Beautiful, on-brand images and PDFs from templates you set up once

thirds.ai · 2026-10-04 · by Long Nguyen ·generic
Create branded images and PDFs for your campaigns and clients. Automate each new version through our API or your AI tools.

Beautiful, on-brand images and PDFs from templates you set up once

On-brand images and PDFs

Beautiful, on-brand images and PDFs from templates you set up once

Start from a designer-made template, or ask ChatGPT or Claude for one, and add your logo and colours. From then on, you or your AI assistant make as many new files from it as you need, each one finished and in your brand.

Create your first designExplore templates

Free to start. No card needed.

Your brand

Your website

Show my brand

or

ThirdsPlumEmber

A tall drop story for Faircloth Knitwear, with a huge cream headline, a round photo of a woman on a rust gradient cut by dark stripes, and a hanging swing tag that says New, 14 pieces.

HTML

Image · 1080 × 1920Ready to download

1. 01Pick a template you like 2. 02Add your logo and colours 3. 03Make a new file whenever you need one

Works with

  • Claude
  • Cursor
  • ChatGPT
  • Gemini CLI
  • Grok
  • Codex
  • Hermes
  • VS Code
  • Zed
  • Warp
  • Node
  • Python
  • n8n
  • REST

    • Trusted by 140+ teams that ship branded files every week

  • Ember Coffee
  • Fieldnote Labs
  • Harbour Print
  • Kestrel Events
  • Lumen Skincare
  • Marlow & Co
  • Meridian Agency
  • Orbit Media
  • Signal Studio
  • Keystone Coaching

    • Today

    1. Update the price list 2. Report for Harbour Bistro 3. New sizes for the sale post 4. Invoice with the new logo 5. One more ad to test 6. Menu for the weekend

    InvoiceWrong logo

    Built by hand, one at a time

    Each file built by hand can slip to an old logo or a wrong price.

    With thirds.ai

  • Salesquote-harbour.pdf
  • Operationsinvoice-1042.pdf
  • Marketingsale-post.png
  • Your appreport-kestrel.pdf

    • Every quote, invoice, and post comes from one finished design, so they all match.

    Watch · 0:53Play

    Read the transcript

    You're drowning in design requests, and there's no time to do them all. So the spring flyer waits, and Tuesday's quote never goes out. Then your biggest client gets a report with the old logo, and you look unprofessional.

    So you start from a designer-made template, in your own logo, colours, and fonts. Your first one's ready to send in under five minutes. After that, anyone on your team can make the next flyer from the same design.

    Got a spreadsheet of leads? Every one gets a quote with their name on it. Your app can make the invoice the moment a job's done. And your AI agent makes ten ads to test, each with the right logo.

    Create your first design, free, at thirds.ai!

    Smart resize

    Smart resizeVisual editorAI chatImage to designBrand kitsFrom your appSpreadsheet

    Larkspur

    Summer sale30% off everything

    Original

    Larkspur

    Summer sale30% off everything

    Story

    Larkspur

    Summer sale30% off everything

    Wide banner

    Larkspur

    Summer sale30% off everything

    Portrait

    Larkspur

    Summer sale30% off everything

    Square

    Larkspur

    Summer sale30% off everything

    Thumbnail

  • Story
  • Wide banner
  • Portrait
  • Square
  • Thumbnail

    • 01/ 07

    Smart resize

    Pick the sizes you need, and one design fits each of them, from a story to a wide banner.

    See the editor

    02/ 07

    Visual editor

    Mark the name and the price that change from file to file, then move or restyle the rest until it's yours.

    See the editor

    03/ 07

    AI chat

    Describe the design you want, and the AI chat builds it in your colours, ready to use.

    See the AI chat

    04/ 07

    Image to design

    Upload a picture you like, and get it back as a design of your own, in your logo and colours.

    See image to design

    05/ 07

    Brand kits

    Save your logo, colours, and fonts, and every design takes them. Keep a kit for each client, and the same design comes out in their brand.

    See brand kits

    06/ 07

    From your app

    Your app sends the client's name and total, and gets the finished PDF back.

