Bandwidth Limit
Definition
A bandwidth limit — often sold as a transfer or egress allowance — caps outbound traffic. Every successful response adds its body size to a running total, and that total resets when the billing period rolls over. The figure that matters is file size multiplied by number of downloads, never file size alone: a 2 MB image fetched 5,000 times is 10 GB, while a 2 GB archive nobody opens is zero. This is the limit most often mistaken for the storage quota, which measures what you keep rather than what you send, and the two can be generous or mean quite independently of each other. Partial transfers count as well, so an abandoned video download still spends whatever arrived before the visitor closed the tab.
Why It Matters
Running out of traffic takes your file offline at the worst possible moment, because you only run out when something is working. A product launch, a press mention or one busy forum hotlinking your image can spend a month's allowance in an afternoon, and what the next visitor sees is an error page rather than your work. The counter also rewards small improvements out of all proportion: converting a 1.8 MB hero image to WebP at 240 KB cuts that file's traffic by 87 per cent, which is the difference between 9 GB a month and 1.2 GB. Compression and caching are almost always cheaper than the next plan up.
How It Works
The host sums the Content-Length of every response it serves for your account, or measures the bytes actually written where no length was declared in advance. A range request adds only the range that was served, and a 304 Not Modified adds next to nothing, which is why caching headers have such a direct effect on the monthly figure. Past the cap, providers diverge: some throttle, some answer 509 Bandwidth Limit Exceeded or 429, and some simply bill the overage and tell you afterwards. A CDN cuts the traffic reaching your origin but not the traffic billed to you, since the edge is still sending those bytes on your behalf. Cookie-free edge analytics normally report the same total broken down by file, referrer and country, which is how you find out where it all went.
Real-World Example
A musician offers a 40 MB live recording as a free download at northgate-live.99helpers.site. A playlist mention sends 600 people to it over one weekend — around 24 GB of traffic from a single file. She re-encodes the set at 128 kbps, bringing it to 9 MB, and adds a line offering the lossless version by request. The same weekend would now cost about 5.4 GB, and the link stays up through the following one.
Common Mistakes
- ✕Judging a plan by its storage figure — disk is usually the cheap half, and traffic is what actually runs out
- ✕Serving the full-size original to everyone — a 4,000-pixel photo sent to a phone screen spends four times the traffic for no visible gain
- ✕Forgetting that other people's embeds are on your bill — a hotlinked file is charged to you every time their page loads
Related Terms
Storage Quota
A storage quota is the total volume of data your account may hold at any one moment. It is a standing measurement of what sits on disk, and downloading a file does not change it.
Hotlinking
Hotlinking is when another site embeds a file using its address on your host, so every visitor to their page downloads it from you. They get the image; you get the traffic bill.
Free File Hosting
Free file hosting is a plan that costs nothing to upload and serve files, paid for in limits rather than money. The useful question is never whether it is free, but which of storage, traffic, file size, retention and branding has been capped to make it so.
CDN
A content delivery network: a set of servers spread across the world that keep copies of your files and answer each visitor from somewhere close to them. It is the service; the machines it runs on are its edge network.
Cache-Control
The HTTP response header that tells browsers and caches whether they may keep a copy of a file, for how long, and who is allowed to. It is the single biggest lever over how fast a site feels on a second visit.
Put a file online in seconds
Drop in a document, an image, a page or a whole static website and share the link — free, with no build step and no server to set up.
Host a file free →