Image Upload Rejected? Check These Problems First

Read the message before changing the file

Upload errors can refer to format, size, dimensions, account limits, or the service itself. Record the wording and compare it with the form’s instructions. An “unsupported file” error should not automatically send you back to the compressor to lower quality.

If the message is vague, check the documented requirements first. Make a small list of accepted extensions, maximum bytes, required dimensions, and any rules about aspect ratio. Keep that list visible while preparing the replacement.

Check that the selected file is the optimized copy

The most straightforward cause is choosing the original after downloading a smaller version. Check the filename and folder. CorvexsDigital adds an optimized suffix, but your device may also add a number if a file with that name already exists. Open the exact copy you select to confirm it is the one you reviewed.

Do not assume a compressed result replaces the source photo in your library. The tool creates a new file and leaves the original unchanged. A file picker that opens your recent photos may not immediately show the browser’s download folder.

Check format and actual contents

A destination might accept JPG and PNG but reject WebP. Export to an accepted format using a real converter. Changing only the filename extension does not rewrite the encoded image and can create another mismatch.

CorvexsDigital checks supported file signatures before processing. HEIC, GIF, SVG, and PDF input are also supported: PDF exports one page as an image and GIF exports a still frame. A damaged file or unsupported codec may still need a different preparation workflow.

Check bytes and dimensions independently

If the destination says 200 KB, aim below the limit and verify the result. Rounded file displays or differing unit conventions can create confusion near a boundary. CorvexsDigital uses decimal KB. A comfortable margin can help, provided other requirements are still met.

Then check width, height, and ratio. An image can be small enough in bytes but too narrow in pixels. Automatic dimension reduction can help meet a size target while making the result unsuitable for a minimum-resolution requirement. If a square crop is required, use an editor; proportional resizing alone will not create it.

Separate file problems from service problems

If a valid file is still rejected, try the service’s documented troubleshooting steps. A timed-out session, temporary outage, connection problem, or account restriction may be involved. Avoid changing a perfectly usable image endlessly when the failure occurs before the service even evaluates it.

Keep the error message and a record of the file’s format, size, and dimensions for a support request. Do not include private images or account secrets unless the service’s trusted support process genuinely requires them.

A clean retry

Return to the original, export one clearly named compatible file, inspect it, and retry once through the normal form. If that works, preserve the known-good export. If it does not, use the remaining evidence to narrow the cause. Compression is useful when bytes are the problem; it cannot fix every reason a service refuses an upload.

Questions & answers

Your next step

Check format, bytes, dimensions, and file selection in that order. Keep the original while troubleshooting.