What happens if I upload the wrong file type or it’s too big?
File Storage & Document Formats
Uploaded the wrong file type or a file that’s too big? CertNudge detects issues instantly and shows a clear message so you can fix and retry.
What Triggers an Upload Rejection
5 MB
File Too Large
Maximum upload size is 5 MB.
Type
Unsupported Format
We accept PDF, JPG, or PNG files.
MIME
Wrong Extension/MIME
Renaming a Word file to “.pdf” won’t pass validation.
How CertNudge Responds
- Client-side validation: checks size and type before the file leaves your browser.
- Server re-validation: double-checks and blocks any invalid files that slip through.
- Clear error message: “Upload failed: file must be PDF, JPG, or PNG and under 5 MB.”
- No partial saves: nothing is stored until all checks pass.
How to Fix It
Reduce File Size
- Export or re-scan at a lower quality/ DPI.
- Use a PDF/JPG compressor (e.g. online tools) to get under 5 MB.
- For photos, save as JPG rather than PNG to reduce size.
Use a Supported Format
- Save or export the document as PDF, JPG, or PNG.
- Ensure the file’s actual type matches its extension (no renaming tricks).
- When ready, click Retry — your upload will go through instantly if valid.
Fast, Helpful Feedback
Validation happens immediately and explains exactly what to change, keeping your documents compliant and your workflow smooth.