Bannerbear charges $49/month — $588 a year — to render social cards from templates. Cardsmith is the same idea on your own hardware: design a template in the visual editor, type {{title}} in a text layer, and it instantly becomes a REST endpoint that returns a PNG. Unlimited renders, no rate limits, no meter.
If you've searched for a Bannerbear alternative, Cardsmith is the pay-once option worth putting at the top of the list: Cardsmith is $39, one time, and covers the same core job Bannerbear charges $49/mo for.
What makes Cardsmith the pick for 2026
- Visual template editor — Canvas with drag positioning + snap guides, layers panel, and a live preview that matches server output pixel-for-pixel.
- Layer types — Text (bundled fonts, weight, align, wrap, auto-shrink to fit), images (upload or URL, cover/contain/fill, radius, opacity), shapes and solid/gradient/image backgrounds.
- Sizes for every network — OG/blog 1200×630, X large card 1600×900, Instagram 1080×1080 and 1080×1920 story, LinkedIn 1200×627 — plus fully custom dimensions.
- {{variables}} — Type {{title}} in any text layer (or image URL) and the template instantly becomes an API endpoint with that parameter.
- Render API — GET /api/render/:templateId?title=...&key=... returns a PNG — deterministic, server-side, bundled Chromium. Point your og:image meta tag straight at it.
Cardsmith vs Bannerbear, at a glance
| Cardsmith | Bannerbear | |
|---|---|---|
| Price | $39 once (or free, MIT) | $49/month ($588/yr) |
| API renders | Unlimited | 1,000/mo on Starter |
| Templates | Unlimited | 10 on Starter |
| Data location | Your machine / your VPS | Their cloud |
| Rate limits | None | Yes |
| Works offline | Yes | No |
| Source code | MIT, yours | Closed |
Cardsmith costs less than a single month of Bannerbear — it pays for itself in 24 days.
Common questions
Is it really free on GitHub?
Yes — MIT source at github.com/bensblueprints/og-image-studio-mvp. $39 buys the packaged installer with everything pre-wired, plus updates.
How are images rendered?
Server-side with bundled Chromium (Puppeteer), using the exact same HTML renderer as the editor preview — so WYSIWYG is literal. Fonts are bundled and base64-embedded, making output deterministic and fully offline.
Are renders really unlimited?
Yes — your CPU does the work, so there's no render meter and no rate limit. Bannerbear's Starter tier caps you at 1,000 renders and 10 templates a month.
The bottom line
Cardsmith won't out-feature Bannerbear on every axis — no subscription tool with a bigger team and a bigger roadmap loses on everything. But for the core job, $39 once against $49/mo forever is a trade most people should at least look at. Cardsmith is part of OneTimeSuite, a catalog of pay-once apps that replace subscription SaaS.
Try Cardsmith — $39, once
Visual OG-image templates that become render APIs — unlimited PNGs, bulk CSV, self-hosted.