Free Satellite Imagery Sources: The Complete Guide
On this page
- What actually counts as "free" satellite imagery?
- What can satellite imagery actually be used for?
- The most popular free satellite imagery sources
- 01. Copernicus Data Space Ecosystem (Sentinel Hub)
- 02. NASA-ISRO NISAR
- 03. USGS EarthExplorer
- 04. NASA Earthdata Search
- 05. NASA Worldview and GIBS
- 06. Google Earth
- 07. Bing Maps
- 08. Vantor (formerly Maxar) Open Data Program
- 09. ArcGIS World Imagery Wayback
- 10. NOAA Data Access Viewer
- 11. Earth on AWS
- 12. Zoom.Earth
- 13. Soar Atlas (formerly Soar)
- 14. buysatelliteimages.com (XRTech Group)
- Which free source has the highest resolution satellite imagery?
- Which free source has the most updated satellite view?
- Tips for making the most of free satellite imagery sources
- Free vs. commercial satellite imagery: when to upgrade
- Frequently asked questions
- Sources and further reading
Free satellite imagery is more available today than at any point before, but "free" covers a wide range of things: open government archives, research portals, and free sample tiles from otherwise-paid commercial providers. This guide brings the most widely used free sources together in one place, from the European Space Agency's Sentinel missions to the NASA-ISRO NISAR radar mission that only opened to the public in 2026, so you can find the most up to date satellite imagery, the highest resolution satellite imagery free sources actually offer, and the right platform for the job, without hunting through a dozen separate websites.
Quick answer
The best free satellite imagery comes from government and research programs: Copernicus Data Space Ecosystem (Sentinel-1 radar and Sentinel-2 optical, 10 m), USGS EarthExplorer (Landsat, 40+ years of archive), NASA Worldview (near real-time, updated every few hours), and the newly public NASA-ISRO NISAR radar mission (5-10 m, released in 2026). True open-data resolution tops out around 10 m; sharper free imagery, down to sub-10 cm, comes from historical basemap archives like ArcGIS World Imagery Wayback, Bing Maps' Bird's Eye imagery, or free sample tiles offered by commercial providers, including buysatelliteimages.com, ahead of a paid order.
What actually counts as "free" satellite imagery?
Before comparing sources, it helps to separate two things that both get marketed as "free." Open data is imagery a government or research program releases to anyone, no purchase ever required: Sentinel, Landsat, and NISAR all fall into this group. Free samples are different: a commercial provider lets you preview or download a limited amount of its normally paid, higher-resolution imagery, as a way to demonstrate quality before you buy. Both are genuinely free to use, but they come with different catches, open data updates on a fixed satellite schedule you can't change, while free samples are usually capped by area, resolution, or how many you can request.
One more thing worth clearing up: despite how it's often marketed, free satellite imagery is almost never a live video feed of your house. Most free optical imagery is between a few days and a few years old, and the sharpest, most current data is reserved for paid tasking. If you need imagery captured within the last 24 hours, that is a paid, tasked order, not something any free source on this list provides.
What can satellite imagery actually be used for?
Before jumping into sources, it's worth stepping back to what satellite imagery is actually for, since that shapes which free source is worth your time. At its core, satellite imagery is a way to see and measure the Earth's surface from orbit, repeatedly, over the same location, without sending anyone there in person. That single capability drives a wide range of real work: farmers and agronomists use it to track crop health and irrigation needs across entire fields, city planners and surveyors use it to catch unapproved construction and track how fast a city is growing, and insurers use time-stamped imagery to verify storm and flood damage claims without waiting for roads to reopen. Environmental researchers use it to track deforestation, coastline erosion, and glacier retreat over years or decades, something no ground survey could realistically repeat. Governments and humanitarian groups use it to map disasters as they unfold. Even hobbyists and students use it just to explore how a place has physically changed over time.
Free sources cover a real slice of this work well, land cover, vegetation trends, long-term change, and disaster response in particular. Where free data runs out of runway is anywhere a project needs sub-meter detail on a specific, recent date over a specific, small area; that's the gap paid tasking exists to close, and it's covered further down in this guide.
The most popular free satellite imagery sources
These fourteen sources cover the large majority of what anyone searching for free satellite imagery actually needs, chosen because they're the platforms people actually use and search for, not the longest possible list of niche portals.