    Read the quickstart

    07/ 07

    Spreadsheet

    Make a whole batch at once from a spreadsheet, one file for each row.

    How batches work

  • Pick a designer-made templateStart from an invoice, a menu, or a social post in the gallery.
  • Describe it to the AI chatSay what you need, and the chat drafts it for you.
  • Paste your own HTMLBring a layout you already made, and keep working on it here.
  • Upload a pictureTurn a picture you like into a design you can change.

    • A video thumbnail with a big white title, a lime highlight bar for the key line, a creator on a halftone dot field, an episode tab, and a run time.

    Episode Title Photo _Channel_HTML

    Your brand kitAa

    Add your brand to this ad, then change the headline or the price and download it.

    Colours, fonts, and logo

    Yours

    Your brand

    Standard

    OriginalThirds

    Themes

    InkForestPlumEmber

    Put your brand on every design

    Change the sample file

    Content

    New launchWeekend offerGift set

    Headline

    Product

    Claim

    Price

    Download freeEdit in the editor

    A square skincare launch ad for Aurelle Skin, with a big italic headline, a woman in a plum and gold gradient circle, a gold price starburst, and three benefit pills.

    Skincare serum launchPNG · 1080 × 1080HTML

    invoices.csv

    | Client | Invoice | Total | | -------------- | -------- | ------ | | Harbour Bistro | INV-1042 | $1,240 | | Kestrel Events | INV-1043 | $860 | | Lumen Skincare | INV-1044 | $2,310 | | Orbit Media | INV-1045 | $495 | | Marlow & Co | INV-1046 | $4,860 | | Signal Studio | INV-1047 | $1,720 |

    Invoice

    Ashby Design Co_Client_Signal Studio_Invoice_INV-1047_Total_$1,720

    1. Harbour Bistro$1,240 2. Kestrel Events$860 3. Lumen Skincare$2,310 4. Orbit Media$495 5. Marlow & Co$4,860 6. Signal Studio$1,720

    6PDFs made

    invoices.zip

    These designs come from the gallery. Click one to see three finished versions side by side.

  • A magazine-style invoice with a dark side panel, a halftone block with the pay-by date, and the total due in large serif type.The Design studio invoice design made for a second business, with its own details and brand.The Design studio invoice design made for a third business, with its own details and brand.
    • Design studio invoicePDF · A43 versions
  • A square sale sticker for Tolley & Sons, with a pink starburst on yellow sun rays, a dark centre disc that says -40% off everything, and a white code ticket for SUN40.The Weekend sale sticker design made for a second business, with its own details and brand.The Weekend sale sticker design made for a third business, with its own details and brand.
    • Weekend sale stickerImage · 1080 × 10803 versions
  • A landscape workshop certificate with the recipient's name, the course in gold, a large 2026 class year, and a signature on a navy band.The Course completion certificate design made for a second business, with its own details and brand.The Course completion certificate design made for a third business, with its own details and brand.
    • Course completion certificatePDF · A4 landscape3 versions
  • A coffee bag label for Larchwood Roasters, with a green contour map panel that marks the peak, a big Yirgacheffe title, three coffee facts, and a green band with the 250 g weight.The Coffee bag label design made for a second business, with its own details and brand.The Coffee bag label design made for a third business, with its own details and brand.
    • Coffee bag labelImage · 1200 × 16003 versions
  • An article card for The Slow Kitchen, with a big serif title on warm paper, a dark Guides starburst, and her round photo on a burnt orange panel.The Article share card design made for a second business, with its own details and brand.The Article share card design made for a third business, with its own details and brand.
    • Article share cardImage · 1200 × 6303 versions
  • A cream A4 menu for Otterley's under a terracotta and cream striped awning, a small olive sign reading Est. 2019 that hangs from the awning, eight dishes with dotted leaders and prices, and an olive chef's note panel with the address and phone number.The Bistro evening menu design made for a second business, with its own details and brand.The Bistro evening menu design made for a third business, with its own details and brand.
    • Bistro evening menuPDF · A43 versions
  • A KPI report for Tidewater Supply Co. with monthly revenue, a rising area chart, three headline numbers, and a table of sales by channel.The Monthly KPI report design made for a second business, with its own details and brand.The Monthly KPI report design made for a third business, with its own details and brand.
    • Monthly KPI reportPDF · A43 versions
  • A tall orange gig poster with glowing sound rings, a cream star that shows 24 Oct, a huge band name, and the doors, tickets, and address.The Live music gig poster design made for a second business, with its own details and brand.The Live music gig poster design made for a third business, with its own details and brand.
    • Live music gig posterImage · 1080 × 13503 versions
  • A LinkedIn banner for a business coach, with a bold headline that underlines the word lasts, three stats, a gold Book a free call button, and her round photo in a sky blue and gold ring.The Business coach banner design made for a second business, with its own details and brand.The Business coach banner design made for a third business, with its own details and brand.
    • Business coach bannerImage · 1584 × 3963 versions
  • A square mixtape cover on dark purple with a glowing pink vinyl record, a huge number 07, the mix title on the label, and the track count and length.The Mixtape cover design made for a second business, with its own details and brand.The Mixtape cover design made for a third business, with its own details and brand.
    • Mixtape coverImage · 1080 × 10803 versions

