| Metric | io-ts | runtypes | Difference |
|---|---|---|---|
| Weekly downloads | 2,049,283 | 186,342 | io-ts 11.0x higher |
| 12-month download growth | +22% | -1% | io-ts +23 pts |
| Gzip size | - | - | - |
| Minified size | - | - | - |
| Dependencies | 0 | 0 | Same |
| Unpacked size | 449 kB | 362 kB | runtypes 24% smaller |
| Latest release | 2.2.22, 10 Dec 2024 | 7.0.5, 14 Aug 2026 | runtypes 20 months more recent |
| Releases, last 12 months | 0 | - | - |
| First published | 1 Feb 2017 | - | - |
| GitHub stars | 6,815 | 2,701 | io-ts 2.5x higher |
| Open issues | 140 | 24 | io-ts 116 more |
| Open pull requests | 21 | 1 | io-ts 20 more |
| Contributors | - | - | - |
| Commits, last 52 weeks | 0 | 3 | runtypes higher |
| TypeScript types | Bundled | Bundled | Same |
| Module format | ESM + CommonJS | ESM + CommonJS | Same |
| Runtimes | - | - | - |
| License | MIT | MIT | Same |
Green marks the smaller size or the more recent release. Bold marks the higher count, with no judgement implied. Sizes are for the whole package per Bundlephobia. Growth compares the average of the last 4 weeks with the first 4 weeks of the 52-week series.
io-ts2m latest weekruntypes186.3k latest week
Week of 23 Sept 2025Week of 15 Sept 2026
io-ts
Major versions
- 0.0.11 Feb 2017
- 1.0.012 Feb 2018
- 2.0.02 Jul 2019
Last 5 releases
- 2.2.2210 Dec 2024
- 2.2.213 Dec 2023
- 2.2.203 Dec 2022
- 2.2.196 Oct 2022
- 2.2.1829 Aug 2022
114 releases in total, 0 in the last 12 months
runtypes
Major versions
- -
Last 5 releases
- -
Release count not fetched
io-ts
-
runtypes
-
io-ts
-
runtypes
-
- Need no runtime dependenciesBoth
- Module formatBoth ESM + CommonJS
- Need TypeScript types in the package itselfBoth
- Need the more recent releaseruntypes (7.0.5 on 14 Aug 2026 vs 2.2.22 on 10 Dec 2024)
- Higher weekly npm downloadsio-ts (2m vs 186.3k)
Each line is generated from the data above.
- @standard-schema/spec vs io-tsNo search data
- json-schema-to-ts vs io-tsNo search data
- @standard-schema/spec vs runtypesNo search data
- json-schema-to-ts vs runtypesNo search data
runtypes: runtypes npm registry, runtypes npm downloads, runtypes GitHub. Data fetched 25 Sept 2026.
Indexability: Indexed.