Embed Free Tools on Your Website

Give your visitors useful interactive tools without writing a line of code. Pick a widget below, copy the snippet, paste it into your page — done.

What Are Embeddable Tool Widgets?

Each widget is a fully working ToolNest tool (word counter, QR code generator, BMI calculator, and 30+ more) packaged as a tiny embeddable page. You add it to your site with a standard HTML iframe — the same technique YouTube uses for video embeds. Your visitors interact with the tool directly on your page; everything runs in their browser, so it's instant and private.

Why Webmasters Embed Our Tools

Keep visitors on your page longer. An interactive tool turns a quick bounce into minutes of engagement — a strong positive signal for your own SEO.
Zero development cost. No coding, no API keys, no maintenance. We host, update, and improve the tools; your embed always serves the latest version.
Free forever, even commercially. Use any widget on business sites, blogs, and client projects. The only ask is the small "Powered by ToolNest" credit link.
Fast and mobile-friendly. Widgets load after your page renders inside an isolated frame, so they never slow your site or break your layout.

How to Embed a Tool (3 Steps)

Choose a widget from the list below and click Copy embed code.
Paste the snippet into your page HTML wherever you want the tool to appear.
Adjust the size — change the width and height attributes to fit your layout (100% × 600px works for most tools).

All Embeddable Widgets

🔢 Word Counter

Count words, characters, sentences and paragraphs instantly with our free online word counter. No signup, work...

<iframe src="https://nestoftools.com/embed/word-counter/" width="100%" height="600" style="border:0" title="Word Counter by ToolNest"></iframe>

🔤 Character Counter

Free online character counter: count characters with and without spaces, plus words and lines. Instant results...

<iframe src="https://nestoftools.com/embed/character-counter/" width="100%" height="600" style="border:0" title="Character Counter by ToolNest"></iframe>

🔠 Case Converter

Free online case converter: convert text to UPPERCASE, lowercase, Title Case and Sentence case instantly. No s...

<iframe src="https://nestoftools.com/embed/case-converter/" width="100%" height="600" style="border:0" title="Case Converter by ToolNest"></iframe>

🧹 Remove Duplicate Lines

Free online tool to remove duplicate lines from text lists. Optional case-insensitive matching and sorting. No...

<iframe src="https://nestoftools.com/embed/remove-duplicate-lines/" width="100%" height="600" style="border:0" title="Remove Duplicate Lines by ToolNest"></iframe>

🧩 JSON Formatter

Free JSON formatter, validator and minifier. Beautify, validate and minify JSON instantly in your browser. No ...

<iframe src="https://nestoftools.com/embed/json-formatter/" width="100%" height="600" style="border:0" title="JSON Formatter by ToolNest"></iframe>

🔐 Base64 Encoder / Decoder

Free Base64 encoder and decoder online. Convert text to Base64 and decode Base64 back to text instantly. No si...

<iframe src="https://nestoftools.com/embed/base64-encoder/" width="100%" height="600" style="border:0" title="Base64 Encoder / Decoder by ToolNest"></iframe>

🛡️ Password Generator

Generate strong random passwords free online. Choose length, numbers and symbols. Secure, instant, no signup....

<iframe src="https://nestoftools.com/embed/password-generator/" width="100%" height="600" style="border:0" title="Password Generator by ToolNest"></iframe>

⚖️ BMI Calculator

Free BMI calculator online. Enter height and weight (metric or imperial) to get your Body Mass Index and weigh...

<iframe src="https://nestoftools.com/embed/bmi-calculator/" width="100%" height="600" style="border:0" title="BMI Calculator by ToolNest"></iframe>

📝 Lorem Ipsum Generator

Free lorem ipsum generator: create placeholder paragraphs, sentences or words for mockups and designs instantl...

<iframe src="https://nestoftools.com/embed/lorem-ipsum-generator/" width="100%" height="600" style="border:0" title="Lorem Ipsum Generator by ToolNest"></iframe>

🔗 Slug Generator

Free URL slug generator: turn any title into a clean, SEO-friendly URL slug instantly. Handles accents and sym...

<iframe src="https://nestoftools.com/embed/slug-generator/" width="100%" height="600" style="border:0" title="Slug Generator by ToolNest"></iframe>

🔑 UUID Generator

Generate free UUIDs online: v4 random and v7 time-ordered UUIDs, bulk generation up to 500, uppercase option. ...

