Before you read on

APITemplate.io handles documents as well as images: PDFs from HTML templates sit in the same plan, and Zapier, Make, n8n and Airtable work on every plan, the free one included. Teams come with Standard, your own S3 bucket with Enterprise. If invoices, certificates or reports are half of what you generate, it covers both — we only make one-page PDFs.

The differences, plainly

What	APITemplate.io	Shareglint
Entry plan	Starter: $35 ($29 billed yearly) for 1,500	Starter: $9 for 2,000 renders
About 10,000 a month	Standard: $89 ($69 billed yearly) for 9,000	Pro: $29 for 10,000 renders
Free tier	50 images or PDFs a month, 3 templates, no card; watermark not stated	100 renders a month, watermarked; every built-in template
Over the quota	Pay-as-you-go only on enterprise plans, by email	A pack of 1,000 renders for $8, valid 12 months
Image templates	Drag and drop; HTML is offered for PDFs	HTML and CSS or our visual editor, for images and PDFs alike
PDF documents	Yes — half of the product	One page the size of the template; no multi-page documents
No-code integrations	Zapier, Make, n8n and Airtable on every plan	None published yet: REST API and an MCP server
Your own S3 bucket	Enterprise	Not offered
One design in every social size	Not stated	6 sizes (og 1200×630, square 1080×1080, portrait 1080×1350, story 1080×1920, pinterest 1000×1500, youtube 1280×720) from one request

APITemplate.io pricing ($35 / mo, 1,500 images or PDFs, 50 free a month) comes from their own public page, checked 2026-11. If something has changed — tell us and we will fix it.

Which one to pick

Take APITemplate.io

You generate PDF documents such as invoices or certificates alongside images, or you build automations in Zapier, Make or Airtable.

Take Shareglint

Your output is social and OG images, you want to write image templates in HTML and CSS too, and you would rather pay a lower rate per render.

What migrating looks like

You rewrite the template once, as HTML and CSS. Preview costs no quota, so getting the layout right is free. Then you swap a single call on your side.

curl -X POST "https://shareglint.com/v1/images?wait=true" \
  -H "Authorization: Bearer sk_live_..." \
  -H "Content-Type: application/json" \
  -d '{"template":"blog-og","modifications":{"title":"...","author":"..."}}'

Other comparisons

Bannerbear · Placid · HTMLCSStoImage · Orshot · @vercel/og · Cloudinary · ScreenshotOne · Urlbox · ApiFlash · Templated · RenderForm · Imejis.io · Abyssale · html2canvas · Puppeteer

Read the docs Check your OG image

Shareglint as an alternative to APITemplate.io