01. Copernicus Data Space Ecosystem (Sentinel Hub)
The Copernicus Data Space Ecosystem, accessed through the Copernicus Browser, is the official home for every Sentinel mission: Sentinel-1 C-band radar (SAR) at down to 5 m, revisiting the whole planet roughly every 6 days in any weather; Sentinel-2 optical and multispectral imagery at 10 m, refreshed every 5 days and the standard free source for NDVI and vegetation analysis; Sentinel-3 for land and ocean monitoring; and Sentinel-5P for atmosphere and air quality. It replaced the older Copernicus Open Access Hub in January 2023, and the near-identical Sentinel Hub interface offers the same underlying data. Beyond basic search, the browser includes false-color infrared and NDVI processing, a side-by-side compare tool, a drawing and measuring toolkit, timelapse generation, a 3D viewer, and full-tile downloads, all free and in the browser, with no separate desktop software needed.
02. NASA-ISRO NISAR
NISAR is the newest source on this list, and it changes the picture for free radar data. A joint NASA-ISRO mission, its L-band radar data became publicly available through NASA's Alaska Satellite Facility DAAC in July 2026, covering every landmass on Earth every 12 days at 5 to 10 m resolution. Unlike Sentinel-1's C-band radar, NISAR's L-band signal penetrates deeper into vegetation and soil, making it especially valuable for free biomass, soil moisture, and ground-deformation monitoring that previously required a paid SAR subscription.
03. USGS EarthExplorer
EarthExplorer, run by the US Geological Survey, is the free archive for the Landsat program, over 40 years of continuous 30 m optical imagery (15 m panchromatic), the longest satellite record of Earth's surface that exists. It also carries free data from MODIS, ASTER, and SRTM elevation models, historical commercial imagery like IKONOS and early SPOT scenes, digital elevation data, and even some declassified spy satellite imagery. Browsing is free for anyone, but a free account is required to actually download files. A practical workflow: draw your area of interest (or use the "Use Map" shortcut for whatever's on screen), turn on the Dataset Prefilter so only datasets that actually cover your area show up, then check Results. If the exact scene you want hasn't been scanned into the online archive yet, EarthExplorer lets you request on-demand scanning for $30 per scene plus a $5 order fee, though delivery typically takes 3 to 4 weeks with no priority option.
04. NASA Earthdata Search
Earthdata Search is the browsing front end for NASA's entire EOSDIS archive, hundreds of free datasets spanning atmosphere, ocean, land cover, ice, and vegetation, collected by dozens of NASA missions beyond Landsat: Terra, Aqua, ICESat-2, and more. It has no built-in analysis tools and a real learning curve, since finding the right dataset among hundreds of "collections" takes some digging, but for research-grade free satellite and Earth-science data, it has few equals.
05. NASA Worldview and GIBS
NASA Worldview is the closest free source gets to an updated satellite view of a live event. It displays imagery within about 3 hours of satellite capture, pulled from MODIS, VIIRS, and other NASA sensors, and lets you browse by event: wildfires, floods, dust storms, and tropical cyclones are pre-tagged with markers on the map. The Global Imagery Browse Services (GIBS) behind it offers the same imagery through an API, for developers who want to pull the most up to date satellite imagery programmatically instead of clicking through a browser.
06. Google Earth
Google Earth remains the most familiar free satellite imagery source, with a simple, no-account-needed interface covering the entire globe on web, desktop, and mobile. Spatial resolution varies sharply by location: most of the world sits well below 1 m, while major cities and infrastructure sites across the US, Western Europe, and East Asia reach as sharp as 15 cm, though that detail comes from aircraft, not satellites. Coverage is a patchwork of ages, some areas refresh every few years, others are older, and Google Earth Engine, a separate free platform for researchers, adds the analysis tools the consumer app lacks.
07. Bing Maps
Bing Maps remains the other major free, no-account-needed satellite and aerial viewer alongside Google Earth, and it's worth knowing Microsoft is only retiring the paid Bing Maps for Enterprise developer platform (folding it into Azure Maps by 2028); the free public site at bing.com/maps isn't going anywhere. Standard aerial imagery reaches 30 cm across most of the US and Western Europe and down to 15 cm in dense urban areas, and Bird's Eye View adds angled, near-oblique imagery at sub-10 cm detail across several hundred cities, a genuinely different way to inspect a building or block than the straight-down view every other source on this list uses. There's no fixed refresh schedule; Microsoft rolls out new aerial and Bird's Eye coverage in ongoing waves rather than on a set cycle.
08. Vantor (formerly Maxar) Open Data Program
Vantor's Open Data Program (built and still widely known under the earlier Maxar brand) releases free, high-resolution pre- and post-disaster satellite imagery for major hurricanes, earthquakes, floods, and wildfires, sharp enough to assess individual structures, licensed under a non-commercial Creative Commons license (CC BY-NC 4.0) for rapid humanitarian use. Coverage is limited to declared disaster events rather than the whole planet, but for those events it is some of the best free high resolution imagery available anywhere. It pairs naturally with the radar-based disaster mapping described in our guide to SAR satellite imagery for disaster response.
