Step-by-step help to make invoices, tickets, certificates, ads, and social images from one template, in our editor, with ChatGPT or Claude, or from your own code and automations. Each guide shows a real file made from a designer-made template.
Newest guidePDF
Compare the full monthly cost of Puppeteer PDF generation on your own servers with a PDF API. Use your own PDF count, your team's time, and one real invoice.
Read the guideGuides
Fill the Price quote template in the editor and download a PDF, or send an approved deal from your CRM and make the same quote from your own code.
App Store
A full set of localized App Store screenshots takes about fifteen minutes with thirds.ai. See how many users an English-only listing misses, what Apple asks you to translate, and how to make every language from one design.
Download Stripe's own receipt PDF, see how far its branding goes, and make your own branded receipt from a Stripe payment in the thirds.ai editor or from your own code.
Fill the Travel itinerary template with a guest's route, days, and stays, and download a branded PDF. Make one for every guest on a tour from a spreadsheet, or from your booking data in your own code.
Compare the main wkhtmltopdf alternatives, make one invoice PDF without code, then move your own HTML to a PDF API and check the result.
Tiktok
Make a TikTok slideshow with matching 1080 × 1920 photo slides. Keep your words clear of the controls, download the images in order, and post them in TikTok.
Tiktok
Ten TikTok slideshow ideas for marketing an app, why photo slideshows work, how often to post them, and a template for each idea.
Webhooks
Verify thirds.ai webhook signatures in Node.js or Python with HMAC-SHA256, the raw body, and a timestamp check.
Copy the Event ticket design, type each guest's name and seat, and download a print-ready PDF with its own QR code. Make tickets for a whole guest list from a CSV, or from your own code.
Set up a weekly flow in Power Automate or Make that sends your numbers to a saved thirds.ai report design and creates a branded PDF or image every time.
Images
Drop your SVG on a free converter, type the size you need, and download a sharp PNG with a clear background. The file stays on your computer.
Pick one of five UK business card templates, type your name and contact lines, and download an 85 by 55 millimetre PDF. Then make a card for each teammate from one CSV file.
Add an HTML page break with print CSS, keep blocks whole, and fix breaks that don't work. Give headers their own styles and use fonts the renderer can load.
Upload your class list as a CSV and download a ZIP with a branded PDF certificate for each learner, or send each learner's details from your own code.
Build a branded template from a designer-made gallery design or with AI, then let your AI assistant or your own code make every invoice, report, or social image after that. See what goes in one, four ways to make it, and how to fill it for one file or a whole spreadsheet.
Brand kits
Learn what goes in a brand kit, why it pays off, and how to create one for free in thirds.ai from your website, by hand, or from ChatGPT or Claude. Then use your colours, logo, and fonts on every PDF and image you make.
Send your invoice JSON from Node.js to a thirds.ai design and get back a finished, branded PDF, with no layout code and no renderer to run yourself. Check the file before you send it, or make the same invoice in the editor with no code.
Send each client's invoice details to a designer-made thirds.ai template and get back a branded PDF, from the editor, a spreadsheet, or your own code, with no layout work on your side each time.
Images
Copy one square ad design and make a variation for each headline, offer, or product photo you want to test. Use the editor or your own code, then add story and banner sizes.
Open Graph
The Open Graph image size to use is 1200 × 630 pixels at 1.91 to 1. See the size for each platform, where to keep your text, the tags you need, and how to make a card for every page.
Images
Make a 1200 × 630 link-preview image from one HTML design, in the editor or from your own code, then send each page's title to get its own card.
Images
Turn HTML into a PNG, WebP, or JPEG from Python with one request, or make the same image in the thirds.ai editor without code.
Image import
Upload one design you own and get an editable template with your logo, colours, and fonts. Then fix the draft and fill it with new words and photos for each campaign.
Static ads
Choose a static ad layout for a product, offer, event, or review, with the size of each one and what makes it work. Copy any of the 15 templates, or ask ChatGPT or Claude to fill one with your brand.
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Start from a template our designers made, and put your logo, colours, and fonts on it in one step with a brand kit. Then connect ChatGPT or Claude and ask it for each new file. It’s free to start.
