Withdata Software

Import JSON Lines (JSONL / NDJSON / LDJSON) to SQLite

Want to import data from JSON Lines (JSONL / NDJSON / LDJSON) file to SQLite ?

Try Withdata FileToDB, a desktop JSONL to SQLite converter for Windows, MacOS, and Linux, Import JSON Lines to SQLite, Easy and Fast.

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 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 SQLite

Login to SQLite -> Choose JSON Lines file -> Set SQLite table -> Import JSON Lines to SQLite

Choose SQLite 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 SQLite table and config fields.

3. Preview data will be in SQLite table.

4. Import JSON Lines data to SQLite.

View imported data in SQLite table

Convert JSON Lines (JSONL / NDJSON / LDJSON) to SQLite in command line

Save “JSON Lines to SQLite” session, then you can:

Set scheduled tasks for converting JSON Lines (JSONL / NDJSON / LDJSON) to SQLite

You can schedule and automate this “JSON Lines to SQLite” conversion task by:

  1. Save session and create .bat (Windows) or .sh (Linux/macOS) file for “JSON Lines to SQLite” conversion.
  2. Set scheduled task for “JSON Lines to SQLite” conversion.

FAQ

What is Withdata FileToDB?
Withdata FileToDB is an ETL software can import JSON data to databases. Download Withdata FileToDB
How long does it take to import JSON Lines (JSONL / NDJSON / LDJSON) to SQLite?
FileToDB works fast. It convert millions of rows within a minute.
Is it safe to import JSON Lines (JSONL / NDJSON / LDJSON) to SQLite using FileToDB?
Of course! FileToDB import JSON Lines (JSONL / NDJSON / LDJSON) to SQLite locally, absolutely safe.
Can I import JSON Lines (JSONL / NDJSON / LDJSON) to SQLite on Linux, Mac OS?
Yes, you can. FileToDB has Linux, Mac OS, and Windows version.
Can I import JSON Lines (JSONL / NDJSON / LDJSON) to SQLite in command line?
Yes, you can. FileToDB can running in command line, on Linux, Mac OS, and Windows.


More tools for JSONL / NDJSON / LDJSON.

JSON Lines → SQLite reference

Type mapping

Value kindin JSON Linesin SQLite
Int1234 (number)INTEGER
Bigint9007199254740993INTEGER
Decimal1234.56 (number)NUMERIC
Float1.234e10 (number)REAL
Text"text" (string)TEXT
Long text"multi-line\ntext"TEXT
Date"2026-09-18" (string)TEXT
Datetime"2026-09-18T14:30:00Z" (string)TEXT
Binary"base64:..." (string)BLOB
Booleantrue / false (boolean)INTEGER
JSONnested object on the same lineTEXT

Dialect differences

JSON Lines is a file format and SQLite 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.

Propertyin JSON Linesin SQLite
port—(file-based)
identifiersDouble quotes; backslash escapes (a newline inside a string..."double quotes" or [brackets]
row limit—LIMIT n
datesNo date type: dates arrive as stringsTEXT (no date type)
long text—TEXT
binaryNot supported natively - base64 inside a stringBLOB
separatorNewline between records—
encodingUTF-8 by definition—
typingSame as JSON, but records cannot nest across lines—
shapeFlat streamTables of rows and columns
ceilingStreams, so it scales past what a single JSON document can ...—

Command line

SideCommand
SQLitesqlite3 .dump
SQLite (load).import (sqlite3)

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