Users managing international contacts often worry about character corruption during conversion. Incorrect encoding can make names and addresses unreadable. GainTools OST to VCF Converter supports Unicode encoding, which preserves non-English characters and multilingual contact details during export. The software keeps formatting intact so contacts remain readable across devices and platforms. I converted contacts containing different language characters, and the output remained accurate without errors. The free demo version allows you to preview converted contacts and confirm data accuracy before saving them permanently.