Programming & Development 130

Automatically handle special character escaping in i18n translation files, supporting both JSON and plain text formats, fixing parsing errors caused by curly braces, @ symbols, etc.

Escape and unescape special characters in JavaScript strings, including quotes, newlines and control characters

Escape and unescape special characters in HTML strings to prevent XSS attacks

Convert strings to valid JSON format or restore, handling escape and unescape of double quotes and control characters

Convert special characters to XML entities for valid XML documents

Properly handle commas, quotes, and newlines in CSV

Escape special characters in SQL strings to prevent SQL injection attacks

Escape special characters in regular expressions to match them literally

Escape special characters in C/C++ strings, including octal and hexadecimal sequences

Escape special characters in Java strings, including Unicode escape sequences

Multi-rule string escape and unescape tool supporting JSON, JavaScript, Java, HTML, XML, CSV, XSI and custom mappings

Online CSS character escape tool with identifier/string modes for escaping and unescaping selectors, supporting Chinese and special symbols, ideal for frontend styling, selector debugging, and automation scripts.

Online Bash command escape and unescape tool with single, double, and ANSI-C quoting styles for script argument handling and safer command execution.

Convert CSV data to SQL CREATE TABLE and INSERT statements for multiple databases

Convert JSON data to SQL CREATE TABLE and INSERT statements with multiple database support

Bidirectional converter between JSON and URL parameters with form encoding, JSON URL encoding and bracket notation

Bidirectional conversion between JSON and CSV formats with nested object flattening and custom delimiters

Bidirectional conversion between JSON and YAML formats with custom indentation and flow/block styles

Bidirectional converter between JSON and XML with custom root/item nodes and XML attribute handling modes

Convert JSON data into TypeScript interface definitions with nested object and array type inference

Online JSON to code converter for TypeScript, Java, C#, Go, Python and more, ideal for API schema generation, model scaffolding, and development debugging.

Markdown & HTML converter supports bidirectional conversion (Markdown to HTML and HTML to Markdown), live preview, and result export for docs, blog formatting, and content migration.

HTML to text converter removes tags, preserves readable line structure, and exports TXT for web content extraction, rich-text cleanup, and log preprocessing workflows.

Online JSON to Protobuf converter with Proto2/Proto3 syntax and field type mapping to generate ready-to-use .proto message definitions

Online JSON TOML converter with bidirectional conversion, syntax checks, sample loading, copy, download, and local offline processing

Online JSON PHP array converter with bidirectional conversion between JSON and PHP array syntax, formatted output, and export support

Upload an avatar, add National Day stickers, adjust with drag/scale/rotate, and export PNG images

Generate unique identifiers (UUID/GUID) with custom format support

Multilingual mock data generator supporting names, addresses, emails, and various export formats like JSON, CSV, SQL

Generate MyBatis Mapper, Entity and interfaces from table structure

Automatically generate bulk INSERT test data based on table structure (DDL), supports MySQL, PostgreSQL, SQL Server, etc.

Online ULID generator for sortable 26-character unique IDs, with batch generation, Raw/JSON output, and one-click copy

Online file merge and split tool that splits text files by lines or size and merges multiple files with custom separators

Batch read files or folders to extract filename or relative path lists with deduplication, copy and export support

Name colors from HEX/RGB/HSL with confidence, format conversion, distribution and palette generation for design and frontend development

Encode text into socialist core values phrases or decode core values strings back into the original text

Generate 50-950 shades from a base color and export Tailwind config and CSS variables for branding and theming

Custom-field mock data generator with reusable templates and export to JSON, CSV, SQL, XML, and YAML

Online API document generator with endpoint and parameter editing, exporting Markdown, HTML, OpenAPI, and cURL examples for API design and integration docs

Online SQL to entity class converter parsing CREATE TABLE statements into Java, Python, C#, TypeScript, PHP, and Go model code

Online XML to entity class tool parsing nodes, attributes, and nested structures into multi-language model code

Online JSON to entity class tool parsing JSON schema into TypeScript, Java, Python, C#, Go, and Kotlin model code

Online Swagger viewer for importing OpenAPI and Swagger docs, browsing endpoint details, parameters and response examples, with built-in request testing

Online Git command generator with visual options for init, clone, commit, branch, push, pull, and merge command creation in real time

Online Git cheat sheet with categorized commands for config, init, commit, reset, and branch tasks, plus one-click copy for daily workflows.

