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Troubleshooting

Invalid File Format Error in Photo Upload: How to Fix It

By ExamPhotoTool.app · Updated · 6 min read

Quick answer

Invalid format means the file type is not one the portal accepts, usually because it is HEIC, PNG or WebP rather than JPG or JPEG. Re-export the image as a real JPG with the free Photo Resizer, then check the size in KB and upload. Confirm accepted types in the official notification.

Most exam portals accept only JPG or JPEG for photos and signatures, and PDF for documents. Phones increasingly save HEIC or WebP, which look like normal images but fail validation. This guide explains how to find the true format and fix it.

Why does the portal say invalid file format?

  • The image is HEIC or HEIF, the default on many iPhones.
  • The image is PNG or WebP.
  • The file was renamed to .jpg without being converted.
  • The file name has odd characters, double extensions or spaces.
  • The file is corrupted or partly downloaded.

How do I fix an invalid file format error?

  1. Note the accepted format on the upload screen.
  2. Open your image in the Photo Resizer.
  3. Resize to the required pixels and KB, then download the JPG.
  4. Rename the file with a simple name, such as photo.jpg.
  5. Upload it again.
Requirements can change between notifications, so always confirm against the official notification and the portal's own instructions before you upload.

Which formats do exams usually want?

ItemUsual formatNote
PhotoJPG or JPEGCheck the notice for exceptions
SignatureJPG or JPEG-
DocumentsPDFCompress with the PDF Compressor
Thumb and declaration (banking)JPG or JPEG240 x 240 px and 800 x 400 px in our presets

How do I change iPhone photos from HEIC?

On an iPhone, set the camera format to Most Compatible so new photos are JPG. For existing HEIC photos, open them in the resizer and download the result, which will be a JPG.

Why does renaming the extension not work?

Changing .png to .jpg only changes the name. The portal reads the file contents, so it still sees a PNG. Always re-export the image.

What if the format is right but the upload still fails?

  • Check the size range: see file size too large errors.
  • Check pixel dimensions against the notification.
  • Try another browser or clear the cache.
  • Use a shorter file name without special characters.

For exam-specific sizes see the SSC CGL, UPSC, RRB NTPC and NEET pages. Our tools are free, run in your browser, do not upload your files and need no sign-up. Previews are free; watermark-free downloads are paid. See also the step by step upload guide.

Frequently asked questions

Why is my JPG rejected?

It may be a renamed PNG or HEIC, or the size or dimensions are outside the limits.

How do I convert HEIC to JPG?

Open it in the Photo Resizer and download the result as a JPG.

Can I upload a PNG?

Only if the notification says so. Most portals want JPG.

Does the file name matter?

Yes. Use a short name without special characters or double extensions.

Is conversion private?

Yes, it happens in your browser and nothing is uploaded.

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