Open Image Search vs SerpApi

Open Image Search is an open-source reverse image search prototype for graphical collections and museums working with digitized prints and paintings. Its hosted demo searches more than 20,000 prints from the Graphische Sammlung of ETH Zürich. Collections can clone the project and run retrieval locally with their own image data. The search pipeline extracts image features with VGG16 and uses a k-nearest neighbors model to locate similar images. Image metadata can be supplied in a CSV file using column names defined in the documentation. The web interface is designed for mobile devices and can send searches from a phone camera. A Django REST Framework backend reformats uploads in memory, sends them to the feature-extraction model, and retrieves metadata for top matches. The project uses technologies including Vue, Django, TensorFlow, scikit-learn, SQLite, and Nginx. It is available as self-hosted software or a hosted web application under the MIT license. The repository is in development, prototype-stage, and read-only after archival on September 1, 2026.

SerpApi provides an API that retrieves structured search results from Google and other search engines. Results include organic listings, Maps, Local, Stories, Shopping, Direct Answer, and Knowledge Graph data, returned in JSON. A location parameter can retrieve Google results from locations around the world. SerpApi says requests run immediately in a full browser and use CAPTCHA-solving technology. Integrations are listed for Ruby, Python, JavaScript, Golang, PHP, Java, Rust,.NET, MCP, Swift, C++, and CLI. Only successful searches count toward the monthly allowance; cached, errored, and failed searches do not. The Free plan includes 250 searches per month, and paid plans start at $25/mo for 1,000 searches. Search data expires automatically after 31 days; ZeroTrace Mode prevents search parameters, files, and data from being stored after a search completes. SerpApi lists SOC 2 Type II, SOC 3, and ISO 27001 as acquired, with GDPR marked in progress. U.S. Legal Shield is included with Production and higher plans, with up to $2 million in coverage.