PDF won't upload to a government portal: fixes

The application is almost done. One step left: attach the scan. And that is exactly where the portal digs in its heels. The file is "too large", "an invalid type", or it simply will not attach. Whether it is GOV.UK, login.gov, or your local portal, the causes repeat, so a short checklist beats guessing.

The file is over the size limit

Government portals rarely share one cap. Each service sets its own, usually 1 to 10 MB, and the exact number is shown next to the upload field. A certificate or contract scanned at 300 dpi easily weighs more than that.

What to do: run the document through compress PDF and compare the result with the limit shown on the form.

It is not a real PDF

A classic: the file is called scan.pdf, but inside sits a photo or a Word document with a swapped extension. The portal checks the contents, not the name, and rejects it as an invalid type.

What to do: open the file on your computer. If it is an image, build a proper document from it with JPG to PDF. If the service asks for an image instead and you only have a PDF, break it into pictures with PDF to JPG.

Several scans, one upload field

Your ID, a certificate, and a contract were scanned separately, but the form accepts a single attachment. Anyone who has applied for benefits or a school place knows the feeling.

What to do: combine the pages with merge PDF and upload one file. Make sure the pages run in the order the reviewer will read them.

The file is password-protected

Bank statements and some certificates arrive encrypted. The portal cannot open such a document and reports a processing error, even though the file itself is fine.

What to do: if you know the password, remove the protection with unlock PDF and attach the open copy. If not, ask the sender for a version without encryption.

The file is corrupted

The download broke off, and half a document landed on your disk. A PDF like that will not open for you or for the portal.

What to do: download the file again from the source and check that it opens locally. If the original is broken too, try repair PDF.

The file is fine, the portal is not

Sometimes the document is in order and the upload still stalls: the service is overloaded, the session expired, or the mobile app froze mid-send.

What to do: refresh the page and sign in again. If you were sending from the app, try a desktop browser, and the other way round. Portals get busy in the evening; a morning attempt often goes through on the first try.

Checklist before you submit the application

• The file size is under the limit shown next to the upload field.
• It is a real PDF, not a renamed photo.
• All pages sit in one document if the form has one field.
• The file is not password-locked and opens on your computer.
• Every page is readable: nothing upside down or cut off.

If the portal still refuses the file after all that, start with compression: the size limit remains cause number one. The whole run-through takes a couple of minutes, and the application goes out on the first attempt.