Development Tools

Tool Directory

For code processing, API debugging, and engineering workflows.

A Java workbench for editing, formatting, and common code conversions.

Format JSON, JS, TS, HTML, CSS, Markdown, YAML, and Java in one place.

Run OCR locally in the browser for screenshots, scans, and image-to-text extraction.

Test regular-expression matches, inspect capture groups, and preview replacements directly in the browser.

Crop, rotate, flip, adjust, and export images directly in the browser.

Inspect full URLs, review query params, and rebuild links from base, path, query, and hash.

Generate UUID, ULID, and NanoID values in bulk with multiple output formats.

Test WebSocket connections in the browser, send messages, inspect traffic logs, and review ws/wss browser constraints.

Create a temporary room for up to six members, chat together, and send files to everyone currently online.

Process SRT, WebVTT, and ASS subtitles in the browser with format conversion, timeline shifting, and structured previews.

Inspect local audio and video files in the browser with ffprobe, including container, duration, bitrate, and stream metadata, without uploading them.