Design
Color Picker & Palette Extractor
Pick colors and extract palettes from uploaded images.
Browser-based Open Tool
100% Client-Side & Private — No Data Sent to Servers
Utility Tools — Free Online Developer & Designer Tools
Fast, free, privacy-friendly online developer tools that run directly in your web browser. 41 tools for formatting JSON, converting data, manipulating images, and editing text.
Design Tools(6 total)
Design
Favicon Generator
Generate a full favicon icon set from a single image and download as zip.
Browser-based Open Tool
Design
Gradient Generator
Create CSS gradients with a visual editor and copy the CSS output.
Browser-based Open Tool
Design
QR Code Generator & Reader
Generate QR codes from text or URLs and decode QR codes from images.
Browser-based Open Tool
Design
SVG Optimizer
Minify and clean up SVG files for production use.
Browser-based Open Tool
Design
CSS Gradient & Shadow Generator
Generate CSS gradients and box shadows with a visual editor.
Browser-based Open Tool
Why Choose Our Free Online Developer Utility Tools?
At utilitiestools.net, we provide a complete suite of fast, reliable, and privacy-first online developer tools engineered specifically for modern software engineers, web developers, content creators, and UI/UX designers. Every single utility tool in our collection operates 100% locally inside your web browser using WebAssembly and client-side JavaScript APIs. Your data, source code, API keys, JSON payloads, and uploaded media files are never transmitted to external remote servers, ensuring maximum privacy and data security.
JSON & Data Tools
Format, minify, validate, and convert JSON payloads instantly with interactive collapsible tree views, color syntax highlighting, and fast error diagnostics.
Text & Formatting Tools
Clean, transform, diff, encode, and decode text instantly. Includes Base64 converters, URL encoders, word counters, line sorting tools, and case converters.
Image & PDF Tools
Compress, resize, merge, and split PDF documents and images locally without quality degradation or server upload wait times.