PRACTICAL GUIDE
Image upload rejected? 5 things to check
A photo upload can fail for more than file size. Unsupported formats, oversized pixel dimensions, unusual file names, and browser permissions can also stop an upload.
Step-by-step
- Read the destination upload rules for allowed formats and maximum size.
- Convert HEIC or WebP to JPG or PNG if needed.
- Compress a large file, and use Image Resizer when the destination limits pixel dimensions.
Check before using the result
After conversion, open the actual result instead of relying only on its extension. Keep important originals separately.
Open the free tool →Frequently asked questions
Why do iPhone photos fail to upload?
The service might not accept HEIC. Convert the photo to JPG and try again.
Can the file name cause a problem?
Some services struggle with long or unusual file names. Try a short name using letters and numbers.
About this guide
This guide is written for a practical workflow. Keep an original copy of important files and review downloaded output before sharing it with another person or service.
Check in order even when there is no error message
A rejected upload is not always a file-size problem. Check format, file size, pixel dimensions, file name, and browser permissions one at a time to isolate the cause.
- Convert HEIC or WebP to JPG or PNG.
- Use compression for a file-size limit and resizing for a pixel limit; they solve different problems.
- Try a result with a short file name using letters and numbers.