QuickChart - QuickChart is easy to use and open-source open API that makes it easy to generate chart images.
pdflayer - Free, powerful HTML to PDF API supporting both URL and raw HTML conversion. Unlimited document size, lightning-fast and compatible PHP, Python, Ruby, etc.
Visualis - Use Visual.is to create beautiful and dynamic reports, charts and dashboards.
Doczilla - Effortlessly create stunning PDFs and screenshots. Seamlessly store them in your own AWS or Google Cloud Storage bucket, putting the control and creativity right at your fingertips.
ChartURL - Add rich, data-driven charts to web & mobile apps, Slack bots, and emails. Send us data, and we return an image that renders perfectly on all platforms.
PDFCrowd - Pdfcrowd is a Web/HTML to PDF online service. Convert HTML to PDF online in the browser or in your PHP, Python, Ruby, .NET, Java apps via the REST API.