For website owners
Embed free tools on your website
Put any of our 113 calculators, converters, PDF and image tools on your own pages with one copy-paste snippet. No account, no API key, no cost.
One snippet
An iframe plus a one-line credit. Paste it into any HTML, WordPress, Wix, Squarespace, Webflow or Notion page.
Private by design
The tool runs in your visitor's browser. Nothing is uploaded, no cookies are set, and we never see your traffic.
Always up to date
Fixes and improvements reach your embed automatically; there is nothing to update on your side.
How it works
- Open the tool you want on AllDayToolkit and scroll to “Embed this tool on your website”.
- Click “Copy embed code”. The snippet is an
<iframe>that loads a clean, header-free version of the tool, plus a one-line “Powered by” credit that links to the tool page. - Paste it where you want the tool to appear — a Custom HTML block in WordPress, a Code block in Squarespace, an Embed block in Webflow, or straight into your HTML.
- Adjust the
heightattribute if your theme needs more or less room; the width is responsive.
Here is the snippet for the Age Calculator, exactly as it appears on its page:
Who embeds these tools
Schools and tutors
A BMI, percentage or scientific calculator inside a lesson page, so students stay on the page instead of searching for one.
Finance and real-estate blogs
Loan, mortgage, compound-interest, VAT and sales-tax calculators next to the article that explains them.
Developer documentation
JSON formatter, Base64, URL encoder, JWT decoder, regex tester and timestamp converter embedded in a docs page.
Photography and design sites
Image compressor, resizer, aspect-ratio calculator and format converters for readers who need to prepare files.
HR and career pages
Resume builder, cover-letter generator and hours calculator for applicants and employees.
Travel and expat communities
Time-zone converter, currency converter and the unit converters readers ask for every week.
Most embedded tools
Open any tool to find its snippet. Every one of the 113 tools can be embedded.
Image Compressor
Image Tools
Compress JPG, PNG and WebP images in your browser.
Open toolMerge PDF
PDF Tools
Combine multiple PDF files into one — in your browser.
Open toolWord Counter
Text Tools
Count words, sentences, paragraphs and reading time.
Open toolAge Calculator
Calculators
Calculate your exact age in years, months and days.
Open toolPassword Generator
Generators
Create strong, random passwords instantly.
Open toolQR Code Generator
Generators
Turn any text or URL into a downloadable QR code.
Open toolBMI Calculator
Calculators
Calculate your Body Mass Index in metric or imperial.
Open toolPercentage Calculator
Calculators
Work out percentages, increases and decreases.
Open toolPDF to Word
PDF Tools
Convert a PDF into an editable Word document.
Open toolHEIC to JPG Converter
Image Tools
Convert iPhone HEIC photos to JPG.
Open toolBackground Remover
Image Tools
Remove the background from an image automatically.
Open toolJSON Formatter
Developer Tools
Format, validate and minify JSON instantly.
Open toolTerms, in plain words
- You may embed any tool on any site, including commercial sites, for free.
- Keep the “Powered by” credit visible next to the frame — it is how the project is sustained.
- Do not present the tool as your own product or charge specifically for access to it.
- Tools are provided as-is; results are estimates for everyday use, not professional advice (see the terms).
- We may change or retire a tool; the embed will then show a notice instead of breaking your page.
Frequently asked questions
Is it really free, and do I need an account or API key?
Yes, free, and no. Copy the snippet from any tool page and paste it into your site. There is nothing to register and no usage limit; the tool runs in your visitors' browsers, not on your server.
Does the embed slow my page down?
The iframe loads lazily (it only fetches once it scrolls into view) and the tool page it loads is a small static page served from a CDN. It does not add scripts to your own page.
What happens to my visitors' data?
The same as on our site: calculators, converters, text, image and PDF tools process everything inside the visitor's browser and upload nothing. The embed sets no cookies and we do not see which site it is embedded on.
Can I remove the 'Powered by' link?
Please keep it. The tools are free because sites that use them link back to the original page; the link is a small text line under the frame and you can style it to match your site.
Which platforms does it work on?
Anything that lets you paste HTML: WordPress (Custom HTML block), Wix, Squarespace (Code block), Shopify pages, Webflow, Notion (Embed block, paste the iframe URL), Google Sites, Blogger, Ghost, Substack-style pages and plain HTML.