JPEG allowed”, or “Unsupported file format”? Your photo looks fine on the phone — but the form only accepts .jpg files under a KB limit. This guide fixes format + size in the browser (free, no signup).
Quick answer: “Invalid image format” usually means PNG, HEIC, or WEBP — convert to JPG with Convert Image or HEIC to JPG, then re-upload.
Why JPG-only errors happen
- PNG / WEBP from screenshots or WhatsApp — convert with Convert Image
- HEIC from iPhone — use HEIC to JPG
- Wrong extension — file named .jpg but actually PNG inside; re-export as JPG
- PDF scan — portals want photo JPG, not document PDF
Fix invalid format in 3 steps
- Open Convert Image → output JPG/JPEG.
- If form also shows KB limit (50KB, 100KB), run Compress to KB.
- Upload the new .jpg file in Chrome — avoid renaming extension only.
Common portals (JPG + KB)
SSC, UPSC, Railway, IBPS, NEET/NTA, state PSC, NSP scholarship, PAN, and university admission forms — almost all specify JPG/JPEG in the notification PDF.
Related: Photo size too large · HEIC to JPG iPhone · All upload errors
What “invalid format” usually means
| Your file | Portal sees | Fix |
|---|---|---|
| .heic from iPhone | Unsupported / not JPG | HEIC to JPG |
| .png screenshot | PNG not allowed | Convert Image → JPG |
| .jpg name but PNG data | Still invalid | Re-export as real JPEG, do not rename only |
Step-by-step: JPG-only upload that passes
- Open the official notification PDF and write down format (JPG/JPEG), max KB, and pixel dimensions.
- Start from the clearest source photo — camera roll original, not a forwarded WhatsApp image.
- Convert format with Convert Image or HEIC to JPG until the file is true JPEG.
- If pixels are specified, use DPI Photo Converter or Passport Photo Maker before size compression.
- Run Compress to KB with the exact limit from the notice (50KB, 100KB, etc.).
- Upload in Chrome on desktop or mobile; if it fails, check file properties on PC to confirm MIME type is JPEG.
Common mistakes
- Fixing KB first while the file is still PNG or HEIC — format error will remain.
- Using PDF scans in the photo field — many portals want a separate JPG photo upload.
- Uploading animated or edited WEBP from messaging apps.
- Ignoring signature vs photo format rules — some forms want PNG for signature and JPG for photo.
- Trusting third-party “spec lists” instead of the current official PDF.
Related guides
- Online form photo upload error messages
- Reduce photo size to 50KB / 100KB
- Government form photo upload India
Reminder: SSC, UPSC, NEET, IBPS, and state portals update instructions each notification — always verify on the official website before final payment and submit.
What portals actually check
Validators read file headers, not just extensions. Renaming file.jpg while content stays PNG fails.
Fix paths by source
| Source | Tool |
|---|---|
| iPhone HEIC | HEIC to JPG |
| Screenshot PNG | Convert Image |
| Canva WEBP | Convert Image |
Common mistakes
- Uploading PDF into photo field.
- Using “Save as JPG” in paint without flattening layers.
- Double extension photo.jpg.png.
FAQ
Why only JPG or JPEG allowed?
Legacy government portals standardize on JPG for photos.
How to fix invalid image format free?
Convert to JPG, then compress to KB if needed.
iPhone invalid format?
Convert HEIC to JPG first.
PNG screenshot for form?
Convert PNG → JPG, then compress.
Still rejected after JPG?
Check pixels (200×230, 35×45 mm) — DPI converter.