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---
title: Podporované formáty souborů
description: Formáty souborů podporované pro import dat v Twenty.
---
## Podporované formáty
Twenty podporuje pro import tři formáty souborů:
| Formát | Přípona | Poznámky |
| ------------------ | ------- | ------------------------------ |
| **CSV** | .csv | Doporučeno, nejkompatibilnější |
| **Excel** | .xlsx | Moderní formát Excelu |
| **Excel (starší)** | .xls | Starší formát Excelu |
## Požadavky na soubory
| Požadavek | Hodnota |
| ----------------- | ------------------------------------------ |
| **Kódování** | Doporučeno UTF-8 |
| **Limit záznamů** | 10,000 záznamů na soubor |
| **Struktura** | První řádek musí obsahovat záhlaví sloupců |
| **Obsah** | V každém souboru pouze jeden typ objektu |
## Osvědčené postupy pro CSV
* **Oddělovač**: Použijte čárku (`,`) nebo středník (`;`)
* **Textový kvalifikátor**: Použijte dvojité uvozovky (`"`) pro text obsahující čárky
* **Konce řádků**: Windows (CRLF) nebo Unix (LF), obojí je podporováno
* **Prázdné hodnoty**: Nechte buňky prázdné, nepoužívejte "NULL" ani "N/A"
## Osvědčené postupy pro Excel
Při exportu z Excelu:
* Odstraňte vzorce (exportujte pouze hodnoty)
* Odstraňte prázdné řádky na konci
* Zajistěte, aby nebyly sloučené buňky
* Použijte pouze první list
## Velké datové sady
Pro datové sady větší než 10,000 záznamů:
* Rozdělte na více souborů
* Nebo použijte [import přes API](/l/cs/user-guide/data-migration/how-tos/import-data-via-api) pro neomezený počet záznamů
<Note>Pro velmi rozsáhlé migrace (100,000+ záznamů) je API výrazně rychlejší a spolehlivější než importy CSV.</Note>