Best Free Online Developer Tools to Use in 2026
A practical, opinionated list of the best free online developer tools worth using in 2026, organized by category so you can find what you need fast.
Aug 08, 2026
SQL EXPLAIN Formatter
Format and beautify EXPLAIN / EXPLAIN ANALYZE output in table, tree, or JSON view
- Home
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- SQL EXPLAIN Formatter
Options
Formatted Output
Paste EXPLAIN output and click FormatRows
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DB Type
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View
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Query Cost
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What Is SQL EXPLAIN?
The EXPLAIN statement provides information about how MySQL or PostgreSQL executes a query. It shows the query execution plan, including table scan methods, join types, index usage, and estimated row counts. EXPLAIN ANALYZE actually executes the query and adds timing information.
How to Use This Tool
- Paste EXPLAIN output — Enter or paste MySQL or PostgreSQL EXPLAIN output into the input area.
- Select database type — Choose MySQL, PostgreSQL, or Auto-detect for automatic identification.
- Choose view mode — Select Table, Tree, or JSON format for the output display.
- Click Format — The tool parses the EXPLAIN output and presents it in the chosen format.
- Copy the result — Click Copy to copy the formatted output to your clipboard.
Frequently Asked Questions
Is my data sent to a server?
No. All processing is performed locally in your browser. Your SQL data never leaves your device.
What is EXPLAIN ANALYZE?
EXPLAIN ANALYZE actually executes the query and includes actual timing and row count information in the output, providing more accurate performance data than plain EXPLAIN.
What database systems are supported?
This tool supports both MySQL (EXPLAIN and EXPLAIN ANALYZE) and PostgreSQL (EXPLAIN, EXPLAIN ANALYZE, and EXPLAIN with BUFFERS and FORMAT JSON options).
Can I copy the formatted output?
Yes. Click the Copy button to copy the formatted output to your clipboard. The formatted text maintains its structure and alignment.
Is this tool free to use?
Yes. This tool is completely free with no usage limits or registration required.
Last updated: 17 Aug 2026
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