UtilityKit — All Tools
Browse 500+ browser-based utilities for developers, businesses, and creators. Choose a category to find formatters, converters, generators, and inspectors — all processed locally in your browser.
JSON Utilities
Format, validate, compare, minify, and schema tools for JSON data.
Browse JSON UtilitiesEncoding & Decoding
Base64, URL, HTML Entity, and binary data converters.
Browse Encoding & DecodingSecurity & Crypto
JWT decoders, hash generators, password generators, and key utilities.
Browse Security & CryptoGenerators
UUID, QR codes, Lorem Ipsum, color palettes, and random data generation.
Browse GeneratorsCSS Tools
Grid, flexbox, gradients, box shadows, minifiers, and formatters.
Browse CSS ToolsText & String
Diff checkers, case converters, word counters, and string manipulation.
Browse Text & StringSQL Tools
SQL query formatting, validation, schema convert, and query building.
Browse SQL ToolsColor Tools
HEX/RGB/HSL conversion, contrast checkers, and color space tools.
Browse Color ToolsTime & Date
Unix timestamp converters, cron expression parsers, and timezone tools.
Browse Time & DateNetwork & Web
URL parsers, HTTP status codes reference, query string tools.
Browse Network & WebData Formats
CSV to JSON, JSON to CSV, YAML to JSON, and Markdown tools.
Browse Data FormatsTypeScript Tools
JSON to TypeScript interface, type generators, and TS helpers.
Browse TypeScript ToolsRegex Tools
Regular expression testers, matchers, and pattern builders.
Browse Regex ToolsGit Utilities
.gitignore generators, conventional commit helpers, and changelog formatters.
Browse Git UtilitiesHTML Utilities
HTML formatters, minifiers, table generators, and HTML to Markdown.
Browse HTML UtilitiesFlutter & Mobile
JSON to Dart models, Material 3 themes, go_router, validators, FlutterFlow snippets, and Firestore rules — all local.
Browse Flutter & MobileXML Utilities
XML formatters, validators, XML to JSON, and JSON to XML converters.
Browse XML UtilitiesMath & Number Calculators
Basic and scientific calculators, percentages, fractions, averages, powers, logs, number theory, bases, and more — hub tools with modes, not thin duplicates.
Browse Math & Number CalculatorsAlgebra, Sequences & Matrices
Equation solvers, polynomials, complex numbers, sequences, permutations, matrix algebra, interpolation, and proportionality — consolidated hubs.
Browse Algebra, Sequences & MatricesImage Tools
Client-side image to base64, SVG optimizer, and SVG placeholder tools.
Browse Image ToolsImage Converters
Free online image format converters — JPG, PNG, WebP, AVIF, HEIC, SVG, GIF, TIFF, BMP, ICO, and more. Convert, compress, and strip metadata locally in your browser.
Browse Image ConvertersImage Resizers
Free online image resizers — by pixels, percentage, width, height, longest/shortest edge, half size, double size, and custom dimensions. Resize without stretching, keep aspect ratio, and export PNG, JPG, or WebP locally.
Browse Image ResizersBatch Image Resizing
Free batch and bulk image resizers — resize multiple images at once by width, height, percentage, or exact size; compress, convert, rename, strip metadata, create thumbnails, square/landscape/portrait crops, and download as ZIP. 100% browser-based.
Browse Batch Image ResizingAspect Ratio & Crop
Free aspect ratio image resizers and crop tools — crop to 1:1, 4:3, 16:9, 9:16, custom ratios, center crop, smart crop, pixel/percentage crop, freeform cropper, and image aspect ratio calculator. Local browser processing only.
Browse Aspect Ratio & CropAPI & Curl
Curl command generators, REST clients, and OpenAPI specs viewers.
Browse API & CurlDocker, Kubernetes & DevOps Config
Dockerfile linters, Kubernetes YAML validators, Helm chart helpers, and CI config tools.
Browse Docker, Kubernetes & DevOps ConfigCloud & Infrastructure Config
Terraform formatters, AWS CloudFormation validators, and infrastructure-as-code utilities.
Browse Cloud & Infrastructure ConfigReact, Vue & Angular
Component scaffolds, JSX formatters, Vue SFC helpers, and Angular template utilities.
Browse React, Vue & AngularMulti-language Code Generators
Generate boilerplate for Python, Go, Rust, Java, C#, and other languages from schemas.
Browse Multi-language Code Generators