09. ArcGIS World Imagery Wayback
Wayback is Esri's free digital archive of every version of the World Imagery basemap going back to February 2014, over 150 versions in total, letting you scrub through time to see how a location has changed. Current World Imagery resolution reaches 1 m or better across most of the world's landmass, and Vantor's newer Vivid Mosaic layer pushes the global basemap to 30 cm, with pockets down to 15 cm in the most actively updated regions, making it one of the sharpest free satellite imagery maps available for browsing. Two features make it more than a static archive: Swipe Mode, which lets you drag a slider to compare two dates of imagery over the same spot side by side, and Animate mode, which turns a location's full history into a timelapse you can export and download as a GIF to share anywhere.
10. NOAA Data Access Viewer
NOAA's Data Access Viewer is the agency's main free archive for high-resolution imagery, land cover, and lidar/elevation data across the coastal United States, Alaska, Hawaii, and the territories, backed by a broader environmental satellite library (NOAA CLASS) covering weather and climate data nationwide. Neither offers real-time imagery on its own, but NOAA's geostationary GOES satellites separately refresh a low-resolution (roughly 250 m to 2 km) view of the full Western Hemisphere about every 15 minutes, the fastest update cycle of any free source on this list, just traded off against very coarse detail.
11. Earth on AWS
Most major open satellite datasets, Sentinel-2, Landsat-8, NAIP, and more, are hosted directly on Amazon Web Services, and Earth on AWS is the free, cloud-native way to access them. It isn't browsable the way Google Earth is; it's built for people who already know which dataset they need and want to process it at scale, in the cloud, without downloading terabytes to a local machine first. AWS also offers free cloud credits to students and researchers to help cover that processing.
12. Zoom.Earth
Zoom.Earth is a fast, zoomable global map that pulls new imagery every 10 minutes from NOAA GOES and JMA Himawari, and every 15 minutes from EUMETSAT Meteosat, with a typical 20 to 40 minute lag between capture and availability, making it one of the more genuinely current free satellite view tools available, alongside historical high-resolution basemap tiles from Bing and Esri that update every few months when you zoom in closer. It layers in storm tracks and forecast data automatically, which makes it a popular free option for watching a hurricane or typhoon develop in near real time.
13. Soar Atlas (formerly Soar)
Soar Atlas, rebranded from Soar in 2026, is a community map-sharing platform, closer to a social network for maps than a traditional archive, hosting over a million user-uploaded maps and satellite images alongside a built-in viewer for Sentinel-2 and Landsat 8/9 imagery. It works well on mobile, needs only a free account, and now includes a 3D mode that turns georeferenced maps and imagery into explorable landscapes directly in the browser. It also markets itself as a free resource for journalists covering breaking news and investigations, on top of the original hobbyist and GIS-community use case.
14. buysatelliteimages.com (XRTech Group)
We're a commercial provider, so it's fair to say this plainly: most of what we sell isn't free. But two things genuinely are. Free archive search is built directly into our own portal: Sentinel-2 (10 m) and Landsat (30 m) imagery can be searched and viewed at no cost, side by side with paid sub-meter options, so you can compare before committing to anything. And every new tasking order comes with a free sample tile at the requested resolution, so you see real image quality over your actual area before you pay for the full capture. It's the same free-preview model other commercial providers use to let buyers evaluate quality before purchase, just built directly into the ordering flow instead of a separate step.
Search free archive imagery, or preview a paid tile first
Search Sentinel-2 and Landsat archive imagery on our portal at no cost, or request new tasking and get a free sample tile at your target resolution before you order the full capture.
Which free source has the highest resolution satellite imagery?
True open data, the kind released on a fixed schedule with no strings attached, tops out at 10 m with Sentinel-2 and 5-10 m with the newly public NISAR radar data. Anything sharper than that comes from one of three exceptions: a historical basemap archive like ArcGIS World Imagery Wayback, now reaching 30 cm globally and 15 cm in actively updated regions; a regional exception like Google Earth's 15 cm aerial coverage of major cities or Bing Maps' Bird's Eye imagery, which goes sub-10 cm across several hundred cities from an angled viewpoint; or a free sample or preview of otherwise-paid commercial imagery, like the native-resolution sample tile buysatelliteimages.com includes with every new tasking order. If a project genuinely needs sub-meter detail everywhere, not just in a handful of well-covered cities, a free sample tile or a paid commercial order is the realistic path, not an open archive.
