Want to import data from JSON Lines (JSONL / NDJSON / LDJSON) file to MariaDB?
Try Withdata FileToDB, a desktop JSONL to MariaDB converter for Windows, MacOS, and Linux, Import JSON Lines to MariaDB, Easy and Fast.
- Can run in GUI mode, Step by Step, just a few mouse clicks.
- Can run in Command line, for Scheduled Tasks and Streams.
- Convert locally and privately, avoid uploading large or private JSONL file(s) to online services.
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Windows 64 bit
Windows 32 bit
Linux .deb (For Debian, Ubuntu) 64 bit
Linux .rpm (For Red Hat, Fedora, SUSE) 64 bit
MacOS 64 bit
JSON Lines text format (JSONL), also called Newline-delimited JSON (NDJSON), or Line-delimited JSON (LDJSON). JSON Lines files may be saved with the file extension .jsonl, *.ndjson, *.ldjson.
Import data from JSON Lines (JSONL / NDJSON / LDJSON) file to MariaDB
Login to MariaDB -> Choose JSON Lines file -> Set MariaDB table -> Import JSON Lines to MariaDB
Choose MariaDB and logon.
Click “Wizard – 1 File To 1 Table” at task dialog.
Select the “JSON” file type.
then show the wizard.
1. Open a JSON Lines (JSONL / NDJSON / LDJSON) file.
Support large ( > 4GB ) JSON Lines file.
Here is the file’s content.
FileToDB will parse JSON Lines file.
2. Select a MariaDB table and config fields.
3. Preview data will be in MariaDB table.
4. Import JSON Lines data to MariaDB.
View imported data in MariaDB table
Convert JSON Lines (JSONL / NDJSON / LDJSON) to MariaDB in command line
Save “JSON Lines to MariaDB” session, then you can:
- Import JSON Lines (JSONL / NDJSON / LDJSON) to MariaDB in Windows command line.
- Import JSON Lines (JSONL / NDJSON / LDJSON) to MariaDB in Linux command line.
- Import JSON Lines (JSONL / NDJSON / LDJSON) to MariaDB in macOS command line.
Set scheduled tasks for converting JSON Lines (JSONL / NDJSON / LDJSON) to MariaDB
You can schedule and automate this “JSON Lines to MariaDB” conversion task by:
- Save session and create .bat (Windows) or .sh (Linux/macOS) file for “JSON Lines to MariaDB” conversion.
- Set scheduled task for “JSON Lines to MariaDB” conversion.
FAQ
More tools for JSONL / NDJSON / LDJSON.
Download Withdata FileToDB
Windows 64 bit
Windows 32 bit
Linux .deb (For Debian, Ubuntu) 64 bit
Linux .rpm (For Red Hat, Fedora, SUSE) 64 bit
MacOS 64 bit
JSON Lines → MariaDB reference
Type mapping
| Value kind | in JSON Lines | in MariaDB |
|---|---|---|
| Int | 1234 (number) | INT |
| Bigint | 9007199254740993 | BIGINT |
| Decimal | 1234.56 (number) | DECIMAL(p,s) |
| Float | 1.234e10 (number) | DOUBLE |
| Text | "text" (string) | VARCHAR(n) |
| Long text | "multi-line\ntext" | LONGTEXT |
| Date | "2026-09-18" (string) | DATE |
| Datetime | "2026-09-18T14:30:00Z" (string) | DATETIME |
| Binary | "base64:..." (string) | LONGBLOB |
| Boolean | true / false (boolean) | TINYINT(1) |
| JSON | nested object on the same line | JSON |
Dialect differences
JSON Lines is a file format and MariaDB is a database server, so the target has to be told the types the file never carried - the rows below are where the two sides diverge.
| Property | in JSON Lines | in MariaDB |
|---|---|---|
| port | — | 3306 |
| identifiers | Double quotes; backslash escapes (a newline inside a string... | `backtick` |
| row limit | — | LIMIT n |
| dates | No date type: dates arrive as strings | DATETIME, TIMESTAMP, DATE, TIME |
| long text | — | TINYTEXT / TEXT / MEDIUMTEXT / LONGTEXT |
| binary | Not supported natively - base64 inside a string | BLOB / TINYBLOB / LONGBLOB |
| separator | Newline between records | — |
| encoding | UTF-8 by definition | — |
| typing | Same as JSON, but records cannot nest across lines | — |
| shape | Flat stream | Tables of rows and columns |
| ceiling | Streams, so it scales past what a single JSON document can ... | — |
Command line
| Side | Command |
|---|---|
| MariaDB | mariadb-dump |
| MariaDB (load) | mariadb-import, or LOAD DATA INFILE |
Convert your data online, free
Free in-browser converters for CSV, Excel, JSON, XML and SQL: Withdata Online Data Conversion. Large files, batch conversion or scheduling? See the offline desktop apps, or browse all data conversion tools.