Private browser utilities
Free Online Developer Tools
Focused tools for formatting, validating, converting, and working with developer data. Use them immediately without uploading project content or creating an account.
Available developer tools
Format structured data, test regular expressions, or investigate large server and application logs with focused local utilities.
Log & debugging tools
Stream files through local browser workers to investigate traffic, latency, status codes, clients, errors, and exceptions without uploading log content.
Serilog Analyzer
Explore Serilog JSON, CLEF, and text logs with error grouping and complete exception details.
Online Log Analyzer
Analyze server and application logs locally with filters, aggregates, and exports.
Nginx Log Analyzer
Investigate Nginx traffic, errors, clients, bandwidth, and recorded latency.
Apache Log Analyzer
Analyze Apache Common, Combined, and error logs in your browser.
Laravel Log Analyzer
Group Laravel exceptions, levels, repeated errors, and stack traces.
PHP Error Log Analyzer
Find repeated PHP fatal errors, warnings, notices, files, and source lines.
JSON Log Analyzer
Analyze NDJSON application logs with automatic common-field detection.
Server Log Analyzer
Detect and analyze supported server-log formats locally.
Access Log Analyzer
Analyze Nginx and Apache-compatible web access records.
Error Log Analyzer
Group application and server errors without uploading sensitive logs.
JSON & data tools
JSON Formatter & Validator
Format, validate, beautify, and minify JSON privately in your browser.
JSON Validator
Check JSON syntax and locate common parsing errors in your browser.
JSON to CSV
Convert object-based JSON into correctly escaped CSV with explicit nested-data handling.
CSV to JSON
Parse quoted CSV and turn each data row into predictable JSON.
Developer utilities
Working with tabular data?
Convert in either direction without uploading the source file.