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 lettermark favicon PNGs in nine sizes from text, colours and a corner radius.
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
Generate QR codes from text or URLs and download them as PNG or SVG.
Browser-based Open Tool
Design
SVG Optimizer
Minify and clean up SVG files for production use.
Browser-based Open Tool
Design
CSS Box Shadow Generator
Build CSS box shadows with a visual editor and copy the generated CSS.
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.