This conversion is asked for far more often than it is the right answer, so it is worth starting with the case against it — and then doing it properly for the situations where you have no choice.
Why JPEG is a poor fit for vector art
JPEG was designed for photographs. Its compression works by discarding fine detail that the eye tracks poorly, which is a great trade on a landscape full of gradients and noise, and a bad one on a logo.
Vector art is flat colour and hard edges — the two things JPEG handles worst. At lower quality settings you get visible blocking and coloured fringing around edges and text, the artefacts commonly called mosquito noise. On a photograph they hide in the detail; on a clean logo against white there is nothing for them to hide behind.
PNG is lossless, keeps transparency, and for this kind of content usually produces a smaller file as well. If nothing downstream is forcing your hand, SVG to PNG is the better conversion.
When JPEG is genuinely required
Some systems only accept it. Older print workflows, certain marketplace and catalogue uploaders, some document and email pipelines, and a surprising number of internal enterprise tools will take a JPEG and refuse everything else. That is a real constraint and it is not worth arguing with.
In those cases the way to minimise the damage is to render larger than you strictly need and let the destination downscale, since the artefacts are least visible when the edges are many pixels wide. Filum lets you pick 1×, 2×, 4×, or an exact pixel width — and because an SVG is instructions rather than pixels, rendering large costs nothing in sharpness. It was measured: a drawing rasterised at 4× is as sharp as the same drawing rendered natively at that size.
Transparency becomes white, and you should be told
JPEG has no alpha channel. Any transparent area in your drawing has to become a colour, and that colour is white. This is true of every JPEG converter, not a shortcoming of any one of them.
What differs is whether you find out. A transparent logo converted to JPEG comes back with a white rectangle behind it, and the usual way people discover this is by placing it on a coloured page and wondering what went wrong. Filum checks the drawing you actually supplied and says when it happened, with a pointer to SVG to PNG, which keeps transparency.
The details that carry over from SVG
The same three things apply as with any SVG rasterisation. A file with no width or height renders at its viewBox size, not at the 300-pixel default a browser reports — a converter that trusts that number silently gives you a small image of much larger artwork. Linked external images are not fetched, and the addresses involved are listed before you convert, because a file you were sent should not be able to make your browser contact a server named inside it. And text is drawn with fonts available to your browser, so convert text to outlines in your design tool if it must look exact.
The rendering happens in your own browser and the JPEG is built on your device. Nothing is sent anywhere.