v2 · now with SVG output

Chart images,
rendered at the edge.

POST a Chart.js config. Get a cached PNG or SVG back in milliseconds. No headless browser, no servers, no SDK.

Start rendering Try the playground

500 free renders No credit card < 50ms p50 cached

api.chartly.dev/v1/chart

200 OKimage/pngcache: HIT · 11ms

Live playground

Edit the config. See the image.

chart.json

×Provisioning trial key…

Rendering at the edge…

Equivalent request

curl https://api.chartly.dev/v1/chart \
  -H "X-Api-Key: ck_live_…" \
  -H "Content-Type: application/json" \
  -d @chart.json -o chart.png

What you get

Built for embedding charts in places browsers can't reach.

< 50msp50 cached

Edge-cached responses

Identical configs hash to the same URL and return from cache in under 50ms p50, served from 300+ Cloudflare locations.

100%Chart.js parity

Chart.js, fully supported

Every Chart.js 4.x type works as-is — bar, line, pie, scatter, radar, polar. Bring your existing config, no translation.

3output formats

PNG, SVG, signed URLs

Render to raster or vector. Signed URLs let you embed charts in emails, PDFs, and Slack without exposing your key.

Pricing

Pay for what you render.

Cached renders are free, every time. Top-up packs never expire.

Free

£0Trial

500 charts total

Start free

Starter

£7/mo

10K charts/mo

Choose Starter

Popular

Growth

£30/mo

100K charts/mo

Choose Growth

Max

£150/mo

1M charts/mo

Choose Max

Render to PNG

Render to SVG

Edge cache

API keys

Signed URLs

—

Custom dimensions

Analytics retention

7 days

30 days

90 days

1 year

Top-up packs

—

Priority support

—