NDJSON Field Filter
Keep or drop JSON Lines records using dot-path field filters, comparisons, and regex matches in the browser.
Filter JSON Lines by field values
NDJSON (newline-delimited JSON) stores one JSON object per line, common for logs, streaming ETL, and
database exports. This filter keeps or removes lines based on a dot-path field such as user.id or
metrics.latency_ms, using equals, contains, numeric comparisons, regex, or existence checks.
Typical workflows
- Drop failed API responses where
statusequalserror. - Keep only rows with
scoregreater than a threshold. - Remove lines missing a required nested key before loading into a warehouse.
Pair with JSONL Validator, JSONL Dedupe, and NDJSON to CSV.
Frequently Asked Questions
How do nested paths work?
Use dot notation (order.customer.email). Array indexes are numeric segments (items.0.sku).
What happens to invalid JSON lines?
Malformed lines are reported and excluded from the kept output.
Is data uploaded?
No. Filtering happens client-side in your browser.
Related Tools
JWK Rotation Diff
Days Calculator
JSON Cleaner
JSON Navigator
Clomid Ovulation Calculator
Proportion Solver
IRA Calculator
VA Loan Calculator
Prefix Suffix Lines
Base64 Encoder/Decoder
Chocolate Calculator
Trigonometric Functions Calculator
Camera Recorder
Analyze Clock Time
Decimal to IP Converter
Involute Function Calculator
Grain Bin Calculator
Commission Calculator
XIRR Calculator
Radioactive Activity Calculator