当ASAN提示您的护照扫描件无法读取时，该怎么办？

Why ASAN Rejects Passport Scans

The ASAN Visa portal runs uploaded documents through an automated validation layer before a human reviewer ever sees them. That layer checks three things: resolution, file size, and whether the machine-readable text can be extracted. If your passport scan fails any one of those checks, you get the dreaded "unreadable scan" notice and your application stalls.

This is frustrating, but it is solvable. Most rejections come from one of four causes: low scan resolution, oversized or undersized files, glare or shadows obscuring the bio-data page, or corrupt metadata in the uploaded file. None of these require a new passport or a consulate visit. They require a better scan and the right export settings.

The Rescanning Checklist

Before you rescan, check the original document. A worn passport with a cracked laminate, faded ink, or water damage will always be harder to scan cleanly. If your passport is in poor condition, contact your issuing authority about a replacement before spending time on rescanning techniques.

Assuming your passport is in decent shape, follow this checklist for every rescan:

1. Use a flatbed scanner, not your phone camera. Phone cameras introduce barrel distortion, inconsistent lighting, and variable resolution. A flatbed produces consistent, predictable output every time.

2. Set the resolution to 300 DPI. This is the minimum the ASAN system expects. Anything below 200 DPI will fail the text-extraction check.

3. Scan at actual size, not fit-to-page. Fit-to-page scaling can throw off the DPI calculation and produce an image that looks fine on screen but fails automated checks.

4. Include all four corners of the passport page. The system needs the full page geometry to validate the document layout.

5. Avoid shadows and glare. Place the passport flat against the scanner glass. Use the scanner's lid to block ambient light. If your scanner has a built-in text mode, enable it—this reduces moiré patterns from the passport's laminate.

File Format and Size Settings

Resolution is only half the battle. ASAN also enforces strict file-size limits. A high-DPI scan that produces a 5 MB JPEG will be rejected before the content check even runs.

Recommended export settings:

• Format: JPEG (.jpg) or PDF (.pdf). Both are accepted, but JPEG is more forgiving on size limits.
• File size: Between 20 KB and 100 KB for JPEGs, under 1 MB for PDFs.
• Colour mode: Colour, not grayscale. The system expects full-colour documents.
• Compression: Medium or "high quality." Do not use maximum quality—overly large JPEGs get rejected.

When exporting from your scanner software or image editor, look for a quality slider. Set it so the output file lands within the 20–100 KB range. Test by exporting once at quality 70, check the file size, and adjust from there.

Renaming your file matters more than most people realise. The ASAN system can choke on files that have special characters, spaces, or non-ASCII characters in the filename. Use a simple name like passport_scan.jpg with only lowercase letters, numbers, and an underscore. Do not use accented characters, symbols, or uppercase letters.

Common Mistakes and How to Avoid Them

Mistake 1: Uploading the wrong page. ASAN requires the bio-data page—the page with your photo, name, date of birth, passport number, and expiry date. Uploading the back cover, the observations page, or a blank page will fail immediately. Double-check you are uploading the correct page before each submission.

Mistake 2: Scanning a photocopy. If you scanned a photocopy of your passport rather than the passport itself, the resolution loss from the first copy will make a clean second scan impossible. Always scan from the original document.

Mistake 3: Using an outdated browser. The ASAN portal uses JavaScript-based file validation. Older browsers may not execute this correctly, causing false rejections even when your file is perfectly formatted. Use the latest version of Chrome, Firefox, or Edge.

Mistake 4: Ignoring the expiry date field. Some applicants fix the scan and forget to check that the passport expiry date entered in the form matches the actual document. A mismatch between the scan and the form data triggers a manual review that can add days to your processing time.

Mistake 5: Submitting multiple times in rapid succession. If your first upload fails, wait at least 30 minutes before attempting a second upload. Rapid resubmissions can flag your application for manual review unnecessarily.

FAQ

Can I use a phone photo instead of a scanner?

Phone photos are not recommended. Even with good lighting, phone cameras produce inconsistent resolution and introduce distortion that the ASAN automated checker flags as unreadable. If you must use a phone, hold it perfectly parallel to the passport page, use a ruler to ensure the phone is the correct distance away, and enable the highest resolution setting. Then resize and crop carefully before uploading.

The scan looks fine on my screen. Why did it fail?

The ASAN system analyses the raw pixel data and machine-readable text zones, not how the image looks to a human eye. A scan that appears sharp may have compression artefacts, inconsistent DPI, or hidden metadata issues that are invisible on screen. Following the 300 DPI, JPEG, 20–100 KB checklist is the most reliable way to pass.

My passport has a chip and a laminated overlay. Is that a problem?

Laminated passports with holographic overlays can create glare and moiré patterns in scans. Use a flatbed scanner with the lid closed to block ambient light. If you see visible glare lines in the scan, re-scan with the passport placed on a dark surface and the scanner lid fully closed.

I tried rescanning twice and it still failed. What now?

After two failed attempts, switch browsers and clear your cache and cookies before trying again. If it fails a third time, the issue may be with the file format or size rather than the scan quality itself. Double-check that the file is between 20 KB and 100 KB and that the filename contains no special characters.

Does the order of pages matter?

For a standard e-visa application, only the bio-data page is required. Do not upload additional pages unless explicitly asked. Extra pages increase file size and do not improve your chances of approval.

Can I apply through a third-party service instead?

Yes. If you continue to experience technical issues with the ASAN portal, you can use a visa processing service like azerbaijan-visa.com to handle the upload and submission on your behalf. Services like these are familiar with the portal's requirements and can often resolve formatting issues quickly.

Key takeaways

1. Scan at 300 DPI on a flatbed scanner for every passport upload to ASAN.
2. Export as a JPEG between 20 KB and 100 KB, or as a PDF under 1 MB.
3. Rename your file with only letters, numbers, and underscores—no spaces or symbols.
4. Include all four corners of the bio-data page and avoid glare from the passport laminate.
5. If rescanning fails, switch browsers and clear cache before attempting again.