The eyedropper tool is one of the most-used features in any image editor. Click a pixel, get its color. Simple, fast, essential. But what if you don't have Photoshop or Figma open? What if you just need to grab a color from a screenshot or a downloaded image without launching a full design application?
Online eyedropper tools solve this. They work directly in your browser — no installs, no extensions, no sign-ups. This guide covers what an eyedropper is, how online alternatives compare to browser extensions, and how to use one for your CSS and design workflow.
What Is an Eyedropper Tool?
An eyedropper (also called a color picker or color sampler) is a tool that reads the exact color of a specific pixel in an image. When you click on a point, the tool returns the color value in formats like HEX, RGB, or HSL.
The eyedropper has been a staple of graphic design software since the early days of Photoshop. Today, it's built into virtually every design tool — Figma, Sketch, GIMP, Canva, and more. But these all require you to have the software open and the image loaded in it.
Browser Extensions vs. Online Tools
There are two main ways to get eyedropper functionality without a design app:
Browser Extensions
Extensions like "Eye Dropper" or "ColorZilla" for Chrome and Firefox add an eyedropper icon to your browser toolbar. Click it, hover over any element on any webpage, and click to capture the color.
Pros:
- Works on live web pages, not just images
- Always available in the toolbar
- Can pick colors from CSS-rendered elements
Cons:
- Requires installation and browser permissions
- Only works on web content visible in the browser
- Cannot pick colors from uploaded image files (unless the image is on a web page)
- Extension updates can break functionality or introduce privacy concerns
Online Image Color Pickers
Tools like BestPNG's color picker let you upload any image and click anywhere to get the color value.
Pros:
- No installation or permissions required
- Works with any image file (PNG, JPG, WEBP, screenshots)
- Shows HEX, RGB, and HSL simultaneously
- Works on any device with a browser
Cons:
- Requires uploading an image (can't pick from live web pages)
- Requires opening a browser tab
When to Use Which
| Scenario | Best Tool |
|---|---|
| Picking a color from a live website | Browser extension |
| Extracting colors from an image file | Online color picker |
| Working on a phone or tablet | Online color picker |
| Avoiding extension installs | Online color picker |
| Quick CSS color from a rendered page | Browser extension |
For most image-based color picking tasks, an online tool is simpler and more flexible.
Using BestPNG's Online Eyedropper
BestPNG's color picker is a free online eyedropper that works in any browser.
How to use it:
- Open bestpng.com/tools/color-picker
- Upload your image (drag and drop or click to browse)
- Move your cursor over the image — the color preview updates in real time
- Click to lock in a color
- Copy the HEX, RGB, or HSL value
The entire process happens locally in your browser. Your image is not uploaded to any server, so there are no privacy concerns even with confidential design files.
Developer Use Cases
Matching Colors from Design Mockups
A designer sends you a PNG mockup. You need the exact button color, background shade, and text color for CSS. Instead of messaging the designer and waiting for a response:
- Upload the mockup to the color picker
- Click the button → copy the hex → paste into your CSS
- Click the background → copy → paste
- Done in 30 seconds
Extracting Colors from Screenshots
You see a website with great colors but can't inspect the CSS (maybe it's in a video, a PDF, or a competitor's screenshot). Take a screenshot, upload it, and pick the colors directly.
Building CSS Variables from Brand Guidelines
When a brand guide is provided as a PDF or image (not a Figma file), extract all the brand colors with the color picker and set them up as CSS custom properties:
:root {
--brand-primary: #2A7FBA;
--brand-secondary: #E8553D;
--brand-neutral: #F5F5F5;
}
Checking Contrast Ratios
After picking a foreground and background color, use a contrast checker tool to verify they meet WCAG accessibility guidelines. This workflow is essential for ensuring text readability.
Tips for Accurate Online Color Picking
Avoid Picking at Edges
Edges between two colors often have anti-aliased pixels — transition pixels that blend the two adjacent colors. Click in the center of the color region you want, not at its border.
Account for Image Compression
JPG compression introduces subtle color shifts. If you're matching a brand color, work from a PNG source file whenever possible. PNG uses lossless compression and preserves exact color values.
Use a Calibrated Display
Your monitor's color profile affects how colors appear. A color that looks perfect on your screen might look different on another device. For professional color work, use a calibrated display or cross-check on multiple devices.
Pick from High-Resolution Sources
Low-resolution images have fewer pixels, which means more compression artifacts and less accurate colors. Use the highest resolution source available for color extraction.
Chrome's Built-In Eyedropper (CSS Color Input)
Modern Chrome (version 95+) has a built-in eyedropper accessible through any color input field in DevTools. When you click a color swatch in the CSS panel, you'll see an eyedropper icon that lets you pick any color from the screen.
This is useful but limited — it only works within DevTools and requires opening the inspector. For picking colors from standalone image files, an online tool like BestPNG is more direct.
Frequently Asked Questions
Can I use an online eyedropper on my phone?
Yes. BestPNG's color picker works on mobile browsers. Upload an image from your camera roll, tap the area you want to sample, and the color values appear immediately.
Is there a keyboard shortcut for the browser eyedropper?
Chrome's built-in eyedropper (in DevTools) doesn't have a default keyboard shortcut, but browser extensions like ColorZilla often let you assign custom hotkeys. Online color pickers don't have native shortcuts since they run in a web page.
Can I pick multiple colors from the same image?
Yes. With BestPNG's color picker, you can click different areas of the same uploaded image as many times as you want without re-uploading. Each click updates the displayed color values.
How accurate are online color pickers compared to Photoshop?
Equally accurate for pixel-level color reading. Both read the exact RGB values of the pixel you click. The difference is in surrounding features — Photoshop offers averaging, sampling area control, and color management profiles. For simple "what color is this pixel," the results are identical.
Conclusion
You don't need Photoshop or a browser extension to pick colors from images. BestPNG's online color picker gives you a free, instant eyedropper tool that works on any device, with any image, and outputs HEX, RGB, and HSL values ready for your CSS or design tool.
Upload an image, click a pixel, copy the color. That's it.