<iframe src="https://nestoftools.com/embed/uuid-generator/" width="100%" height="600" style="border:0" title="UUID Generator by ToolNest"></iframe>

🌐 URL Encoder / Decoder

Free URL encoder/decoder: percent-encode URLs or decode %20-style strings back to readable text. Full URL and ...

<iframe src="https://nestoftools.com/embed/url-encoder-decoder/" width="100%" height="600" style="border:0" title="URL Encoder / Decoder by ToolNest"></iframe>

🎲 Random Number Generator

Free random number generator: pick random numbers between any min and max, generate lists, no repeats option. ...

<iframe src="https://nestoftools.com/embed/random-number-generator/" width="100%" height="600" style="border:0" title="Random Number Generator by ToolNest"></iframe>

🎨 Color Converter

Free color converter: HEX to RGB, RGB to HEX, HSL values, live preview, and WCAG contrast ratio checker. Insta...

<iframe src="https://nestoftools.com/embed/color-converter/" width="100%" height="600" style="border:0" title="Color Converter by ToolNest"></iframe>

📄 Markdown to HTML

Free Markdown to HTML converter: paste Markdown, get clean HTML plus a live preview. Supports headings, lists,...

<iframe src="https://nestoftools.com/embed/markdown-to-html/" width="100%" height="600" style="border:0" title="Markdown to HTML by ToolNest"></iframe>

🏷️ Meta Tag Generator

Free meta tag generator: create SEO meta tags, Open Graph and Twitter Card tags with live Google SERP preview ...

<iframe src="https://nestoftools.com/embed/meta-tag-generator/" width="100%" height="600" style="border:0" title="Meta Tag Generator by ToolNest"></iframe>

🎫 JWT Decoder

Free JWT decoder: paste a JSON Web Token to instantly read its header, payload claims, and expiry. HS256 signa...

<iframe src="https://nestoftools.com/embed/jwt-decoder/" width="100%" height="600" style="border:0" title="JWT Decoder by ToolNest"></iframe>

🪙 Coin Flip

Flip a coin online free: fair heads-or-tails results with animation, flip history, and running tally. No signu...

<iframe src="https://nestoftools.com/embed/coin-flip/" width="100%" height="600" style="border:0" title="Coin Flip by ToolNest"></iframe>

⚄ Dice Roller

Free online dice roller: roll d4, d6, d8, d10, d12, d20, d100 dice, multiple dice at once, with totals and his...

<iframe src="https://nestoftools.com/embed/dice-roller/" width="100%" height="600" style="border:0" title="Dice Roller by ToolNest"></iframe>

🔄 Reverse Text Generator

Free reverse text generator: flip text backwards, reverse word order, reverse lines, or make upside-down text ...

<iframe src="https://nestoftools.com/embed/reverse-text-generator/" width="100%" height="600" style="border:0" title="Reverse Text Generator by ToolNest"></iframe>

↕️ Sort Lines

Free online tool to sort lines alphabetically (A–Z or Z–A), numerically, with case options. Perfect for lists ...

<iframe src="https://nestoftools.com/embed/sort-lines/" width="100%" height="600" style="border:0" title="Sort Lines by ToolNest"></iframe>

📅 Days Between Dates

Free days-between-dates calculator: find the exact number of days, weeks, and months between two dates, with b...

<iframe src="https://nestoftools.com/embed/days-between-dates/" width="100%" height="600" style="border:0" title="Days Between Dates by ToolNest"></iframe>

💰 Tip Calculator

Free tip calculator: calculate tip amounts, split bills between friends, add tax. 10/15/18/20/25% quick button...

<iframe src="https://nestoftools.com/embed/tip-calculator/" width="100%" height="600" style="border:0" title="Tip Calculator by ToolNest"></iframe>

⏱️ Unix Timestamp Converter

Free Unix timestamp converter: convert epoch seconds/milliseconds to readable dates and back, with auto-detect...

<iframe src="https://nestoftools.com/embed/unix-timestamp-converter/" width="100%" height="600" style="border:0" title="Unix Timestamp Converter by ToolNest"></iframe>

💻 Text to Binary Converter

Free text to binary converter: translate text to binary code and binary back to text, UTF-8 safe. Instant, no ...

<iframe src="https://nestoftools.com/embed/text-to-binary-converter/" width="100%" height="600" style="border:0" title="Text to Binary Converter by ToolNest"></iframe>

📏 Unit Converter

Free unit converter: convert length, weight, temperature, volume, data, speed, area and time units instantly. ...

