Are NanoTools completely free to use?

Yes, all basic tools on NanoTools are completely free to use with no registration required. We offer premium features for power users.

Is my data secure when using NanoTools?

Your files are processed securely and are automatically deleted after processing. We do not store your files or data on our servers.

No installation required. All tools work directly in your browser on any device - computer, tablet, or smartphone.

We support a wide range of formats including PDF, JPG, PNG, WebP, GIF, JSON, XML, CSV, and many more depending on the tool.

Visualize SQL explain online for free. See query execution plans graphically. Optimize SQL performance.

Parse and visualize SQL EXPLAIN output

Supported Formats

• MySQL/MariaDB: Standard table format from EXPLAIN

• PostgreSQL: JSON format from EXPLAIN (FORMAT JSON)

• Displays operation tree, row estimates, and query costs

• All parsing is done client-side in your browser

Example commands:
MySQL: EXPLAIN SELECT * FROM users WHERE id = 1;
PostgreSQL: EXPLAIN (FORMAT JSON) SELECT * FROM users;

1

Execute EXPLAIN on your query

2

Enter EXPLAIN results

3

See execution plan tree

4

Identify slow operations

Supports EXPLAIN output from MySQL and PostgreSQL in both tabular and JSON formats.

The tree shows query operations hierarchically. Higher cost and row estimates indicate potential bottlenecks.

Focus on operations with high row estimates, full table scans, or operations without index usage.

Currently shows the execution plan. Use this to identify issues like missing indexes or inefficient joins.