Test string templates with {{variable}} placeholders against JSON variables. Everything runs locally in your browser — nothing is uploaded.
Test GraphQL queries with variables. Format queries and variables, and preview formatted responses for development and debugging.
Format and beautify GraphQL variables JSON with proper indentation. Ensure your variables are correctly structured before sending queries.
Provides an interactive environment where users can write a regular expression pattern, test it against sample strings, and view real-time match. Everything runs locally in your browser — nothing is uploaded.
Convert messy CSV or Excel sheets from clients into clean JSON in one batch. Handles missing values, nested rows, and generates strict JSON schemas for 50+ files at once. Everything runs locally in your browser — nothing is uploaded.
Bidirectional YAML to JSON and JSON to YAML conversion with auto-format detection and real-time preview. Perfect for configuration files, API payloads, and data migration.
String Template Tester lets you test string templates with {{variable}} placeholders against JSON variables. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Test string templates with {{variable}} placeholders against JSON variables. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Paste or type your content directly into the provided text area.
Yes. After the initial page load, String Template Tester runs entirely on your device with no internet connection needed. All processing is done locally.
Test string templates with {{variable}} placeholders against JSON variables. All processing runs locally — no code is sent to any server.
Tools cover JavaScript, CSS, HTML, SQL, Python, JSON, XML, CSV, and more. Check the tool description for specifics.
Yes. Since processing is local, performance depends on your device. Most operations handle large files without issue.
Yes. Formatters use well-known libraries (sql-formatter, Prettier-compatible patterns) and follow widely adopted rules.
String Inspector
Inspect any string — view character count, byte length, word count, line count, Unicode code points, and non-ASCII character breakdown.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.