Online Docker command generator with visual options for container run, image build, network create, and Docker Compose command generation

Online Linux command generator with visual options for file, system, network, archive, package, permission, disk, and monitor commands

Online Chmod permission calculator for real-time conversion between Linux file permission octal values and symbolic modes, with instant chmod command generation

Online regex cheat sheet with syntax reference, common patterns, and live matching test

Online JSON Schema generator that infers structure from JSON data and builds standard schemas

Online Spine animation editor for importing skeleton, atlas, and textures with structure preview and playback controls

Online JVM startup parameter configurator with visual tuning for memory, GC, compiler, and runtime options, generating startup commands in real time

Online code snippet converter with multi-language syntax transformation, rule hints, and copy-ready output for faster cross-language migration

Online SQL query optimizer with multi-database performance analysis, index suggestions, and risk hints for early slow-query detection

Online environment variable manager with multi-environment grouping, import/export workflows, and sensitive field handling for development and deployment configuration maintenance

Online algorithm complexity calculator with time and space estimation, growth curve visualization, and optimization suggestions for code review and performance pre-checks

Test and debug regular expression patterns with instant match results and replacement functionality

Reference table of file extensions and MIME types with search and copy

Parse, edit, visualize and convert CSV data with CSV to JSON conversion support

Online CSS design spec checker for colors, typography, spacing, radius, shadow, and contrast, with batch CSS validation support

Ultimate CSV toolbox integrating cleaning, sorting, conversion and validation

Comprehensive JSON tool suite: compare JSON differences, validate Schema, JSONPath queries, key sorting, flatten/unflatten. Essential developer toolkit

Check Chinese content in frontend code to help developers identify text that needs internationalization. Supports intelligent detection of mixed HTML, CSS, and JavaScript code, automatically filtering comment content

XPath tester validates expressions online with node path details for crawler rule debugging and XML/HTML parsing workflows.

HTML visual editor with WYSIWYG formatting, heading and list editing, code blocks, and live HTML output for rich-text cleanup, email templates, and frontend mockups.

Online URL canonicalizer that removes tracking parameters and unifies protocol and hostname format to produce canonical links for SEO and link governance

Online Docker Compose editor with templates, YAML validation, service topology preview, and command generation for local development and deployment checks.

Online Web Component Analyzer for React, Vue, and Angular structure scanning, dependency statistics, complexity evaluation, and risk hints for code review and refactoring planning.

Generate mock response data from JSON Schema with array strategy, batch count, Chinese content, and structure stats

Online API contract tester for request execution, response checks, contract assertions, and stress tests in integration and regression workflows.

Online JSON XML validator with syntax checks, error location, and formatted preview for API integration, configuration verification, and debugging workflows.

Online URL parameter builder with visual query editing, encoding controls, URL parsing, and copy output for API debugging and link sharing.

Online Postman collection converter transforms Collection JSON into cURL, HAR, OpenAPI, and Markdown outputs for API debugging and documentation migration.

Online gitignore generator builds ignore rules by project stack, OS, and IDE with custom additions and file export.

Online package.json tool for validation, formatting, analysis, and template generation in Node project setup and dependency troubleshooting.

Online GraphQL query builder with visual Query and Mutation field configuration and statement generation.

Online JS benchmark tool for function timing, algorithm comparison, memory usage, rendering cost, and async concurrency evaluation.

Online Dockerfile generator with base image, env, port, startup command, and multi-stage build options to create ready-to-use Dockerfile templates quickly.

Online Kubernetes YAML generator with visual Deployment, Service, ConfigMap, and Ingress setup for real-time manifest output and download.

Online OpenAPI spec generator with visual API info and endpoint editing, generating OpenAPI 3.0 documents in real time and exporting JSON or YAML.

Convert titles into SEO-friendly URL slugs with separator, length, stop-word, and multilingual options.

Online CSS layout generator with visual Flexbox and Grid settings, live preview, and CSS copy/download for frontend layout prototyping and teaching demos.

Online SVG path editor with visual command editing, shape presets, style controls, and SVG code export/download.

