Large scans
ID scans, address proof, or police certificates were saved at high resolution.
Background check upload guide
Compress Background Check Documents for Upload
Background check portals often ask for ID proof, address proof, employment records, police verification documents, consent forms, and certificates. Upload limits can reject large scanned PDFs.
Last verified: July 18, 2026. Background check upload limits vary by provider, employer, country, check type, and document field. Use the file-size and format prompt shown in the live workflow.
Install onceBrowser workflowNo server storage
Why the upload failed
Upload errors usually come from files that are just over the limit, exported in the wrong format, or created from high-resolution scans and phone photos.
Upload cap
The verification provider has separate limits for each upload field.
Portal mismatch
The PDF includes extra pages or image-heavy scans.
Manual fix, then permanent fix
Upload only requested pages, compress carefully, and keep document numbers, names, addresses, and signatures readable.
Auto Compress helps prepare smaller background check files in Chrome before the destination portal receives them.
Check the prompt
Use the latest file-size and format rule shown by the upload portal.
Prepare a smaller file
Compress carefully so the document remains readable.
Upload normally
The destination website receives the smaller file. Auto Compress does not store it for compression.
Related guides
More file upload fixes
One extension for recurring upload limits