#barcode

Validate and work with product and publication codes. Check the check digit of any EAN-8, UPC-A, EAN-13, GTIN-14, ISBN-10, ISBN-13 or ISSN code — the type is detected automatically and you get back whether it is valid plus the expected check digit. Compute the missing check digit for a partial code, and validate or convert ISBNs between the 10- and 13-digit forms. Hyphens and spaces are ignored, so you can paste codes straight from a label or catalogue. Pure local computation — no key, no third-party service, instant. Live. 4 endpoints. Built for retail and inventory systems, e-commerce catalogues, publishing, library tooling and data validation. Distinct from barcode image generation, payment-card (Luhn) and IBAN checks.

api.oanor.com/barcodecheck-api

Read (decode) a QR code from an image — the inverse of a QR generator. Pass an image URL (we fetch it) or a base64 image (a data-URI or raw base64) and get back the decoded text or URL, the QR version and the corner coordinates of the code within the image. PNG, JPEG, BMP, TIFF and GIF are supported (up to 10 MB); large images are downscaled automatically so decoding stays fast. Decoding runs locally (no third-party scan service) and nothing is stored. Every call is live. 2 endpoints. Built for scanning uploaded QR codes, processing screenshots and documents, ticket and coupon validation, and back-end automation. No upstream key.

api.oanor.com/qrdecode-api

Generate barcodes as PNG images — EAN-13, EAN-8, UPC-A/E, Code 128, Code 39, ITF-14, ISBN and 2D codes (QR, Data Matrix, PDF417, Aztec) — returned as base64 or a raw image, with adjustable size and human-readable text. Fully server-side. Perfect for retail, inventory, shipping labels, ticketing and asset tracking.

api.oanor.com/barcode-api

Look up packaged food products by barcode (EAN/UPC/GTIN) and get the product name, brand, ingredients, allergens, Nutri-Score, NOVA group, Eco-Score and per-100g nutrition facts — or search the catalogue by name. Backed by the Open Food Facts database. Ideal for nutrition trackers, diet and fitness apps, grocery and retail tools.

api.oanor.com/food-api

Generate QR codes on demand as a base64 PNG, an SVG, or a raw embeddable image. Customise size, quiet-zone margin, error-correction level and foreground/background colors. Encode URLs, text, Wi-Fi, vCards and more.

api.oanor.com/qr-api