HTML to Image renders 1,000 images for $9 against DynaPictures's 250 for $29, and adds raw HTML rendering and URL screenshots on the same key.
Disclosure: we built HTML to Image. We've kept this comparison honest because the alternative is search results full of low-effort listicles.
| Feature | DynaPictures | HTML to Image |
|---|---|---|
| Entry plan price | From $29 / 250 images (Lite) | $9 / 1,000 credits |
| Free tier | 30 API credits trial, no card | 25 images per month, no card |
| Named templates | Yes (editor, unlimited) | 25 |
| Raw HTML support | No | Yes |
| URL screenshots | No | Yes |
| JavaScript execution | No | Yes |
| Webhook delivery | Yes | Yes |
| Custom fonts | Yes (1,000+ Google Fonts) | Yes |
| Per-seat charges | 1 user on Lite | No |
| Best for | marketers personalising banners from editor templates and spreadsheets | developers rendering their own HTML with templates on the same key |
Stay with DynaPictures when non-technical colleagues generate the images. Its editor, spreadsheet imports, online forms and Zapier-style integrations are built so a marketer can produce hundreds of personalised banners without a developer, with design conveniences like face detection and text auto-resizing along the way. If that describes your team, the workflow is the value.
Switch to HTML to Image when a developer is in the loop and volume matters. The per-image economics are stark: $29 buys 250 images on DynaPictures Lite and $9 buys 1,000 here. Standard shapes come from the 25 named templates, anything bespoke is raw HTML rendered in real Chrome, and URL screenshots — which DynaPictures does not offer — are on the same key.
Roughly a tenth of the per-image cost. $9 for 1,000 renders against about $29 for 250 on Lite. At developer-driven volume that difference funds the rest of your stack — see pricing for the full ladder, and the free tier renews at 25 images every month rather than a one-time 30-credit trial.
Raw HTML and JavaScript in real Chrome. DynaPictures customises editor templates through parameters; it cannot render your markup. Our HTML endpoint takes whatever your app generates — charts, web fonts, dynamic layouts — plus 25 named templates when you would rather skip the markup.
URL screenshots included. Page captures for emails, dashboards or archives sit on the same key and credit pool. DynaPictures has no screenshot capability, so that job otherwise means a second vendor.
No-code generation paths. Spreadsheet imports, Google Sheets and Airtable connections, online forms and widget embeds let non-developers run bulk jobs end to end. HTML to Image assumes someone can call an HTTP endpoint.
In-editor design automation. Face detection, smart cropping and text auto-resizing are handled inside its templates. The CSS equivalents exist on our side but you write them yourself.
# DynaPictures (template render)
curl -X POST https://api.dynapictures.com/designs/your-design-id \
-H 'Authorization: Bearer your-api-key' \
-H 'Content-Type: application/json' \
-d '{"params":[{"name":"text1","text":"Hello"}]}'# HTML to Image (template render)
curl -X POST https://app.html2img.com/api/v1/templates/open-graph-image \
-H 'X-API-Key: your-key-here' \
-H 'Content-Type: application/json' \
-d '{"title":"Hello","subtitle":"From Northwind Studio"}'
Three concrete differences. Templates are selected by URL slug (/templates/{slug}) instead of a design ID in the path. Inputs are flat named JSON keys rather than a params array of name and property objects. Auth uses an X-API-Key header instead of a Bearer token. Confirm the designs you need exist in the templates gallery, or plan to rebuild them as HTML.
See the API parameters reference for the full request and response shape.
There is no crossover: HTML to Image is cheaper per image at every tier we can compare. The entry gap is $9 for 1,000 against about $29 for 250, and DynaPictures' higher Pro tiers price per image well above our ladder at equivalent volumes. What you are paying for at DynaPictures is the no-code workflow and design automation, not the renders. If nobody on the team needs the editor, the premium buys nothing.
Large at every published tier. DynaPictures' Lite plan starts around $29 a month for 250 images — about $116 per thousand. HTML to Image is $9 for 1,000. Even accounting for DynaPictures' unlimited templates and design features, an image-heavy workload pays roughly ten times more per render there. If your volume is a few hundred personalised banners a month designed by marketers, that premium may be fine; at developer-driven volume it adds up quickly.
Not as a built-in feature. DynaPictures generates image batches from CSVs, Google Sheets, online forms and URL parameters, which suits non-technical bulk jobs. HTML to Image is an API: batch generation is a loop in your code or an automation platform calling the endpoint. Developers rarely miss the spreadsheet layer; marketers without an engineer might.
No. DynaPictures renders templates built in its editor, customised via API parameters. There is no raw HTML endpoint and no URL screenshots. HTML to Image accepts arbitrary markup with full CSS and JavaScript execution in headless Chrome, has 25 pre-built named templates, and captures URL screenshots on the same key.
Those are genuine editor features we do not replicate — smart cropping, face detection and text auto-resizing happen inside DynaPictures templates. The HTML-first equivalent is CSS: object-fit for cropping, clamp() and container queries for text sizing. It is a different way of working rather than a missing capability, but if you specifically want automatic face-aware cropping, DynaPictures has it and we do not.
The free tier covers 25 renders a month with no credit card. Try the API against your real data before deciding.
Twenty-five pre-built designs on every plan, rendered from JSON. No editor required, no per-image premium.