Astonishing performance for your biggest data files.
Two products — OPENXMLJSON and NARIKJSON — each available as a free monthly tier or a paid yearly license. Same complete app, no file-size limit on any tier.
Enterprise-grade data engineering.
Our top-tier edition, a step above Premium — a dual-engine, Rust-powered workbench built for the largest datasets and the most demanding teams.
Dual-Engine Architecture
Two engines in one — in-memory speed or database scale, auto-selected.
Built for Gigabytes
Opens multi-GB files with hundreds of millions of rows, effortlessly.
Rust-Powered Core
Native Rust engine for streaming ingest and native-speed queries.
Every Format, One App
JSON, NDJSON, XML, YAML, CSV, TSV & delimited — all instantly explorable.
One-Click Conversion
Convert freely across JSON, CSV, XML & YAML in a single click.
Spreadsheet-Grade Tables
Pin, filter, sort & profile millions of rows like a spreadsheet.
Lightning Search
Trigram-indexed search finds any key or value in milliseconds.
Built-In jq Filtering
Run full jq transforms in-app — results open in a new tab.
Integrated API Workbench
Postman-style requests; explore live responses as structured data.
Schema, Diff & Insight
Generate schemas, validate, diff files & drill into structure.
Stream huge inputs
Rust-powered streaming ingest reads enormous files efficiently while queries run at native speed.
Explore APIs in-app
Use the integrated, Postman-style API workbench to send requests and explore live responses as structured data.
Choose your plan.
Two products, each offered as a free monthly tier or a paid yearly license. It's the same complete app either way — the only difference is billing.
Our top-tier engine, a step above Premium — built for the largest datasets.
- Dual-engine architecture (in-memory + database)
- Multi-GB files, 100M+ rows
- Rust-powered native core
- Every format (incl. YAML)
- Spreadsheet-grade tables
- Lightning trigram search
- Built-in jq filtering
- Integrated API workbench
- Schema, diff & insight
Our top-tier engine, a step above Premium — built for the largest datasets.
- Dual-engine architecture (in-memory + database)
- Multi-GB files, 100M+ rows
- Rust-powered native core
- Every format (incl. YAML)
- Spreadsheet-grade tables
- Lightning trigram search
- Built-in jq filtering
- Integrated API workbench
- Schema, diff & insight
The complete OPENXMLJSON app — no file-size limit.
- No file-size limit — open 10+ GB files
- JSON, XML, CSV & TSV — any size
- Virtualized tree, find & filter
- JSONPath / XPath queries
- Follow tail on live logs
- Open from URL with auth
- Export to JSON / XML / CSV
- Automatic update checks
- Priority email support
The complete OPENXMLJSON app — no file-size limit.
- No file-size limit — open 10+ GB files
- JSON, XML, CSV & TSV — any size
- Virtualized tree, find & filter
- JSONPath / XPath queries
- Follow tail on live logs
- Open from URL with auth
- Export to JSON / XML / CSV
- Automatic update checks
- Priority email support
Frequently asked questions
What's the difference between Essential and Premium?
Nothing in features — both are the complete OPENXMLJSON app with no file-size limit. Essential is free with monthly billing; Premium is a paid yearly license at $49.99.
Who is the Premium edition for?
Anyone who prefers a yearly license over monthly billing. Premium is identical to Essential in features — the same complete app with no file-size limit.
Who is the NARIKJSON (Enterprise) edition for?
Enterprise teams that need volume or site licensing, managed deployment and centralized updates. NARIKJSON is our top-tier edition, above Premium, for enterprise customers only — contact us for a tailored quote.
Do you offer a free tier?
Yes — Essential (OPENXMLJSON) and NARIKJSON Free are both free with monthly billing, and include the full app with no file-size limit. The paid Premium and NARIKJSON editions are the same apps on a yearly license.
How is a license delivered and what is a seat?
You receive a license key by email right after purchase. One seat activates OPENXMLJSON on up to two devices or operating systems for a single user.
What happens if I cancel my subscription?
Premium licenses are billed annually. If you cancel, your license stays valid until the next renewal date and you are not auto-charged for the following year.
Do you offer volume licensing?
Yes — volume and site licensing are part of the NARIKJSON Edition. If you're buying for an organization, contact us for pricing off the standard rate.
Ready to open your biggest file?
Start free with monthly billing, or take a yearly license — it's the same complete app either way.