Which free source has the most updated satellite view?
Update frequency and resolution trade off directly against each other. NOAA's GOES satellites and the Zoom.Earth viewer built on them refresh roughly every 10 minutes (with a further 20 to 40 minute lag before it's available to view), the fastest free cycle available, but at coarse, weather-satellite resolution (250 m to 2 km). NASA Worldview and GIBS sit in the middle, near real-time within about 3 hours, at resolutions from 250 m down to about 30 m depending on the sensor. Sentinel-1 and Sentinel-2 revisit every 5 to 6 days at 5-10 m, and NISAR covers the planet every 12 days at 5-10 m radar resolution. Disaster-triggered sources like the Vantor Open Data Program or a paid tasking order sit outside this pattern entirely, since they're captured on demand around a specific event or request rather than a fixed orbital schedule.
Free satellite imagery sources compared
| Source | Data type | Best resolution | Update frequency |
|---|---|---|---|
| Copernicus / Sentinel Hub | Optical + SAR | 5-10 m | Every 5-6 days |
| NASA-ISRO NISAR | SAR (radar) | 5-10 m | Every 12 days |
| USGS EarthExplorer (Landsat) | Optical | 15-30 m | Every 8-16 days |
| NASA Worldview / GIBS | Optical (multi-sensor) | ~30 m-250 m | ~Every 3 hours |
| Google Earth | Optical + aerial | Down to 15 cm (select cities) | Every few years, varies by area |
| Bing Maps | Optical + aerial (Bird's Eye) | Sub-10 cm (Bird's Eye, select cities) | Ongoing rolling updates, no fixed cycle |
| ArcGIS World Imagery Wayback | Optical basemap | Down to 15-30 cm | Periodic (150+ archived versions since 2014) |
| NOAA GOES / Zoom.Earth | Optical (weather) | 250 m-2 km | Every 10 minutes |
| Soar Atlas | Optical (Sentinel-2 / Landsat viewer) | 10-30 m | Every 5-16 days |
| buysatelliteimages.com | Optical + SAR (free tier) | 10 m free archive; native resolution on free sample tiles | 5-6 days free archive; on-demand for samples |
Tips for making the most of free satellite imagery sources
A few habits separate a quick, useful search from an afternoon lost in the wrong interface:
- Match the source to the need. A regional land-cover question suits Sentinel-2 or Landsat; a specific past disaster suits the Vantor Open Data Program; a live-developing storm suits Zoom.Earth or NASA Worldview.
- Check the resolution and license before you build a project around it. Free platforms often cap resolution, historical depth, or commercial usage rights, worth confirming before real work depends on the data.
- Narrow the search first. Set the area of interest, date range, and cloud-cover filter before browsing results; it turns a slow scroll through hundreds of tiles into a short list.
- Use built-in analysis tools where they exist. The Copernicus Browser's NDVI and compare tools, or Google Earth Engine, save real time over exporting raw imagery into separate GIS software for a simple index or comparison.
- Download selectively. Pull the specific tiles or bands needed rather than an entire dataset; most free sources charge nothing for the data but still meter your own storage and time.
- Credit the source. Most free platforms ask for attribution when their imagery is reused publicly; it costs nothing and keeps free data programs sustainable for everyone.
Free vs. commercial satellite imagery: when to upgrade
Free sources answer most broad, regional, or historical questions well, land-cover change, vegetation trends, they're built for exactly this. Commercial imagery earns its cost when a project needs three things free data can't reliably deliver at once: sub-meter detail everywhere (not just in a handful of well-covered cities), a specific, recent capture date rather than whatever the archive happens to have, or same-week tasking over a precise area. Our guide to choosing the right satellite image resolution walks through how to match resolution to a specific task once free data stops being enough, so the upgrade, when it happens, is spent on the resolution actually needed rather than the highest number available.
Key takeaways
- "Free" satellite imagery splits into open data (Sentinel, Landsat, NISAR, no purchase ever required) and free samples (a limited, free preview of otherwise-paid commercial imagery).
- NASA-ISRO's NISAR radar mission became publicly available in July 2026, offering free 5-10 m SAR data over every landmass every 12 days, the newest major addition to the free data landscape.
- True open-data resolution tops out around 10 m (Sentinel-2); sharper free imagery, down to sub-10 cm, comes from historical basemap archives like ArcGIS Wayback, Bing Maps' Bird's Eye imagery, or free commercial sample tiles, not raw open archives.
