SQL formatter
SQL formatter lets you format PostgreSQL, MySQL, or SQLite SQL without connecting to a database in your browser.
SQL placeholder converter
SQL placeholder converter lets you convert named placeholders while preserving SQL strings and comments in your browser.
SQL placeholder converter
⌂ Inputs and results stay in this browser and are not automatically stored or sent.
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Input & settings
SQLSQL · 0 B
Arguments (JSON object)JSON · 0 B
Output
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Complete text result
How to use
Enter SQL and arguments separately and choose source and target placeholder styles.
Review the generated SQL alongside the argument mapping, especially for repeated names. This is not a blind replacement of symbols inside strings or comments. Treat unsupported syntax as outside the supported conversion scope.
Examples
SELECT * FROM users WHERE id = :id OR manager_id = :id
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{"id":7}Principles and limits
Each input is limited to 1,048,576 bytes, output to 33,554,432 bytes, and processing to 5,000 ms. Input is never silently truncated.
Guides
Related tools
JSON formatter
JSON formatter lets you format, minify, locate syntax errors, and choose indentation in your browser.