Image, Color & Design
Color palettes, image tools, and visual utilities for creators. — 6 tools available.
Design tools help content creators, UI/UX designers, and web developers work faster with visual assets. Generate harmonious color palettes with WCAG accessibility contrast checking and export them directly to CSS variables or Tailwind config. Calculate exact pixel dimensions for any aspect ratio — from YouTube 16:9 to TikTok 9:16 — with one-click social media presets. Compress and resize images entirely in your browser using the HTML5 Canvas API, with a privacy-first approach that never uploads your files to any server. Whether you're designing a layout, optimizing images for web performance, or ensuring your color choices meet accessibility standards, these tools give you instant results without signing up.
6 Image, Color & Design Tools
Color Palette Generator
Generate harmonious 5-color palettes with WCAG accessibility contrast checking and one-click CSS/Tailwind export.
Aspect Ratio Calculator
Calculate pixel dimensions for any aspect ratio. Social media presets for YouTube, TikTok, Instagram, and more.
Image Resizer & Compressor
Resize and compress images using HTML5 Canvas. Set width, height, quality, or target file size. 100% browser-based — your images are never uploaded.
Color Picker
Pick colors and convert between HEX, RGB, HSL, CMYK. Check WCAG contrast ratios.
Hex to RGB Color Converter
Convert hex color codes to RGB and HSL values instantly. Includes color picker, CSS variable output, and example colors.
CSS Grid Generator
Build CSS grid layouts visually. Configure columns, rows, gap, and alignment properties with live preview. Copy generated CSS and HTML for any grid layout.
Frequently Asked Questions
What is WCAG color contrast and why does it matter?
WCAG (Web Content Accessibility Guidelines) defines minimum contrast ratios between text and background colors to ensure readability for people with visual impairments. Level AA requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Level AAA requires 7:1 and 4.5:1 respectively. Meeting these standards is a legal requirement in many jurisdictions and improves usability for all users.
Are my images uploaded to a server when I use the image tools?
No. UtilDaily's image tools process files entirely in your browser using the HTML5 Canvas API and File API. Your images are loaded into browser memory, processed locally, and the results are generated client-side. No image data is ever transmitted to any server. This makes the tools safe for processing sensitive, proprietary, or personal images.
What is an aspect ratio and why is it important?
An aspect ratio is the proportional relationship between width and height of an image or video (e.g., 16:9, 4:3, 1:1). Maintaining the correct aspect ratio prevents images from appearing stretched or squished. Different platforms require specific aspect ratios: YouTube thumbnails use 16:9, Instagram posts use 1:1, and Pinterest pins use 2:3. The aspect ratio calculator helps you find exact pixel dimensions for any ratio.