Want to import data from JSON Lines (JSONL / NDJSON / LDJSON) file to Visual FoxPro?
Try Withdata FileToDB, a desktop JSONL to Visual FoxPro converter for Windows, MacOS, and Linux, Import JSON Lines to Visual FoxPro, 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.
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 Visual FoxPro
Login to Visual FoxPro -> Choose JSON Lines file -> Set Visual FoxPro table -> Import JSON Lines to Visual FoxPro
Choose Visual FoxPro 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 Visual FoxPro table and config fields.
3. Preview data will be in Visual FoxPro table.
4. Import JSON Lines data to Visual FoxPro.
View imported data in Visual FoxPro table
Convert JSON Lines (JSONL / NDJSON / LDJSON) to Visual FoxPro in command line
Save “JSON Lines to Visual FoxPro” session, then you can:
- Import JSON Lines (JSONL / NDJSON / LDJSON) to Visual FoxPro in Windows command line.
- Import JSON Lines (JSONL / NDJSON / LDJSON) to Visual FoxPro in Linux command line.
- Import JSON Lines (JSONL / NDJSON / LDJSON) to Visual FoxPro in macOS command line.
Set scheduled tasks for converting JSON Lines (JSONL / NDJSON / LDJSON) to Visual FoxPro
You can schedule and automate this “JSON Lines to Visual FoxPro” conversion task by:
- Save session and create .bat (Windows) or .sh (Linux/macOS) file for “JSON Lines to Visual FoxPro” conversion.
- Set scheduled task for “JSON Lines to Visual FoxPro” conversion.
FAQ
More tools for JSONL / NDJSON / LDJSON.
Download Withdata FileToDB
JSON Lines → Visual FoxPro reference
Type mapping
| Value kind | in JSON Lines | in Visual FoxPro |
|---|---|---|
| Int | 1234 (number) | Numeric(10,0) |
| Bigint | 9007199254740993 | Numeric(19,0) |
| Decimal | 1234.56 (number) | Numeric(p,s) |
| Float | 1.234e10 (number) | Float |
| Text | "text" (string) | Character(n) |
| Long text | "multi-line\ntext" | Memo |
| Date | "2026-09-18" (string) | Date |
| Datetime | "2026-09-18T14:30:00Z" (string) | DateTime |
| Binary | "base64:..." (string) | General |
| Boolean | true / false (boolean) | Logical |
| JSON | nested object on the same line | (none) |
Dialect differences
JSON Lines is a file format and Visual FoxPro 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 Visual FoxPro |
|---|---|---|
| port | — | (file-based) |
| identifiers | Double quotes; backslash escapes (a newline inside a string... | — |
| row limit | — | (driver dependent) |
| dates | No date type: dates arrive as strings | Date (D), DateTime (T) |
| long text | — | Memo (M) |
| binary | Not supported natively - base64 inside a string | General (G) |
| 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 ... | — |
No counterpart
- JSON Lines values of kind JSON have nowhere to go in Visual FoxPro.
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