    01 / 10

    Your AI assistant

    Make the passes for Friday, Saturday, and Sunday.

    `thirds · create_pdf`× 3

    1. A festival day pass with the headliner in large white type on a night sky, a pink day starburst, and a yellow side stub with the gate and a QR code. 2. The Festival day pass design made for a second business, with its own details and brand. 3. The Festival day pass design made for a third business, with its own details and brand.

    Your three passes are ready to download.

    HTML

    REST APIMCP server

    curl --fail-with-body --silent --show-error \
  https://thirds.ai/v1/pdf \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: invoice-2026-1042" \
  --data '{
    "template_id": "editorial-invoice",
    "data": {"client": "Marlow & Co", "total": 4860}
  }'
    {
  "servers": {
    "thirds": {
      "type": "http",
      "url": "https://thirds.ai/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

    Set up ChatGPTSet up ClaudeSet up GeminiSet up GrokAny other AIRead the quickstart

    Connects to the tools you already use

  • Claude
  • Cursor
  • ChatGPT
  • Gemini CLI
  • Grok
  • Codex
  • VS Code
  • Zed
  • Warp
  • Node
  • Python
  • n8n

    • “Social images

    Our sale posts used to take a whole morning. Now I ask Claude for the post and it's done before my coffee is, and it still looks like us.

    Maya Singh, Head of Marketing, Lumen Skincare

    “PDF automation

    Our bookkeeping tool hands over each new invoice, and it comes back as a finished PDF in our design. I haven't laid one out by hand since.

    Theo Hale, Founder, Marlow & Co

    “AI assistants

    I asked Claude to make the festival passes for Saturday and it just did it, with the QR codes and the right gate on every ticket.

    Priya Nair, Operations Lead, Kestrel Events

    “Ad testing

    We test ten ad versions a week now. I ask ChatGPT for the headlines, it fills our saved design, and every version has the right logo.

    Tom Okafor, Growth, Orbit Media

    “Restaurants

    Our menu changes twice a week. The chef updates the prices, and we print the A4 PDF at the front of house in the same fonts every time.

    Elena Marsh, Owner, Harbour Bistro

    “Agencies

    We keep one report layout and a brand kit for each client. Every monthly report goes out in the client's own logo and colours, and nobody rebuilds it.

    Daniel Reyes, Partner, Meridian Agency

    Maya SinghHead of Marketing, Lumen SkincareTHTheo HaleFounder, Marlow & CoPriya NairOperations Lead, Kestrel EventsTOTom OkaforGrowth, Orbit MediaElena MarshOwner, Harbour BistroDaniel ReyesPartner, Meridian Agency

  • ### Marketing teams
    • Make your posts and ad versions in your brand, as many as you need.

    * Static ads * Social media images * Link preview images

  • ### Agencies
    • Send each client a report and an invoice in their own brand, from one layout.

    * Reports * Branded invoices

  • \-30%

    • Small businesses

    Send quotes, receipts, and menus that look like a designer made them.

