Build GraphQL subscription queries with custom event names and payload fields. Generate ready-to-use subscription strings.
Generate realistic webhook payload examples with customizable event names and data fields. Test your webhook handlers with realistic data.
Test GraphQL queries with variables. Format queries and variables, and preview formatted responses for development and debugging.
Format and prettify GraphQL queries with proper indentation. Makes complex nested queries readable and maintainable.
Expression evaluator with keypad and history, ETA calculator with distance and speed, and a stopwatch/chronometer with lap recording.
Counts characters with and without spaces and compares your text against platform-specific limits — Twitter/X posts (280), SMS messages (160), SEO meta descriptions (160), Facebook posts (63,206), and LinkedIn summaries (2,600). Real-time counting with space/no-space toggle.
GraphQL Subscription Builder lets you build GraphQL subscription queries with custom event names and payload fields. Generate ready-to-use subscription strings.. Everything runs inside your browser — nothing is uploaded to a server. It works on any device with a modern web browser.
Build GraphQL subscription queries with custom event names and payload fields. Generate ready-to-use subscription strings. It's ideal for developers, designers, and anyone who needs to build graphql subscription queries with custom event names and payload fields without installing software or sending data to external servers.
Direct text entry, file upload, or URL-based input — depending on the tool. Paste or type your content directly into the provided editor area.
Yes. After the initial page load, GraphQL Subscription Builder runs entirely on your device with no internet connection needed. All processing is done locally.
Tools cover JavaScript, CSS, HTML, SQL, Python, JSON, XML, CSV, and more. Check individual tool descriptions for specifics.
No. All code processing — formatting, minification, conversion, hashing — runs locally in your browser.
Yes. Since processing is local, performance depends on your device. Most operations handle large files without issue.
Yes. SQL uses sql-formatter, JSON uses native JSON.parse, and other formatters follow widely adopted formatting rules.
Yes. All developer tools work fully offline after the initial page load.
Time Converter
Convert between time units including seconds, minutes, hours, days, weeks, months, and years with precise decimal results.
Diff Checker
Compares two input texts side-by-side, highlighting inserted, deleted, and changed lines with distinct background colors.
Regex Tester
Provides an interactive environment where users can write a regular expression pattern, test it against sample strings, and view real-time match.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.
JS Minifier
Strips comments, whitespace, and shortens local variable names in JavaScript source without altering execution semantics.
Base64 Encode/Decode
Encodes text or small files into Base64 strings and decodes them back with automatic MIME-type detection for binary safety.