Free tools for your website
Updated Free mock REST & WebSocket APIs
Give your readers an accurate, always-up-to-date tool without writing code. Pick one, set the colors and width, and paste the snippet into your page.
How to embed one
- Open the tool you want and scroll to "Embed this tool on your site".
- Choose width, light or dark theme, accent color and compact mode — the live preview updates instantly.
- Copy the code and paste it into an HTML block. The widget adjusts its height automatically.
Generators (15)
- Random Number Generator
- Dice Roller
- Coin Flip
- Random Name Picker
- Password Generator
- Passphrase Generator
- Random String Generator
- API Key Generator
- Barcode Generator
- UPC Barcode Generator
- EAN-13 Barcode Generator
- Code 128 Barcode Generator
- Code 39 Barcode Generator
- QR Code Generator
- Wi-Fi QR Code Generator
Random Number Generator
Text tools (8)
Word Counter
Free word counter: words, characters, sentences, paragraphs, reading and speaking time, keyword density and readability score a…
Character Counter
Count characters with and without spaces as you type.
Diff Checker
Compare two texts or files and highlight every difference, side by side or inline, by line or word.
Case Converter
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case or CONSTANT_CASE instantly.
Remove Duplicate Lines
Remove duplicate lines from any list or text and keep the original order.
Sort Lines Alphabetically
Sort lines alphabetically A–Z or Z–A, naturally (file2 before file10), numerically or by length.
Text Cleaner — Remove Extra Spaces & Empty Lines
Clean up pasted text: remove extra spaces and empty lines, trim lines, fix smart quotes, strip HTML, emoji and invisible charac…
Remove Line Breaks
Remove line breaks from text copied from PDFs or emails.
Color & CSS (8)
Color Picker
Free online color picker: pick from a big HSV picker or your screen, get HEX, RGB, HSL, HSV, CMYK and OKLCH, plus tints, shades…
HEX to RGB Converter
Convert a hex color code to RGB instantly, and back.
RGB to HEX Converter
Convert RGB values to a hex color code instantly.
HEX to HSL Converter
Convert hex color codes to HSL (hue, saturation, lightness) and back, with sliders for each channel.
Color Contrast Checker
Check text and background contrast against WCAG 2.2 AA and AAA for normal text, large text and UI components.
CSS Gradient Generator
Design linear, radial and conic CSS gradients with draggable color stops, an angle wheel, OKLCH blending and presets.
CSS Box Shadow Generator
Design CSS box-shadows visually: multiple layers, inset, blur, spread, color and opacity with a live preview card.
Color Palette Generator
Generate a full 50–950 color scale from one base color in OKLCH, plus complementary, triadic and analogous palettes.
Converters (2)
PX to REM Converter
Convert px to rem (and rem to px, em, pt) with any base font size.
REM to PX Converter
Convert rem to px instantly with your root font size (default 16px), plus em, pt and %.
Frequently asked questions
Is it really free to embed a tool?
Yes. Every tool on MockFox is free to embed on any site, blog or intranet. We only ask that you keep the attribution link under the widget.
Does it work on WordPress, Squarespace or Wix?
Yes. Paste the snippet into a "Custom HTML" / embed block. If your platform strips the script tag, the iframe still works with a fixed height.
Will it slow down my page?
The iframe is lazy-loaded and the helper script is under 1 KB. Nothing loads until a visitor scrolls near it.
Can I match my brand colors?
Yes: pick light or dark, any accent color, a width, and a compact mode without the title. The widget resizes itself to fit its content.
Do you track my visitors?
No cookies and no personal data. Everything run in the visitor's browser; we only count anonymous views.