2 Best APIs for SVG Output in Nigeria

QRCode Monkey is a feature-rich QR code generation platform and API that creates highly customizable, branded QR codes with embedded logos, custom colors, gradient fills, shaped dots, and styled frames. Unlike basic QR code generators that produce generic black-and-white squares, QRCode Monkey produces QR codes that align with brand identity — making them effective visual communication elements as well as functional scanning targets. The platform offers both a web-based designer interface and a REST API for programmatic generation. The API accepts a data payload (URL, text, contact details, WiFi credentials, or any text content) along with extensive styling parameters, and returns the generated QR code as PNG (up to 3000px resolution) or SVG — making it suitable for both digital and high-quality print use cases. Custom color options include solid fill colors, gradient fills (linear and radial), and eye-specific coloring for the finder patterns (the three corner squares that help scanners locate the QR code). The dot shapes that make up the QR code matrix can be customized with options including rounded dots, diamond shapes, and other geometric styles, creating a distinctive visual character that plain QR codes lack. Logo and icon embedding is one of the most popular features. Developers can supply a company logo or icon URL, and QRCode Monkey places it centrally within the QR code while maintaining sufficient error-correction capacity for reliable scanning. The QR code error correction level (L, M, Q, H) can be configured to ensure the code remains scannable even with a logo covering part of it. For Nigerian businesses, QR codes serve multiple important practical functions. Nigerian restaurants, cafes, and hospitality businesses have widely adopted digital menus delivered via QR code since the COVID-19 pandemic, and branded QR codes with the restaurant logo create a more professional impression than generic codes. Event organizers use QR codes on tickets for rapid entry scanning. Nigerian retail shops use QR codes for contactless payment with mobile money systems. Nigerian marketing professionals can generate branded QR codes for print advertisements, outdoor billboards, business cards, and product packaging — linking to websites, promotional content, or contact information. Having the company logo embedded in the QR code reinforces brand recognition at every touchpoint where the code appears. Nigerian developers building applications that need to generate QR codes programmatically — for ticket issuance, product labeling, or document tracking — benefit from the API integration. Instead of generating plain QR codes, their applications produce branded outputs that align with their clients' visual identity. The free tier allows unlimited basic QR code generation with standard features, making it accessible for small Nigerian businesses and independent developers. The Pro tier at $6.95/month removes watermarks from API-generated codes and enables SVG output, which is important for scalable print use cases. The API endpoint is straightforward to call with standard HTTP requests, requiring no special SDK or client library. QRCode Monkey codes are built with proper error correction levels to ensure reliable scanning even in challenging conditions — partial damage, low contrast printing, or small print sizes. This reliability is essential for Nigerian businesses that print QR codes on packaging, receipts, and outdoor materials where scanning conditions vary. QRCode Monkey's API endpoint accepts POST requests with a JSON body specifying the QR data, style configuration, and output format, returning the QR code image directly. This makes it easy to integrate programmatic QR generation into any Nigerian application backend without installing local QR generation libraries.

Kroki is a unified, open source diagram-as-code rendering service that provides a single REST API endpoint for generating diagrams from text-based definitions across more than 25 different diagramming languages and notations. Instead of integrating separate tools and libraries for each diagram type, developers use a single Kroki endpoint and specify the diagram type — Kroki routes the rendering to the appropriate engine behind the scenes. The supported diagram types span the full range of technical and business diagramming needs: Mermaid for flowcharts, sequence diagrams, Gantt charts, and class diagrams; PlantUML for UML sequence, activity, component, and state diagrams; Graphviz DOT for general-purpose directed and undirected graphs; C4 for software architecture context, container, and component diagrams; D2 for declarative diagramming with an elegant syntax; BPMN for business process modeling; ERD for entity relationship diagrams; and many others including Excalidraw, BlockDiag, NwDiag, and WaveDrom. The API interface is simple and consistent. For a POST request, send the diagram source as the request body with the diagram type and output format in the URL path. For GET requests, the diagram source is base64-encoded and included in the URL — making it possible to embed live-rendered diagrams directly in Markdown documents using standard image syntax without any backend infrastructure. Output formats include SVG (scalable vector graphics, ideal for web embedding and documentation), PNG (raster format for presentations and exports), and PDF (for document generation). SVG output is particularly valuable because the diagrams scale perfectly at any size and can be styled with CSS. The diagram-as-code approach transforms how Nigerian engineering teams manage technical documentation. When architecture and flow diagrams are stored as text definitions in version control alongside the source code they describe, they stay in sync with the code — reviewable in pull requests, diffable, and updatable without needing diagram software. This is a significant improvement over binary diagram files (Visio, Lucidchart exports) that cannot be meaningfully reviewed or versioned. For Nigerian startups and technology companies building engineering culture and documentation practices, Kroki provides a foundation for maintainable technical documentation. Architecture diagrams, API flow diagrams, database schemas, and deployment topology diagrams can all be maintained as text and rendered on demand. Nigerian technical writers, developer advocates, and documentation teams can embed Kroki-rendered diagrams in documentation sites, wikis, and READMEs by embedding the Kroki URL as an image source. The diagram renders live from its source definition — no image export, upload, or file management required. The service is completely free to use via the public kroki.io instance, with no API key or registration required. For organizations with data privacy requirements or reliability needs, Kroki can be self-hosted using Docker, giving full control over the rendering infrastructure. This makes it ideal for Nigerian organizations with strict data handling requirements. Since Kroki is open source under the MIT license, Nigerian developers can inspect the source code, contribute improvements, or fork and adapt it for specific needs. The project is actively maintained and continuously adds support for new diagram types as they gain adoption in the developer community. Kroki's Docker image bundles all diagram rendering engines together, so a self-hosted instance provides all 25+ diagram types without separate installation of each diagramming tool. Nigerian teams deploying Kroki internally get the full diagram catalog from a single container, with no additional software installation required.