Openverseの無料画像検索
Openverse is an open-source search engine that aggregates over 700 million Creative Commons-licensed and public domain media files, including images and audio.Managed by the WordPress project, it indexes content from diverse repositories such as Wikimedia Commons, Flickr, and specialized museum collections. The platform provides a unified interface to filter results by specific license types, file formats, and source origins, facilitating the discovery of reusable assets while ensuring compliance with attribution requirements through automated metadata generation.The full code (bot engine, the database management, and the frontend) was created by the Creative Commons team and is available on Github.Tip: see the other entry in our database for the list of all images […]
公開画像リポジトリ
A great list of free access images and multimedia repositories (check the licenses).In fact these are the sources used by the Openverse project (link in our tools directory). With these page you can access these directly when needed for granular search or bulk download.Openverse is an open-source search engine that aggregates over 800 million Creative Commons-licensed and public domain media files, including images and audio; the source page listed here identifies the specific external repositories indexed by the platform, such as NASA, the Smithsonian Institution, Wikimedia Commons, and iNaturalist.
FDAオレンジブック：承認済み医薬品
The FDA Orange Book, officially titled Approved Drug Products with Therapeutic Equivalence Evaluations, serves as the definitive regulatory database for pharmaceutical products approved for safety and effectiveness under the Federal Food, Drug, and Cosmetic Act.It provides all data on active ingredients, proprietary names, and applicant holders, while identifying Reference Listed Drugs (RLD) and Reference Standards (RS) essential for generic drug development. The service details Therapeutic Equivalence (TE) codes, which signify whether a generic product is bioequivalent to its brand-name counterpart, and maintains the official record of patent listings and regulatory exclusivity periods that dictate market competition timelines.Important: we do not recommend the usage of this resource for personal medication.Pharmaceutical scientists […]
Europeanaの画像とアーカイブ検索
Europeana aggregates and provides access to over 50 million digitized items from more than 3,500 European cultural heritage institutions. The platform utilizes the Europeana Data Model (EDM) to ensure metadata interoperability across diverse media types, including 3D models, manuscripts, maps, and technical drawings.By incorporating a lot of rare resources and EU museums it include very originals and rare documents. Be sure to check the license before using each of them, as these licenses are very diverse here.Tip for developers: it also offers an API that facilitates the programmatic discovery and reuse of high-resolution cultural and scientific assets for academic, educational, and commercial development.If permitted: for historical research, for illustration, for […]
GTmetrixページ速度テスト
Does not only tell you a ranking and a the time a page takes to load, but a super clear breakdown of each element, its timing and size and potential issues or errors.A must for any website tuning and became an industry standard.Registering is not required for single test, while free registration gives you the ability to automatically monitor a page, and upgrading to a paid version gives more options such as location choice, browser choice or more pages to follow.
RSSバリデーター
Feed Validation Service for Atom or RSS feed by W3C.Just enter the URL and you’ll have a direct report on the compliance to the standard.Note that due to the age of the RSS standard and its variants, many RSS readers are coded to account with many flavors of RSS, including deviations and mistakes.
「サーバー近隣」の逆引きIP
Give any IP and find the sites hosted at that IP, your “IP neighbors” !Although we can not say if this service is 100% exhaustive, we found more results on this service than on others.Note: it will send you after to their own domain service; click back if needed again.
キーワード検索
Search-related keywords to the one entered.Provides basic web popularity statistics on these keywords. It is of course initially intended for SEO needs but can be also helpful for reports or writings. The big advantage is the country (a bit) and industry-specific (a lot) to provide mean full results compared to other online tools we have tested.One can also enter an URL and it will provide related keywords and topics.25 first results will be available right away, while the next results or downloading the results will need some registration.
ソーシャルシグナルカウンター
Provide any website URL, and it will tell you how many backlinks it has on all major social networks. It counts all links on Facebook, Tumblr, Pinterest, Reddit, Xing, VK, Buffer, and Getpocket in one go.For Marketers and SEO analysts.Very efficient.Completely free, fast, and with no registration at all.
リンク切れチェッカー
Provide your site base URL, and this tool will crawl your site and report all internal and external broken links it will find on all your pages.It is slow on big sites, but at least in our tests, it has indeed detected broken links that other tools did not report. It will require you to leave your browser on that page while fetching the results.In case of a broken link, it will provide the link, your page where the link is located, and the server response type (404, 503 ….)Tip: in our own tests with this tool, we had some false positive “broken” links when the remote site was using […]