Common Submission Requirements
Whether you're applying for a job, a university program, or a visa, most submission portals share the same constraints:
- 1.Single file upload. Most portals only accept one PDF file — not multiple attachments. You need to combine all your documents into one.
- 2.File size limits. Common limits are 2MB, 5MB, 10MB, or 25MB. Government portals tend to have the strictest limits (often 2-5MB).
- 3.Specific document order. Many applications list the exact order they want documents in. Not following this order can result in delays or rejection.
- 4.PDF format only. Most portals require PDF specifically (not Word, JPG, or PNG). Make sure all your documents are in PDF format before combining.
How to Assemble Your Documents
Collect all required documents as PDFs
Gather every document listed in the submission requirements. If any documents are in Word format, convert them using Word to PDF. If you have paper documents, scan them to PDF using your phone or scanner.
Upload and arrange in the required order
Upload all PDFs to OmnisPDF's Merge tool. Drag and drop them into the order specified by the submission guidelines. If no order is specified, use: application/cover letter first, then ID, then supporting documents.
Merge, compress, and verify
Click Merge to combine. If the file exceeds the size limit, compress it. Open the merged PDF and scroll through every page to confirm all documents are present and in the right order.
Meeting File Size Limits
After merging, your combined PDF might be too large for the submission portal. Here's how to get it under the limit:
- ✓ Compress the merged file using Compress PDF. Medium compression works for most portals.
- ✓ For 2MB limits, use the dedicated Compress to 2MB tool which targets that specific size.
- ✓ Flatten before compressing. Use Flatten PDF to remove form fields and annotations, which reduces file size and makes compression more effective.
- ✓ If compression isn't enough, check if scanned pages are the culprit. One scanned page can be 2-5MB. Re-scan at a lower resolution or use Phone Scan Cleanup to optimize.
Pro tip: Many government and visa portals have a 2MB or 5MB limit. Always check the limit before scanning and assembling your documents. If the limit is very strict, scan at 150 DPI instead of 300 DPI to keep file sizes manageable.
Flattening Your PDF for Maximum Compatibility
Flattening is one of the most overlooked steps when preparing submissions. Here's why it matters:
- ✓ Locks form fields and signatures. If any of your documents have fillable fields or digital signatures, flattening ensures they display correctly on any device.
- ✓ Prevents editing. Once flattened, text in form fields can't be accidentally modified by the recipient.
- ✓ Reduces file size. Form fields, annotations, and layers add hidden data. Flattening removes these, making the file smaller.
- ✓ Improves compatibility. Some older PDF readers don't display form fields or annotations correctly. A flattened PDF looks the same everywhere.
Use Flatten PDF after merging and before compressing for best results.
Should You Password-Protect Your Submission?
If your merged PDF contains sensitive information (passport copies, bank statements, medical records), you might want to add a password:
- ✓ Use Protect PDF to add a password to your merged file.
- ✓ But check the submission requirements first. Many upload portals cannot open password-protected PDFs. If the portal doesn't mention password protection, don't add one.
- ✓ For email submissions, password protection is more appropriate. Send the PDF in one email and the password in a separate message.
Tips by Submission Type
University and School Submissions
Common order: application form, personal statement or essay, transcript, recommendation letters, ID or passport copy. Many universities have a 10MB limit. Use Medium compression after merging.
Visa and Immigration Applications
Follow the embassy checklist exactly. Typical order: completed application form, passport bio page, passport-size photo, financial documents (bank statements for 3-6 months), employment letter, hotel bookings, flight itinerary. Government portals often have very strict size limits (2-5MB).
Job Application Portals
Standard order: cover letter, resume/CV, portfolio or work samples, references, certifications. Most job portals accept up to 10-25MB. If the portal accepts multiple files, it's usually better to upload resume and cover letter separately.