The U.S. National Archives Flickr

The National Archives and Records Administration (NARA) or National Archives is a “record keeper” of the United States Federal government. Besides contributions from the National Archives, the Flickr account contains photographs from the National Archives and the federal photography project called Project DOCUMERICA (1971 – 1977). The project was initiated by the Environmental Protection Agency (EPA) to capture the environmental problems and achievements of that era.

Wikimedia Commons

Wikimedia Commons is a “media file repository” of public domain and freely-licensed educational media content, including images, sounds and video clips. Launched on 7 September 2004 by the Wikimedia Foundation, Wikimedia Commons uses the “wiki-technology” that is the same technology used in Wikipedia. Wikmedia Commons also aggregates files from other projects, including Wikipedia, Wikibooks, Wikivoyage, Wikispecies, Wikisource, and Wikinews. As of October 2015, there are more than 28.7 million files in more than 120,000 collections. Users can conduct a keyword search or browse the content by topic, type, author, location, license and source.

Divvy Pixel Free Public Domain Images

Divvy Pixel curates public domain images from various sources. Images provided on their main site and online galleries are on public domain and can be used personally or commercially. Users can browse and download the images individually or all at once.

Picjumbo

Picjumbo is developed by photographer, Viktor Hanacek. Users can search by keywords or browse by different categories.

Photogen

Photogen provides free high-resolution photographs for download and reuse. Users can search by keywords or browse by categories.

Pixabay

Pixabay is a photo community that provides images on public domain. The site contains curated images contributed by photographers around the world. As of September 2015, there are more than 470,000 photographs, vectors and illustrations. Users can search by keywords or browse by various categories.

LIFE Photo Archive

The LIFE Photo Archive is a comprehensive archive of photographs and etchings that are produced or owned by the defunct LIFE Magazine, dating back to the 1750s. Captured by LIFE photographers and photo journalists like Alfred Eisenstaedt and Margaret Bourke-White, the photographs documented important events in the world, evolution of fashion and lifestyles and the lives of celebrities and everyday people. According to Google, most of the photographs have never been published. Started in 2008, users can search for millions of images from the LIFE archive, which contains about 10 million photographs. Users can do a keyword search by adding “source:life” to any Google image search. For example, “vietnam war source:life”. Alternatively, users may browse by different categories.

MMT Photos

Developed by Brooklyn-based interface and experience designer, Jeffrey Betts, MMT is a site that contains high-resolution photos on public domain. Users can search by keyword or browse by different categories.

Te Papa Collections Online

The Museum of New Zealand Te Papa Tongarewa is the national museum of New Zealand. Their collections online contain information of more than 500,000 works of art. Among them, more than 30000 have downloadable images for reuse in high resolution. Users can search by keywords.

Museum at the Fashion Institute of Technology Collections

A division of the Fashion Institute of Technology, the Museum at FIT (MFIT) is one of the specialised fashion museums accredited by the American Alliance of Museum. The museum’s permanent collection contains about 50,000 garments and accessories from the 18th century to present. The works include pertinent designers such as Chanel, Dior and Balenciaga. Users can search or browse by time periods and types.

FoodiesFeed

Developed and designed by food photographer, Jakub Kapusnak, FoodieFeed is “a resource of free high resolution food pictures available to download and use on your website, blog, in your presentation, your website template, WP demo, in design project for your client or just anywhere else”. Users can search by keywords or browse by different categories.

Raumrot.com

Raumrot.com presents “free, handpicked stockphotos” for commercial and personal uses. As of July 2015, there are 681 of such images. Users can browse by categories or by special image sets.

Lock & Stock Photos

Lock & Stock Photos provides photographs taken by social media marketeer, AJ Montpetit.

Split Shire

Developed by Italian photographer and graphic designer, Daniel Nanescu, Split Shire provides copyright-free photographs for designers, bloggers, social marketeers and commercial companies. Users can search or browse images by categories.

OMCA Political Posters

This collection was started as part of the “All Of Us Or None” (AOUON) archive project by Free Speech Movement activist Michael Rossman in 1977. The objective was “to gather and document posters of modern progressive movements in the United States”. The collection contains more than 20,000 political posters with a focus on “the domestic political poster renaissance that began in 1965 and continues to this day”. Users can search or browse the images.

PLiXS Image Database

Founded by a startup based in Switzerland, PLiXS is a database of free high resolution images. As of August 2015, there are close to 3,400 images, contributed by photographers around the world. Users can search or filter their search by photo filters and categories.

Skitterphoto

Skitterphoto provides photographs that are taken by three photographers based in Groningen, The Netherlands. Since the platform launched in 2014, a photo is uploaded every single day. Users can search or browse by categories.

Freepik

From vectors to PSD files, icons and stock photos, Freepik provides resources for graphic and web design. As of August 2015, the site has received more than 440 million downloads. Developed by “a team of designers, developers, professionals of marketing, communication and administration” based in Spain, Freepik offers two types of content: free and exclusive graphic resources by Freepik, and graphic resources belonging to others. Users can search or browse by categories.

Vintage Printable

Vintage Printable provides images that are believed to be on public domain or out of copyright. Most of the images are focused on vintage naturalist or scientific illustrations. Users can search or browse by different categories.

Travel Coffee Book

Travel Coffee Book is a photo blog that provides photographs captured by photographers around the world. They are mainly travel photographs. 10 new photos will be added every 10 days.