    * Quotes and receipts * Free invoice generator * Browse the gallery

  • POST /v1/pdf
    • 200 OK PDF

    AI assistants and developers

    Ask your AI assistant for a file, or make one from your own code.

    * Quickstart * MCP server

    How many files do you make each month?

    2,500 files a month

    1. Free 2. Starter 3. Growth 4. Scale

    Your plan

    Starter

    $290 about $24 a month

    See the Starter plan

    Pay yearly2 months freePay monthly

    Try Starter for $1. Your first week comes with 500 credits, and you can use them for AI too.

  • ### Free
    • Make up to 50 PDFs or images every month, or use your credits to build a design with AI.

    $0no card needed free all year

    $0no card needed free all year Make a sample image

    * 50 credits every month * Use free credits for AI too * 1 brand kit * Make up to 10 files at once from a CSV * Files saved for 30 days

  • ### Starter
    • You make images and client documents most weeks and want a steady monthly allowance.

    $290per year about $24 a month Save $58 a year

    $29per month or $290 a year Save $58 a year Try it for $1 You pay $1 today for 7 days. After that it's $290 a year unless you cancel.

    * 2,500 credits every month * That's about 80 PDFs or images a day * 1 brand kit * Make up to 50 files at once from a CSV * Files saved for up to 1 year * Packs, or up to 2,500 extra credits on your bill * About $11.60 for every 1,000 files * Unused credits last 3 months

  • Most popular

    • Growth

    You make campaign images and client documents every day and want room to grow.

    $790per year about $66 a month Save $158 a year

    $79per month or $790 a year Save $158 a year Get Growth

    * 10,000 credits every month * That's about 330 PDFs or images a day * 5 brand kits * Make up to 100 files at once from a CSV * Files saved for up to 1 year * Packs, or up to 10,000 extra credits on your bill * About $7.90 for every 1,000 files * Your files go ahead of Starter and Free * Unused credits last 3 months

  • Priority rendering

Scale

You make thousands of images and PDFs a month and want your work first in line.

$1,990per year about $166 a month Save $398 a year

$199per month or $1,990 a year Save $398 a year Get Scale

* 40,000 credits every month * That's about 1,300 PDFs or images a day * 20 brand kits * Make up to 200 files at once from a CSV * Files saved for up to 1 year * Packs, or up to 40,000 extra credits on your bill * About $4.98 for every 1,000 files * Your files go first in line * Unused credits last 3 months

The $1 week is for Starter only, once per account, and you add a card to start it. Your 500 trial credits end with the trial, and you can't add extra credits to your bill during it.

When we're busy, we make Scale files first, then Growth, Starter, credit packs, and Free.

The number of files a day on each card assumes one credit for each file. AI work uses more credits.

See all plans

Questions people ask before they start

Create your first design

What is PDF automation?

PDF automation means you make the same kind of PDF again and again without building each one by hand. In thirds.ai you save a design once. Then you fill in the new name and price, or your AI assistant or your own code does, and you get a finished PDF or image each time.

Can I try thirds.ai without an account?

Yes. Change the words on the sample ad on this page and download it, or open the playground to try more designs.

Is thirds.ai free?

Yes, to start. The Free plan gives you 50 credits every month, and you can spend them on the AI chat too. Pick a paid plan when you need more.

Is thirds.ai an AI image generator?

No. An image generator draws a new picture each time, so fonts and colours drift and words come out wrong. thirds.ai fills a design that you can edit, with layers like a design file, so every file looks like your brand and the words come out right. The editor can also make a picture to place inside a design.

What can I change in a template?

Everything on it, from the words and pictures to the colours and layout. Once it's saved, every new file keeps that look.

Can ChatGPT or Claude make files from my design?

Yes. Connect ChatGPT, Claude, Cursor, or another AI tool through the MCP server, and ask for files in plain words. From your own code, call the REST API in any language.

How much does a finished file cost?

Each finished PDF or image costs 1 credit. If a file fails on our side, you don't pay for it.

On-brand images and PDFs

Make your first on-brand file today

Your first file is a few minutes away, and every one after it keeps the same look.

Create your first designExplore templates

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