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Postmarkr is a SaaS platform that turns PDF uploads into physical USPS mail. Built on Next.js, Stripe, and Lob APIs. Integrates address verification, real-time USPS tracking, and pay-per-piece billing with no subscription required. | Upload once, export print-ready everywhere. The POD print-readiness tool for Etsy, Redbubble & Amazon Merch sellers. |
USPS Mail API, Address Verification, Real-time USPS Tracking, Certified Mail, Priority Mail, PDF Processing, Pay Per Piece Billing, Stripe Integration, Lob Integration, SaaS Platform | AI-powered print-readiness checker, One-click image optimization for POD, CMYK conversion and bleed resizing, Export for Etsy, Redbubble, Amazon Merch, Batch processing, Credit-based pricing |
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Cloudinary is a cloud-based service that streamlines websites and mobile applications' entire image and video management needs - uploads, storage, administration, manipulations, and delivery.

imgix is the leading platform for end-to-end visual media processing. With robust APIs, SDKs, and integrations, imgix empowers developers to optimize, transform, manage, and deliver images and videos at scale through simple URL parameters.

OpenCV was designed for computational efficiency and with a strong focus on real-time applications. Written in optimized C/C++, the library can take advantage of multi-core processing. Enabled with OpenCL, it can take advantage of the hardware acceleration of the underlying heterogeneous compute platform.

ImageKit offers a real-time URL-based API for image & video optimization, streaming, and 50+ transformations to deliver perfect visual experiences on websites and apps. It also comes integrated with a Digital Asset Management solution.

scikit-image is a collection of algorithms for image processing.

Effortless image resizing, optimization and CDN delivery. Make your site fully responsive and really fast.

Now it's faster and easier than ever to verify addresses on your website. Help your customers provide valid address data by verifying it in real-time with our API. Display multiple matches if the address is ambiguous, and alert them when the address is invalid. Your shipments will be cheaper and arrive faster, and your customers will be satisfied knowing that their addresses were submitted correctly the first time.

Trouble creating visuals? Try Nano Banana AI Image Editor with Nano Banana Pro by Gemini 3—generate free, unique images online. Upload or describe, no sign-up.

Try Nano Banana Pro for free, Gemini's AI image generator and photo editor, allows you to create high-quality images and turn photos into endless new creations.

It supports JPEG, PNG and GIF files. You can optimize your images in two ways - by providing an URL of the image you want to optimize or by uploading an image file directly to its API.