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Generate charts, QR codes, barcodes, tables, word clouds, and diagrams
Check key recognition using a non-persistent QR render.
Render a Chart.js chart as an image or PDF.
7 fields
Save a chart and return a reusable short URL; the saved chart retains the API key.
Validate a chart and return structured errors and warnings.
Render a word cloud from text or a weighted word list.
16 fields
Render table columns and rows to PNG.
2 fields
Overlay a watermark on a publicly accessible image.
10 fields
Render a Graphviz DOT diagram.
5 fields
Render a customized QR code.
14 fields
Validate a QR request and return structured errors and warnings.
Build one public QR image URL without rendering it.
Build QR image URLs in input order without rendering them.
1 field
Render up to 1000 QR codes into a ZIP archive.
Render a barcode such as code128, ean13 or datamatrix.
9 fields
Decode a QR code from a public image URL.
Generate a Chart.js configuration and saved URLs from a description.
4 fields