<iframe src="https://nestoftools.com/embed/unit-converter/" width="100%" height="600" style="border:0" title="Unit Converter by ToolNest"></iframe>

％ Percentage Calculator

Free percentage calculator: find X% of Y, what percent one number is of another, and percentage increase/decre...

<iframe src="https://nestoftools.com/embed/percentage-calculator/" width="100%" height="600" style="border:0" title="Percentage Calculator by ToolNest"></iframe>

🎂 Age Calculator

Free age calculator: enter your date of birth to get your exact age in years, months and days, plus total days...

<iframe src="https://nestoftools.com/embed/age-calculator/" width="100%" height="600" style="border:0" title="Age Calculator by ToolNest"></iframe>

🎯 Random Name Picker

Free random name picker: paste a list of names and draw random winners for raffles, giveaways, and classrooms....

<iframe src="https://nestoftools.com/embed/random-name-picker/" width="100%" height="600" style="border:0" title="Random Name Picker by ToolNest"></iframe>

🔢 Number Base Converter

Free number base converter: convert between binary, octal, decimal, and hexadecimal (bases 2–36). Shows all ba...

<iframe src="https://nestoftools.com/embed/number-base-converter/" width="100%" height="600" style="border:0" title="Number Base Converter by ToolNest"></iframe>

🧩 HTML Encoder / Decoder

Free HTML encoder/decoder: convert < > & " ' to HTML entities (< > &) and decode entities back. Name...

<iframe src="https://nestoftools.com/embed/html-encoder/" width="100%" height="600" style="border:0" title="HTML Encoder / Decoder by ToolNest"></iframe>

📊 Keyword Density Checker

Free keyword density checker: analyze any text for keyword frequency, density %, top words, and readability st...

<iframe src="https://nestoftools.com/embed/keyword-density-checker/" width="100%" height="600" style="border:0" title="Keyword Density Checker by ToolNest"></iframe>

◧ QR Code Generator

Free QR code generator: create QR codes for URLs, text, WiFi, and contact info. Download as PNG. Private — cod...

<iframe src="https://nestoftools.com/embed/qr-code-generator/" width="100%" height="600" style="border:0" title="QR Code Generator by ToolNest"></iframe>

🔐 Hash Generator

Free online hash generator: create MD5, SHA-1, SHA-256 and SHA-512 hashes from text or files. Instant, private...

<iframe src="https://nestoftools.com/embed/hash-generator/" width="100%" height="600" style="border:0" title="Hash Generator by ToolNest"></iframe>

🏠 Mortgage Calculator

Free mortgage calculator: estimate your monthly principal & interest payment, total interest, and a full year-...

<iframe src="https://nestoftools.com/embed/mortgage-calculator/" width="100%" height="600" style="border:0" title="Mortgage Calculator by ToolNest"></iframe>

🎓 GPA Calculator

Free GPA calculator: add your courses, grades, and credits to compute your semester GPA and cumulative GPA ins...

<iframe src="https://nestoftools.com/embed/gpa-calculator/" width="100%" height="600" style="border:0" title="GPA Calculator by ToolNest"></iframe>

🧾 Invoice Generator

Free invoice generator: build professional invoices with line items, tax and discounts, then print or download...

<iframe src="https://nestoftools.com/embed/invoice-generator/" width="100%" height="600" style="border:0" title="Invoice Generator by ToolNest"></iframe>

Frequently Asked Questions

What is an embeddable tool widget?

It's a mini version of one of our free tools that you can place on your own website with a single line of HTML (an iframe). Your visitors use the tool right on your page — no redirect, no signup.

Is it really free to embed ToolNest widgets?

Yes — free forever, for any website including commercial ones. The only requirement is keeping the small 'Powered by ToolNest' credit link, which is how we keep the tools free.

Will the widget slow down my site?

No. The widget loads inside an isolated iframe after your page renders, and the tool itself is a few dozen kilobytes of JavaScript. It won't block your content or hurt your Core Web Vitals.

Can I change the size of the embedded tool?

Yes — adjust the width and height attributes in the iframe code to fit your layout. Most tools work well at 100% width and 600px height.

Does the embedded tool work on mobile?

Yes. Every ToolNest widget is fully responsive and touch-friendly, just like the full tool pages.

Do I need an API key or account?

No. Copy the iframe snippet, paste it into your page HTML, and it works immediately — no keys, no registration, no maintenance.