One API. Four Packing Use Cases. Zero Wasted Space.
Single REST endpoint for 3D packing optimization. Get coordinates, loading order, and SVG visualization.
One engine, many applications. Configure orientation constraints, loading direction, and container dimensions to fit your scenario.
Optimize how products are packed into shipping boxes with P4P's cartonization API. Define upright-only constraints per item, set maximum box weight, and get back exact placement coordinates in loading order. Top-down loading mode supported.
Automate pallet load planning with configurable stacking order, upright constraints, and custom pallet dimensions. The palletization API returns item-by-item placement in physical loading sequence, ready to feed into your WMS or warehouse software.
Maximize space utilization in shipping containers with automated 3D container loading optimization. Configure door placement, side-loading direction, and per-item orientation rules. Supports standard ISO container dimensions or any custom size.
Plan truck and trailer loads with precision using the truck loading API. Define trailer dimensions, set loading direction (front or side), and apply per-item orientation rules. Reduce the number of trips and maximize every load with combinatorial optimization.
Four steps from input to optimized packing result.
Specify dimensions, quantities, and constraints for each item type.
Set container dimensions and loading mode, top-down, front, or side.
POST your request to /api/pack or use the interactive Sandbox.
Receive optimized packing with exact placements and 3D visualization.
P4P Packing is built API-first. There is no GUI to learn, no account required to start, and no monthly subscription to commit to. Send a single POST request with your items and containers, get back a near-optimal 3D load plan in seconds. Whether you are building a warehouse management system, an e-commerce fulfillment platform, or a logistics quoting tool, P4P integrates in hours, not weeks. The same engine handles cartonization, palletization, container loading, and truck loading so you ship one integration, not four.
P4P is designed for systems that need reliable, API-driven load optimization across real-world logistics and fulfillment workflows, such as:
A single REST endpoint. Send items and containers, get back optimized packing.
{ "items": [ { "name": "Electric Kettle", "length": 8, "width": 8, "height": 12, "unit": "in", "quantity": 40, "weight": 3.5, "uprightOnly": true }, { "name": "Cutting Board", "length": 18, "width": 12, "height": 1, "unit": "in", "quantity": 60, "weight": 1.2 } ], "containers": [ { "name": "24x18x18 Shipping Box", "length": 24, "width": 18, "height": 18, "unit": "in" } ], "weightUnit": "lb", "maxContainerWeight": 40, "optimizeBy": "volume" }
Try the API for free, then pay only for what you use. No monthly fees, no commitments.
$0
No registration required. 1 request per minute. Perfect for evaluation and testing.
$0.03 / request
Register for an API key. No rate limits. New accounts receive $10 free credit.
P4P Packing is a 3D packing optimization API built by Pro4Soft Inc. designed to handle cartonization, palletization, container loading, and truck loading through a single REST endpoint. Whether you're fitting products into shipping boxes, stacking cartons onto pallets, or loading freight into containers and trucks, P4P Packing finds the optimal arrangement that minimizes wasted space and reduces the number of containers needed. The algorithm uses advanced combinatorial optimization techniques to approach near-optimal results.
Beyond space utilization, the engine determines the exact order in which items should be packed into each container. Loading direction is configurable, top-down for pallets and boxes, or from the side for shipping containers and trucks. Each item can be kept upright or rotated freely. The result includes precise placement coordinates for every item, ready to feed into your own systems or visualize in the interactive 3D Viewer.
The API can be used without registration for evaluation and testing at 1 request per minute. For production use, register for an API key and pay only $0.03 per request with no rate limits. New accounts receive $10 in free credit. Experiment with the interactive Sandbox, which includes a full 3D visualization of packing results.
P4P Packing is under active development. We are continuously refining the algorithm to improve packing quality, support more constraints, and handle a wider range of real-world scenarios.
Cartonization is the process of automatically determining how products should be packed into shipping boxes to minimize wasted space and reduce shipping costs. P4P's cartonization API takes item dimensions, quantities, and constraints as input and returns the optimal arrangement with exact 3D coordinates.
Palletization is the process of arranging boxes or products onto a pallet in an optimal stacking order. A palletization API like P4P automates this by considering item weight, upright constraints, and stacking order to generate a load plan that is both space-efficient and physically stable.
You send container dimensions and a list of items (with dimensions, quantities, and orientation rules) to the POST /api/pack endpoint. P4P returns each container packed with exact item placements in side-loading order, ready to use in your application or visualize in the built-in 3D viewer.
Yes. Define your trailer dimensions as a container, set the loading mode to front or side load, and the API returns an optimized truck loading plan with exact placement coordinates for every item. Weight limits and per-item orientation rules are fully supported.
Yes. The packing API can be used without registration at 1 request per minute, no API key required. This is designed for evaluation and testing. For production use, register for an API key and pay $0.03 per request with no rate limits. New accounts receive $10 in free credit.
Disclaimer: P4P Packing is provided "as is" without warranty of any kind. Pro4Soft Inc. assumes no responsibility or liability for the accuracy, completeness, or suitability of packing results produced by this engine. Use at your own discretion.