thirds.ai
Sign inCreate a template
Menu

Branded PDFs and images from one template

Start with words, your own HTML, or a picture of a design you like. thirds.ai turns it into an editable template in your brand, then makes PDFs and PNG, JPEG, or WebP images from it.

Start freeSee plans and pricing
  • No card needed
  • 25 free credits every month
  • Every feature included
  • Your words, HTML, or image
  • Your brand
  • Your PDF or image

Invoices, reports, certificates, and images

Real files, made here.

Every file comes out sharp and on brand, so you can send it to a customer as it is, and that is true for one invoice or a thousand.

  • invoice-1042.pdf2 pages

    Ready to send

  • q1-report.pdf6 pages

  • certificate-sam-lee.pdf1 page

  • Text and logos stay sharp
  • The same design on every file
  • Your own fonts and colours
  • Ready to send straight away

One template, many files

Change the words, keep the design.

Each picture is one export from the product spotlight template, made through the API. Pick a tab to see the data that changed.

A square dark green product spotlight image that says One clear report, every detail in placeHTML
Headline
One clear report. Every detail in place.
Caption
Ready to share. Easy to update.
Colour
#214b37

How it works

Three steps to a finished file.

  1. The editor's source dialog with pasted HTML ready to become a template

    Start with what you have

    Type what you need, paste your HTML, or upload a picture of a design you like.

  2. A built square template open in the editor with the brand colours and fonts in place

    We build the template

    It comes back editable, with your logo, colours, and fonts already in place.

  3. The Renders list with four finished image files ready to download

    Make the files

    Export a PDF or a PNG, JPEG, or WebP image, then send it to people.

Stay on brand

Every file looks like you.

Save your logo, colours, fonts, and layout one time. After that, every document you make matches without any extra work. Pick a colour and watch the whole set follow.

Pick a colour

Work once

Build the design once, then use it for every file.

Save a template, add the new details, and every PDF or image comes back matching. Update the template one time and every new file follows along.

  • Invoice #1042March
  • Invoice #1043April
  • ReportQ1 results
  • Launch post1080 × 1080

Use it your way

It works however you like to work.

Make PDFs and images by hand in the browser, from your code with one API call, or hands-free through your AI tools.

  • In the browser

    Make one right on the site.

    Describe it, paste your HTML, or upload a picture, look at the preview, and export the PDF or image. There is nothing to install.

  • From your code

    Add PDFs and images to your app.

    Send your HTML or template data from your app and download the finished PDF or image a moment later.

  • Through your agent

    Let your AI tools handle it.

    Connect our MCP server and your AI tools can make and fix PDFs and images for you.

Create it, then download it
job=$(curl -sS https://thirds.ai/v1/pdf \
  -H "Authorization: Bearer $THIRDS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "html": "<h1>Invoice 1042</h1>" }')
id=$(printf '%s' "$job" | jq -r .id)
while [ "$(printf '%s' "$job" | jq -r .download.url)" = null ]; do
  sleep 1
  job=$(curl -sS "https://thirds.ai/v1/pdf/$id" \
    -H "Authorization: Bearer $THIRDS_API_KEY")
done
url=$(printf '%s' "$job" | jq -r .download.url)
curl -sS "https://thirds.ai$url" -o invoice.pdf
Start free

Simple pricing

Start free, upgrade when you are busy.

The free plan gives you 25 credits every month, and paid plans start at $29. You can cap your spending, so there are no surprises.

Start freeSee the plans

Free plan

$0 a month

  • 25 credits every month
  • No card needed
  • Every feature included