UtilityKitFree Online Tools for Work, Development and Everyday Tasks
Format, convert, and generate data in your browser. No uploads.Free browser-based tools for developers, businesses and creators. Format, convert, generate and inspect data locally in your browser — no login, no uploads.
Popular Tools
Fast starters for everyday formatting, encoding, and generation tasks.
JSON Formatter
Beautify and format JSON with indentation and validation.
JWT Decoder
Decode JWT header and payload locally in your browser.
Base64 Encoder
Encode and decode Base64 text without uploading data.
UUID Generator
Generate UUID v4 identifiers instantly.
Password Generator
Create strong random passwords with customizable rules.
QR Code Generator
Create QR codes from text or URLs in your browser.
JSON to Dart
Generate Flutter Dart model classes from JSON samples.
CSS Formatter
Format and tidy CSS for readability.
Explore by Category
Browse 500+ utilities organized for quick access.
JSON Utilities
Format, validate, compare, minify, and schema tools for JSON data.
Encoding & Decoding
Base64, URL, HTML Entity, and binary data converters.
Security & Crypto
JWT decoders, hash generators, password generators, and key utilities.
Generators
UUID, QR codes, Lorem Ipsum, color palettes, and random data generation.
CSS Tools
Grid, flexbox, gradients, box shadows, minifiers, and formatters.
Text & String
Diff checkers, case converters, word counters, and string manipulation.
SQL Tools
SQL query formatting, validation, schema convert, and query building.
Color Tools
HEX/RGB/HSL conversion, contrast checkers, and color space tools.
Time & Date
Unix timestamp converters, cron expression parsers, and timezone tools.
Network & Web
URL parsers, HTTP status codes reference, query string tools.
Data Formats
CSV to JSON, JSON to CSV, YAML to JSON, and Markdown tools.
TypeScript Tools
JSON to TypeScript interface, type generators, and TS helpers.
Regex Tools
Regular expression testers, matchers, and pattern builders.
Git Utilities
.gitignore generators, conventional commit helpers, and changelog formatters.
HTML Utilities
HTML formatters, minifiers, table generators, and HTML to Markdown.
Flutter & Mobile
JSON to Dart models, Material 3 themes, go_router, validators, FlutterFlow snippets, and Firestore rules — all local.
XML Utilities
XML formatters, validators, XML to JSON, and JSON to XML converters.
Math & Number Calculators
Basic and scientific calculators, percentages, fractions, averages, powers, logs, number theory, bases, and more — hub tools with modes, not thin duplicates.
Algebra, Sequences & Matrices
Equation solvers, polynomials, complex numbers, sequences, permutations, matrix algebra, interpolation, and proportionality — consolidated hubs.
Image Tools
Client-side image to base64, SVG optimizer, and SVG placeholder tools.
Image 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.
Image 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.
Batch 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.
Aspect 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.
API & Curl
Curl command generators, REST clients, and OpenAPI specs viewers.
Docker, Kubernetes & DevOps Config
Dockerfile linters, Kubernetes YAML validators, Helm chart helpers, and CI config tools.
Cloud & Infrastructure Config
Terraform formatters, AWS CloudFormation validators, and infrastructure-as-code utilities.
React, Vue & Angular
Component scaffolds, JSX formatters, Vue SFC helpers, and Angular template utilities.
Multi-language Code Generators
Generate boilerplate for Python, Go, Rust, Java, C#, and other languages from schemas.
Built for Work, Development & Everyday Tasks
Local, free tools — no signup.Why developers, small businesses, and creators choose UtilityKit over traditional utility websites.
Processed in Your Browser
Instant Results
No Account Required
Dedicated Tool Pages
Processed in Your Browser
Documents, data, and text you enter into tools stay on your device. Inputs are not uploaded to our servers for tool execution.
Instant Results
No waiting on remote APIs. Tools calculate immediately using modern Web APIs and optimized client-side code.
No Account Required
Jump straight to the tool you need. Over 500 utilities available without signup, subscriptions, or passwords.
Dedicated Tool Pages
Every utility has its own clean URL — easy to bookmark, share with colleagues, and find through search engines.