JSONL Viewer Pro (Mac Silicon)

Stop wasting hours wrestling with massive JSON Lines files. Analyze 10M+ rows in seconds—not minutes.

Your Current Workflow is Broken

You've been there: A 2GB JSONL file from your API logs. You load it into Excel... it crashes. You try pandas... your laptop fans scream. You write a custom script... and waste 2 hours.

There's a better way.

⚡ Blazing Fast Performance

Built with C++ and simdjson (the world's fastest JSON parser):

• 10M+ rows load instantly - Multi-threaded parsing means zero waiting
• Tested with 5GB+ files - Handle production-scale datasets without breaking a sweat
• Native Mac Silicon - Not another sluggish Electron app (only 6MB!)

🎯 The Features That Matter

Nested Object Flattening (This is the killer feature)

Tired of manually parsing data.user.profile.settings.theme?

JSONL Viewer Pro automatically expands ALL nested objects into sortable, filterable columns:

• data.device_serial
• sensor.temperature.celsius
• user.profile.email

Filter on any nested field with one click. No scripting. No pandas DataFrames. Just instant insights.

Advanced Filtering That Actually Works

• Text search across all columns simultaneously
• Numeric operators: >100, <=50, !=0, ==active
• Regex support (coming soon)

Example: Find all IoT devices with temperature spikes in 2 seconds:

sensor.temperature.celsius > 80 AND device.status == "active"

Professional Column Management

• Freeze columns - Keep IDs visible while scrolling through dozens of fields
• Hide/show any field - Focus on what matters
• Auto-sizing - Columns adjust to your data automatically

Works With Your Files

• ✅ .jsonl files
• ✅ .jsonl.gz (gzip compressed) - No need to decompress first
• ✅ Export filtered results - Share insights with your team
• ✅ Quick stats - Instant min/max/avg on any numeric column

Perfect For

• DevOps Engineers - Parse production logs 10x faster than grep/jq
• Data Scientists - Explore datasets before writing pandas code
• Backend Developers - Debug API responses with nested payloads
• IoT Engineers - Analyze telemetry from thousands of devices
• Anyone tired of fighting with Excel, pandas, or command-line tools

Privacy FIRST

• No internet connection required
• Your data never leaves your machine
• No analytics, no tracking, no cloud uploads
• One-time purchase, yours forever

Technical Details

• Built with C++, ImGui, and simdjson
• Native Apple Silicon (M1/M2/M3) performance
• Tiny ~6MB app footprint
• Multi-threaded architecture
• Lightweight and fast—not another bloated Electron app

Frequently Asked Questions

Q: Will this work with my gigantic 10GB file?
A: JSONL Viewer Pro has been tested with 5GB+ files. For 10GB+ files, performance depends on your Mac's RAM, but the multi-threaded engine is optimized for large datasets.

Q: What if my JSONL has really deep nesting (5+ levels)?
A: That's exactly what we built this for. All nested objects automatically flatten into columns, no matter how deep.

Q: Does this work with regular JSON (not JSON Lines)?
A: Currently only JSONL format is supported. Regular JSON support is planned for a future update.

Q: Can I export filtered results?
A: Yes! Export your filtered dataset as a new JSONL file.

🎉 Get 50% off today: Use code EARLYBIRD50 at checkout