Text & Developer Tools

Turn text or images into ASCII art, adjust fonts and size, and copy the result.

Format, minify and validate JSON to make API responses easier to read and debug.

Send OpenAI or Claude streaming requests and inspect events, assembled replies, tool calls and request timing.

Parse pasted SSE data and reconstruct OpenAI and Claude replies, tool arguments and token usage.

Format and validate YAML configuration to check indentation and syntax errors.

Convert JSON to YAML or YAML to JSON for configuration files and API data.

Convert CSV tables and JSON arrays both ways with quoted-field support for data preparation.

Convert Unix timestamps in seconds or milliseconds to dates, or dates to timestamps, for logs and API debugging.

Encode text as Base64 or decode Base64 content to inspect encoded text data.

Parse Cron expression fields and preview upcoming run times to check scheduled task settings.

Encode or decode URLs, paths and query parameters to inspect escaped characters and troubleshoot links.

Convert Chinese text to pinyin or pronunciation annotations with phrase matching and read-aloud support.

Remove duplicate lines, clean whitespace and sort text lists for keywords, IDs, names and logs.

Test regular expressions with live match highlighting and capture groups for extraction and validation rules.

Paste code, select a language and theme, preview syntax highlighting and copy the output for documentation.

Write Markdown with live formatting previews and inspect HTML output for articles and technical documentation.

Edit formatted text, inspect the HTML source and export content for web pages and articles.

Trim whitespace, remove blank lines, collapse extra spaces or combine multiple lines into one.

Compare two texts line by line and highlight additions and deletions for documents and configuration.

Write Mermaid diagram code, preview flowcharts and other diagrams live, and generate SVG graphics.

Count words, characters, lines and UTF-8 bytes to check text length and content limits.

Convert length, mass, temperature, volume and other units to compare measurements.

Convert integers between bases 2 and 36 with large-integer support for binary, octal and hexadecimal values.

Parse a URL's scheme, host, path and query parameters, including repeated parameters, without visiting it.

Encode special characters as HTML entities or decode named and numeric entities into text.

Convert text to and from Unicode escape sequences for Chinese characters, symbols and emoji.

Format, minify and validate XML to make documents easier to read and troubleshoot.

Convert XML and JSON both ways with attribute and ordered-node modes for data integration.