Digital emissions guide
Digital Carbon Footprint
A digital carbon footprint is the emissions impact created by the devices, networks, and data centers behind your online activity. Use this guide to connect that broad idea to everyday browsing, work, and social habits.
The cloud is physical infrastructure
Every search, feed refresh, file sync, and meeting still depends on servers, networking equipment, and electricity somewhere in the background.
Habits matter more than isolated clicks
A single digital action is often tiny, but repeated patterns such as long meetings, autoplay feeds, and browser-heavy workdays add up over time.
Highest estimated emitters
Good pages to start with
Recommended pages
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Safari
Safari's footprint depends less on the browser brand than on open tabs, media-heavy pages, extensions, and the device running the session.
Firefox
Firefox browsing emissions come from active device energy, page complexity, media playback, extensions, and the web infrastructure behind each session.
Discord
Discord has not published an official per-hour carbon footprint, so this page models Discord from published digital-content research. The estimate depends on the mix of text chat, voice rooms, video calls, screen sharing, and always-open desktop sessions.
Slack
Slack is mostly a text and notification workflow, but its footprint rises with long active desktop sessions, file previews, huddles, clips, and video calls.
WhatsApp is usually lighter than video-first social apps because much of the activity is text and voice messaging, but photos, videos, backups, calls, and group activity still use devices, networks, and servers.
Facebook combines feed browsing, images, autoplay video, groups, ads, marketplace browsing, and messaging, so its footprint is higher than text-only social use but lower than continuous HD streaming.
LinkedIn is generally lighter than video-first social platforms, but its feed, messaging, ads, article pages, and job browsing still create emissions through device use and cloud delivery.
Gmail
Gmail's footprint is small per action, but inbox checking, search, attachments, spam filtering, storage, and device time add up across daily work.
Microsoft Outlook
Outlook combines email, calendar, search, attachments, notifications, and background syncing across desktop and mobile, giving it a small but steady daily footprint.
Google Meet
Google Meet video calls rely on efficient Google infrastructure, but the combined energy use of meetings still adds up quickly. If you're comparing Google Meet with Zoom or estimating video meeting CO2, the biggest factors are call length, participant count, cameras on, and device choice.
Snapchat
The constant transfer of image and video messages on Snapchat requires rapid server processing and mobile data usage.
TikTok
TikTok's footprint comes from video delivery, device energy use, and the time people spend scrolling through high-definition short-form video.
Every photo, Reel, and Story on Instagram requires server storage and global network transmission, contributing to your personal digital footprint.
Twitter / X
Refreshing your feed on X (formerly Twitter) triggers cloud databases and content delivery networks to serve media-heavy timelines instantly.
Microsoft Teams
Collaboration tools like Microsoft Teams require video processing, cloud storage for files, and network bandwidth for real-time communication.
Zoom
A Zoom call can avoid travel emissions, but it still has a carbon footprint of its own. If you're estimating Zoom call emissions, the main factors are meeting length, participant count, camera use, and the device each person joins from.
Google Chrome
Browser tabs and active background processes in Chrome consume CPU and RAM, translating to small but consistent energy usage throughout the day.
Reddit timelines are relatively lean, but the hosting of millions of communities and media-heavy posts contributes to digital emissions.
Side-by-side comparisons
Compare related apps and habits
FAQ
Common questions
What is a digital carbon footprint in plain language?
It is the emissions impact created by the devices, networks, and data centers that support your digital activity.
Which digital habits usually matter first?
Video, device choice, time-on-platform, and meeting behavior usually move the number more than isolated lightweight actions.