- Update frequency and resolution trade off directly: NOAA GOES and Zoom.Earth refresh every 10 minutes at coarse resolution, while Sentinel and NISAR revisit every 5-12 days at much finer detail.
- buysatelliteimages.com offers free Sentinel-2 and Landsat archive search built into its own portal, plus a free sample tile at native resolution with every new tasking order.
Frequently asked questions
What is the highest resolution satellite imagery available for free?
True open data tops out around 10 m with Sentinel-2 and 5-10 m with the newly public NISAR radar mission. Sharper free imagery exists but comes from exceptions: ArcGIS World Imagery Wayback reaches 15-30 cm in actively updated regions, Google Earth reaches 15 cm in select major cities via aerial imagery, Bing Maps' Bird's Eye imagery reaches sub-10 cm across several hundred cities from an angled viewpoint, and free sample tiles from commercial providers, including buysatelliteimages.com, can reach native commercial resolution for a limited preview area.
Which free satellite imagery source updates most often?
NOAA's GOES satellites and the Zoom.Earth viewer built on them refresh roughly every 10 minutes (with a further 20 to 40 minute lag before it's available to view), the fastest free update cycle available, though at coarse, weather-satellite resolution of 250 m to 2 km. NASA Worldview offers a sharper near real-time view, updated within about 3 hours, and Sentinel-1 and Sentinel-2 revisit every 5 to 6 days at much finer 5-10 m resolution.
Is Google Earth satellite imagery real-time?
No. Google Earth imagery is not real-time; most of it is anywhere from a few months to several years old, and coverage age varies significantly by location. Major cities and infrastructure sites are refreshed more often and at higher resolution, up to 15 cm in some areas, while less-visited regions may show imagery that is considerably older.
What is the difference between Google Earth and Bing Maps?
Both are free, need no account, and cover the entire globe. Google Earth's sharpest imagery reaches about 15 cm in major cities and includes a 3D globe view and Google Earth Engine for researchers. Bing Maps matches that with 15 cm aerial imagery in dense urban areas and adds Bird's Eye View, angled imagery at sub-10 cm detail across several hundred cities, a genuinely different perspective than the straight-down view most sources use.
Can I get free high resolution satellite images?
Yes, but usually through a free sample or preview rather than an open archive. Providers like buysatelliteimages.com offer free sample tiles at native commercial resolution, letting you evaluate real image quality before committing to a paid order. Open archives like Sentinel-2 top out at 10 m.
What is the difference between Sentinel-2 and Landsat?
Sentinel-2, from the European Space Agency, offers 10 m resolution with a 5-day revisit, while Landsat, from NASA/USGS, offers 30 m resolution (15 m panchromatic) with an 8 to 16-day revisit but over 40 years of historical archive, far longer than Sentinel-2's data, which only began in 2015. Sentinel-2 suits recent, detailed monitoring; Landsat suits long-term historical change analysis.
Is there a free source for radar (SAR) satellite imagery?
Yes. Sentinel-1, available through the Copernicus Data Space Ecosystem, offers free C-band radar data down to 5 m resolution. NASA-ISRO's NISAR mission, made public in July 2026, adds free L-band radar at 5-10 m resolution, covering every landmass every 12 days, an even deeper-penetrating option for vegetation and soil monitoring.
Does buysatelliteimages.com offer free satellite imagery?
Yes. Free archive search is built directly into the buysatelliteimages.com portal, covering Sentinel-2 (10 m) and Landsat (30 m) imagery at no cost. Every new tasking order also includes a free sample tile at the requested resolution over the actual area of interest, so image quality can be checked before paying for the full capture.
What is the best satellite imagery map for beginners?
Google Earth and Zoom.Earth are the easiest starting points, both are browsable with no account and no GIS knowledge required. For anyone who wants free analysis tools like NDVI alongside the imagery, the Copernicus Browser is a strong next step, and Soar Atlas is a good mobile-friendly option for casually comparing recent Sentinel-2 and Landsat captures.
Sources and further reading
- NASA Earthdata: NISAR L-band data release and mission overview, 2026
- ESA Copernicus: Data Space Ecosystem and Sentinel mission specifications
- USGS: EarthExplorer and Landsat program archive documentation
- Esri: ArcGIS World Imagery Wayback release notes and resolution specifications, 2026
- NOAA: Digital Coast Data Access Viewer and GOES satellite documentation
From free archive search to high-resolution tasking
Start with free Sentinel-2 and Landsat archive search, then request a free sample tile the moment a project needs sharper, more current detail than open data can offer.