Upload SVG icons and generate icon-font @font-face rules plus Unicode mapping CSS with custom prefix and start code for frontend integration and icon library maintenance.

Online SVG code editor with real-time preview, syntax validation, template snippets, and multi-format export for icon creation and frontend debugging.

Online CSS gradient generator with visual linear, radial, and conic editing, stop management, presets, and CSS copy for web background design and frontend style debugging.

Online CSS shadow generator with visual box-shadow/text-shadow controls, layered shadow stacking, and code copy for frontend styling and UI design debugging.

Online CSS border generator with visual controls for border width, style, color, radius, and image borders, ideal for component styling, frontend debugging, and design handoff.

Online web font pairing tool with heading/body search, preset combinations, live typography preview, readability scoring, and CSS export for UI design and frontend debugging.

Online CSS animation generator with visual keyframe editing, live preview, and code copy for interaction effects development, UI style debugging, and teaching demos.

Online Bezier curve editor with draggable control points, easing presets, animation previews, and one-click CSS/JavaScript timing code generation.

Online CSS clip-path generator with visual polygon, circle, ellipse, and inset editing, plus code copy and SVG/PNG export.

Online CSS filter generator with visual controls for blur, brightness, contrast, saturate and more, with live preview and one-click CSS code copy.

Online CSS background filter generator with visual backdrop-filter controls, live frosted-glass preview, and one-click CSS copy for modals, cards, and navigation bars.

Online CSS transform generator with visual controls for translate, rotate, scale, skew, and transform-origin, live preview, and one-click CSS copy for frontend motion and interaction debugging.

Online CSS border radius generator with per-corner controls, quick presets, and shape templates for live preview and one-click border-radius CSS copy.

Online CSS golden ratio calculator with golden section sizing, visual split preview, and automatic typography and spacing scale generation for web layout design and frontend styling.

Online CSS line-height calculator with font-size, ratio, and baseline grid sync, live text preview, common size table, and one-click CSS code copy.

Online CSS typography scale generator with base size, ratio type, and level count controls, live hierarchy preview, and one-click CSS variable output.

Online CSS letter spacing preview tool with live letter-spacing controls, font-size linked preview, and one-click CSS code copy.

Online CSS inner shadow generator with visual inset box-shadow controls, live preview, and code copy for pressed buttons and inset card UI styling.

Online CSS text shadow generator with multi-layer controls, live preview, and one-click copy for neon glow headlines and typography debugging.

Online CSS mask-image generator with linear/radial/conic gradient controls, live preview, and one-click CSS copy for fade masks and UI animation debugging.

Online CSS blend mode preview tool to compare 16 mix-blend-mode effects and copy CSS instantly for UI effects and overlay styling debugging.

Online CSS counter generator for counter-reset/counter-increment auto numbering with prefixes/suffixes and multiple formats, ideal for docs, outlines, and step lists.

Online CSS grid system generator to create responsive Flexbox/CSS Grid column classes with breakpoints, gaps and container settings for layout development.

Online CSS spacing calculator that generates a spacing scale from a base unit and scale type, previews tokens, and exports CSS variables and Tailwind spacing config.

Detect XSS script risks in text by scanning tags, event handlers and dangerous protocols with batch checks and risk grading

Detect SQL injection risks in input by scanning UNION, boolean, error-based and time-based patterns with batch checks and defense tips

Scan code and configs for API keys, passwords, tokens and database URLs with risk grading and location hints

Scan text for PII such as ID numbers, phone numbers, emails and bank cards, with risk levels and position hints for log review and compliance checks

Online data sampling, bucketing and grouping tool with random, systematic, stratified and cluster sampling, running locally for privacy

Visually build trees, graphs, arrays and linked lists with one-click multi-language code generation

Visualize bubble, selection, insertion, merge, and quick sort with step mode, speed control, and live compare/swap/write counters

Online Docker Run to Docker Compose converter that parses docker run commands and generates compose YAML with unmappable option and error hints

Online string obfuscation masking tool with keep-first/keep-last settings and optional whitespace preservation for safe display of sensitive data

Extract image URLs from HTML by pulling img src links with optional dedup, copy, and TXT export for template audits, asset lists, and scraping review