Want to import data from JSON Lines (JSONL / NDJSON / LDJSON) file to Access ?
Try Withdata FileToDB, a desktop JSONL to Access converter for Windows, MacOS, and Linux, Import JSON Lines to Access, 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.
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 Access
Login to Access -> Choose JSON Lines file -> Set Access table -> Import JSON Lines to Access
Choose Access 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 Access table and config fields.
3. Preview data will be in Access table.
4. Import JSON Lines data to Access.
View imported data in Access table
Convert JSON Lines (JSONL / NDJSON / LDJSON) to Access in command line
Save “JSON Lines to Access” session, then you can:
- Import JSON Lines (JSONL / NDJSON / LDJSON) to Access in Windows command line.
- Import JSON Lines (JSONL / NDJSON / LDJSON) to Access in Linux command line.
- Import JSON Lines (JSONL / NDJSON / LDJSON) to Access in macOS command line.
Set scheduled tasks for converting JSON Lines (JSONL / NDJSON / LDJSON) to Access
You can schedule and automate this “JSON Lines to Access” conversion task by:
- Save session and create .bat (Windows) or .sh (Linux/macOS) file for “JSON Lines to Access” conversion.
- Set scheduled task for “JSON Lines to Access” 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 → Access reference
Type mapping
| Value kind | in JSON Lines | in Access |
|---|---|---|
| Int | 1234 (number) | Long Integer |
| Bigint | 9007199254740993 | Long Integer |
| Decimal | 1234.56 (number) | Decimal |
| Float | 1.234e10 (number) | Double |
| Text | "text" (string) | Text(n) |
| Long text | "multi-line\ntext" | Long Text |
| Date | "2026-09-18" (string) | Date/Time |
| Datetime | "2026-09-18T14:30:00Z" (string) | Date/Time |
| Binary | "base64:..." (string) | OLE Object |
| Boolean | true / false (boolean) | Yes/No |
| JSON | nested object on the same line | Long Text |
Dialect differences
JSON Lines is a file format and Access 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 Access |
|---|---|---|
| port | — | (file-based) |
| identifiers | Double quotes; backslash escapes (a newline inside a string... | [square brackets] |
| row limit | — | SELECT TOP n |
| dates | No date type: dates arrive as strings | Date/Time |
| long text | — | MEMO |
| binary | Not supported natively - base64 inside a string | OLE Object |
| 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 ... | — |
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.