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Visa portals reject documents for boring, avoidable reasons: the file is 40 KB over the limit, three bank statements arrived as three uploads instead of one, a passport scan is too dark to read. None of these are about your eligibility — they’re about file preparation, and each one costs you a resubmission and days of waiting. This is the workflow that gets documents accepted on the first try.
Start by reading the portal’s actual limits
Before touching a single file, find two numbers on the upload screen: the maximum file size per document, and whether the portal accepts one file or several per requirement. These vary by consulate and by prestataire (VFS, TLScontact, France-Visas each differ), and they change. The limit printed on the upload screen is the only one that’s true — ignore forum advice quoting old numbers.
Step 1 — Scan so you don’t fight the file later
Most rejections start at the scan. Use a scanning app, not a raw camera photo: it deskews the page, flattens the lighting, and crops to the document edge. Scan in colour only if the document needs it (a passport photo page, a stamped visa). A bank statement or attestation is black text on white — scan it in grayscale and you have halved the file size before any compression.
Step 2 — Merge what belongs together, in the right order
When the portal asks for “the last three months of statements” in one slot, it wants one PDF, oldest page first. Merge the three files in chronological order before compressing. A reviewer reading front-to-back should move forward in time — getting this wrong reads as disorganised even when every page is present.
Step 3 — Compress to the real target, then verify
Now hit the size limit deliberately. If the portal caps documents at 1 MB, compress with a 1 MB target rather than guessing at a “medium” quality setting. Then do the step almost everyone skips: open the compressed file and read it. Can you make out every digit on the statement, every stamp, the passport number? If a number is now ambiguous, the compression went too far — rescan that page at higher quality and compress it alone, rather than dropping quality on the whole bundle.
Step 4 — Redact only what the consulate doesn’t need
If you’re submitting a bank statement that shows an account number the consulate hasn’t asked for, redact it properly — a tool that blacks out the text irreversibly, not a black rectangle drawn on top that can be moved aside. Never redact anything the portal requires; when in doubt, submit it intact.
The pre-submission checklist
- Every file is under the portal’s stated size limit (check the number on screen, not your memory of it).
- Multi-part requirements are merged into one PDF, oldest page first.
- You have opened and read every compressed file — stamps, numbers and signatures are legible.
- Filenames are boring and descriptive (bank-statement-jan-mar.pdf), not scan0007.pdf.
- Colour only where colour matters; everything else grayscale.
Why this matters more than it should
A visa reviewer spends seconds per document. A file that opens instantly, reads clearly, and is in the expected order builds quiet confidence in the whole application. A file that’s too big to upload, or too dark to read, creates friction before anyone has assessed your case. You can’t control the decision — but you can remove every reason to bounce your file back unread.
Frequently asked questions
The portal keeps saying my file is too large even after compressing. Why?
Two common causes: you compressed to a target above the portal's real limit (re-check the number on the upload screen and target below it), or the document is many colour-scanned pages. Convert those to grayscale first, or split into the number of files the portal allows.
Is it safe to compress and merge sensitive documents like passports and bank statements?
Files are sent over an encrypted connection and deleted automatically within one hour; they are not inspected or stored. For the strongest privacy, the merge tool can run entirely in your browser so the file never uploads at all — verifiable in your browser's Network tab.
Will compressing a scanned document make it fail an authenticity check?
No — compression reduces file size, it doesn't alter the document's content or add anything. The only risk is over-compressing until text becomes illegible, which is why the workflow above insists on reading every file before you submit it.
Should each document be a separate PDF, or everything in one big file?
Follow the portal's slots exactly: one PDF per requirement. Merge only the pages that belong to the same requirement (e.g. three months of statements). Don't combine unrelated documents into a single file unless the portal explicitly asks for it.