Benchmarks of popular CSV parsers and formatters:
| Package | Version | Published | Parse | Format |
|---|---|---|---|---|
| csv-parse | 5.5.6 | 4 months ago | Yes | |
| csv-parser | 3.0.0 | 4 years ago | Yes | |
| csv-rex | 0.7.0 | 1 year ago | Yes | Yes |
| csv-streamify | 4.0.0 | 6 years ago | Yes | |
| csv-stringify | 6.5.1 | 1 month ago | Yes | |
| csvtojson | 2.0.10 | 5 years ago | Yes | |
| fast-csv | 5.0.1 | 7 months ago | Yes | Yes |
| papaparse | 5.4.1 | 1 year ago | Yes |
Your preferred CSV package missing? PRs welcome. Excluded packages in /docs/EXCLUDED.md.
The tests run on generated data files with 10 - 100 columns and 10K - 1M rows, both quoted and unquoted. The stream implementation for each library were used to keep comparison consistent, but can be slower compared to self chunking in certain use cases.
| columns x rows | cycles |
|---|---|
| 10 x 10,000 | 20 |
| 100 x 10,000 | 10 |
| 10 x 100,000 | 10 |
| 100 x 100,000 | 5 |
| 10 x 1,000,000 | 5 |
Benchmarked on GitHub Actions. Only the fastest 5 will be visualized.
| Package | 10x10K | 100x10K | 10x100K | 100x100K | 10x1000K |
|---|---|---|---|---|---|
| csv-rex | 23ms | 175ms | 214ms | 1,732ms | 2,114ms |
| papaparse | 42ms | 199ms | 395ms | 2,094ms | 4,037ms |
| csv-parser | 38ms | 349ms | 379ms | 3,697ms | 4,064ms |
| csvtojson | 56ms | 441ms | 548ms | 4,421ms | 5,526ms |
| csv-parse | 77ms | 663ms | 751ms | 6,912ms | 7,870ms |
| csv-streamify | 74ms | 724ms | 836ms | 8,087ms | 9,306ms |
| fast-csv | 112ms | 963ms | 1,104ms | 9,947ms | 11,498ms |
| Package | 10x10K | 100x10K | 10x100K | 100x100K | 10x1000K |
|---|---|---|---|---|---|
| csv-rex | 9ms | 46ms | 82ms | 454ms | 824ms |
| csvtojson | 33ms | 248ms | 331ms | 2,528ms | 3,377ms |
| csv-parser | 32ms | 301ms | 338ms | 3,225ms | 3,592ms |
| papaparse | 131ms | 59ms | 1,169ms | 554ms | 10,560ms |
| csv-parse | 62ms | 546ms | 623ms | 5,551ms | 6,631ms |
| csv-streamify | 66ms | 663ms | 769ms | 7,503ms | 8,665ms |
| fast-csv | 90ms | 803ms | 935ms | 8,317ms | 9,584ms |
| Package | 10x10K | 100x10K | 10x100K | 100x100K | 10x1000K |
|---|---|---|---|---|---|
| csv-rex | 23ms | 111ms | 230ms | 1,123ms | 2,360ms |
| csv-stringify | 26ms | 115ms | 258ms | 1,166ms | 2,723ms |
| fast-csv | 32ms | 139ms | 312ms | 1,402ms | 2,908ms |
- leanylabs who inspired the making of this repo with their article CSV Parsers Comparison.
- quickchart.io for the automation of the chart creation.
- GitHub for providing free use of Actions for running the benchmarks.