jscan by romshark
High performance JSON iterator & validator for Go
About jscan
From the project's README at github.com/romshark/jscan. Lightly cleaned for readability; for the full source see the upstream repo.
jscan provides high-performance zero-allocation JSON iterator and validator for Go. This module doesn't provide / capabilities yet, instead it focuses on highly efficient iteration over JSON data with on-the-fly validation.
An experimental decoder with backward compatibility to encoding/json is WiP and is expected to be introduced together with jscan v3.
jscan is tested against https://github.com/nst/JSONTestSuite, a comprehensive test suite for RFC 8259 compliant JSON parsers.
See jscan-benchmark for benchmark results . Example https://go.dev/play/p/moP3l9EkebF
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 101 | github.com/romshark/jscan |
| GitHub forks | 7 | github.com/romshark/jscan |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 4.3 years | since Jan 2022 |
| Last commit | 2.3 years ago | Feb 2, 2024 |
| Releases shipped | 6 | last: 2.4 years ago |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
What people say on Hacker News
Ready to self-host jscan?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
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