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ata-validator
Fast, correct JSON Schema validation for JavaScript
ata is a JSON Schema validator for JavaScript. It passes the whole official test suite and ranks first in all six validation and parsing tables on schemabenchmarks.dev. Errors say what is wrong and where, down to line and column. It runs where code generation is blocked, such as Cloudflare Workers, and its pattern engine is linear-time, so one crafted string cannot stall a server. With the bundler plugin, new Validator(schema) compiles away to a few KB.
Hi Product Hunt, I'm Mert, and I've been building ata for the past year.
It started with a simple frustration: validating request bodies was either fast or correct, and it usually broke the moment code generation was not allowed, like on Cloudflare Workers or under a strict CSP. I wanted one validator that did not make me choose.
So ata compiles schemas for speed, and falls back to an interpreter that gives exactly the same answers when compiling is not allowed. It passes 100% of the official JSON Schema test suite in both modes.
A few things I'm proud of:
- Error messages that point to the exact line and column, with a hint on how to fix it
- A linear-time pattern engine, so a crafted string cannot freeze your server
- A bundler plugin that compiles new Validator(schema) away: a small app ships 2.6 KB instead of about 100 KB, with no code changes
Every number on the page is measured, and the benchmarks are public. I would love your feedback, especially if you try it on your own schemas.
About ata-validator on Product Hunt
“Fast, correct JSON Schema validation for JavaScript”
ata-validator was submitted on Product Hunt and earned 7 upvotes and 2 comments, placing #77 on the daily leaderboard. ata is a JSON Schema validator for JavaScript. It passes the whole official test suite and ranks first in all six validation and parsing tables on schemabenchmarks.dev. Errors say what is wrong and where, down to line and column. It runs where code generation is blocked, such as Cloudflare Workers, and its pattern engine is linear-time, so one crafted string cannot stall a server. With the bundler plugin, new Validator(schema) compiles away to a few KB.
On the analytics side, ata-validator competes within Open Source, Developer Tools and GitHub — topics that collectively have 631.9k followers on Product Hunt. The dashboard above tracks how ata-validator performed against the three products that launched closest to it on the same day.
Who hunted ata-validator?
ata-validator was hunted by Mert Can Altın. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of ata-validator including community comment highlights and product details, visit the product overview.
Mert Can Altın