Convert transactions to an importable by Quicken format
See below which format your Quicken imports and choose a converter to convert your files to this format. In case your Quicken imports QIF and QFX files, either format has issues and advantages. The same applies to QFX and CSV Mint files.
Quicken for Windows imports QFX, QIF files. Quicken for PC older than three years imports only QIF files
Quicken for Mac 2015+ imports QFX files and CSV Mint files
Quicken Essentials for Mac import QFX and OFX files
Quicken for Mac 2007 imports QIF files (some users claims QFX files are importable as well, you can try QFX format with the trial and check if it works for your copy of Quicken
QIF format highlights:
supports categories and tags
you have to follow specific instructions to import a QIF file
works even if your Quicken version is older than three years
does not need Internet to import
QFX format highlights:
simpler import compared to QIF files
does not support categories and tags
needs Internet connection to import (Quicken does online check for the bank label on the QFX file)
CSV Mint format highlights:
Quicken 2015+ for Mac only
imports into a new account, needs to select imported transactions and drag them to another account
Convert to the QFX (Web Connect) format
QFX files are Web Connect files and do not carry categories like QIF files. Quicken categorizes transactions after import using the renaming rules or categories can be assigned by the user later.
Convert CSV/Excel/TXT files to the QFX (Web Connect) format: CSV2QFX
Convert PDF files (text based) to the QFX (Web Connect) format: PDF2QFX
Convert PDF files (text based) to CSV/Excel: PDF2CSV and use with CSV2QFX
Convert QIF/QBO/OFX files to the QFX format or fix a non-importable QFX file: Bank2QFX
Convert to the QIF format
QIF format is great format supporting categories and tags. Quicken discourages QIF format, but still imports it fine. Quicken 2015 and 2016 have issue with QIF import and QIF files should be imported through proxy cash accounts. Quicken 2017 fixes the issue and imports the same way as Quicken 2014 and earlier versions. Quicken has to be at least Deluxe version to import QIF files directly into bank or credit card accounts. Quicken for Mac 2015 or later do not import QIF files, but Quicken for Mac 2007 does import QIF files fine. QIF Format has many variants, make sure to select correct QIF variant for your Quicken version or other personal finance or accounting software.
Convert CSV/Excel/TXT files to the QIF format: CSV2QIF
Convert QIF files to the importable QIF variant: FixMyQIF<
Convert QFX/QBO/OFX files to the QIF format or make your QIF file importable: Bank2QIF
Convert to the CSV Mint format (for Mac only)
Quicken for Mac 2015+ has option to import a CSV Mint file (files exported from Mint web site. These CSV Mint files are imported into a new Quicken account, but transactions can be easily moved under other account, so CSV Mint is great option to import transactions on Mac as QIF format is not available. CSV Mint have category unlike QFX files.
Convert CSV/Excel files to the CSV Mint format: CSV2CSV