All Online Tools
Explore our complete collection of developer and productivity utilities.
About Our Online Tools
Toolweb provides a comprehensive suite of free, high-performance utilities designed for developers, designers, and content creators. Our goal is to simplify daily tasks—whether it's converting image formats, formatting code, or generating palette ideas—without the need for software downloads or sign-ups. All tools run directly in your browser, ensuring your data remains private and secure.
Who Should Use These Tools?
- code Developers: Clean up JSON, convert HTML to Flutter, or generate UUIDs instantly.
- palette Designers: Compress images for the web, extract colors, or create CSS gradients.
- edit_note Creators: Resize images for social media, count words, or convert text cases.
Image Tools
Image Format Converter
Effortlessly convert images between JPG, PNG, WebP, GIF, and BMP formats instantly. Supports batch conversion with high-quality output.
Image Compressor
Reduce image file size by up to 80% without compromising quality. Support for PNG, JPG, and WebP compression for faster web loading.
Image Resizer
Resize images to exact pixel dimensions or use presets for Instagram, YouTube, and other social media platforms. Maintain aspect ratio perfectly.
Image Color Extractor
Analyze images to extract dominant colors and build beautiful color palettes. Export hex codes for your design projects.
Image Crop Tool
Crop images easily with custom dimensions or fixed aspect ratios. Perfect for social media posts and profile pictures.
Image to Base64
Convert images to Base64 text strings and vice versa. Support for PNG, JPG, GIF, and WebP.
Image DPI Changer
Change the DPI (Dots Per Inch) value of your images for high-quality printing. Calculate print dimensions instantly.
Developer Tools
Excel to JSON
Convert Excel spreadsheets (.xlsx, .csv) into formatted JSON arrays for use in web applications and APIs.
Excel ⇄ XML Converter
Convert Excel files to XML and XML back to Excel instantly. No upload, no server, 100% browser-based.
JSON Formatter
Beautify, validate, and minify JSON data. Highlight syntax errors and format messy JSON into a readable tree structure.
JSON to Dart
Instantly generate strongly-typed Dart classes from JSON objects. Essential for Flutter developers using API responses.
HTML to Flutter
Convert standard HTML code into Flutter Widget trees automatically. Save time building layout structures for mobile apps.
CSS Minifier
Minify and compress CSS code to reduce file size and improve website load times. Remove whitespace and comments instantly.
Regex Tester
Test, debug, and validate regular expressions against text strings. visual highlighting for matches and groups.
UUID Generator
Generate cryptographically unique UUIDs (v1 and v4) for databases and identifiers. Bulk generation supported.
Base64 Encoder
Encode text or binary data to Base64 strings and decode them back. Compatible with UTF-8 and other charsets.
Markdown to HTML
Convert Markdown syntax into clean, semantic HMML markup. Ideal for bloggers and content management systems.
Color & Design Tools
Color Picker
Identify and pick exact colors from images or generate color codes (HEX, RGB, HSL, CMYK) with a precision eyedropper.
Gradient Generator
Design beautiful linear and radial CSS gradients. Export code for Web, Flutter, and Tailwind CSS projects.
Contrast Checker
Check color contrast ratios against WCAG guidelines to ensure your design is accessible to everyone.
Text & File Tools
Word Counter
Real-time count of words, characters, sentences, and paragraphs. Analyze reading time and keyword density.
Case Converter
Convert text case instantly: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case.
Lorem Ipsum Generator
Generate custom Lorem Ipsum placeholder text for layouts. customizable paragraph length and formatting.
File Size Calculator
Convert between Bytes, KB, MB, GB, and TB. Useful for developers calculating storage and transfer rates.