“Can you send the vector?” often arrives late in a manual project—after dozens of figures have already been exported as PNG. The request sounds like a simple format change, but the right answer depends on what the next person needs to do with the illustration.
PNG and SVG are both useful. The important distinction is not “old versus modern.” It is fixed pixels versus editable geometry.
Choose PNG when the figure is already approved
A PNG is a raster image: a fixed grid of pixels. It works well when:
- the figure is final and will not be structurally edited;
- the target size is known;
- the destination is a web page, support article, presentation, or office document;
- predictable appearance is more important than object-level editing;
- the publishing system has inconsistent SVG support.
Export at the size required by the layout, with enough resolution for print or zoom. A clean PNG is easier to hand off because almost every tool can display it correctly.
The limitation appears when the same image must be enlarged far beyond its export size, or when someone needs to move one arrow, change all line weights, or recolor a single part. Pixels do not know which black marks are outlines and which are callouts.
Choose SVG when the drawing is still a working asset
SVG stores shapes, paths, lines, and styles. It is the better choice when:
- the illustration must scale from a small label to a full page;
- a designer needs to edit strokes, callouts, colors, or individual parts;
- the same source will feed several document sizes;
- thin technical linework must stay crisp;
- localization may move or replace labels later.
Not every SVG is equally editable
The .svg extension only describes the container. Inside it, you may find three very different things:
- Real strokes: a visible line is represented by one path with a stroke width. This is ideal for technical line art.
- Filled outlines: a visible line has been traced as a thin closed polygon. It scales cleanly, but changing the line weight is difficult.
- An embedded bitmap: the SVG simply wraps a PNG or JPEG. It offers almost none of the editing advantage people expect from vector output.
Open the file in Illustrator, Inkscape, or another vector editor and select a line. If the stroke weight is editable as a property, the file contains usable stroke geometry. If every line selects as a filled shape—or the whole drawing selects as one image—you do not have the workflow you expected.
A simple decision rule
Use PNG for placing and publishing. Use SVG for editing, scaling, and reusing. When possible, keep both: SVG as the master and a correctly sized PNG as the delivery copy.
There are also practical exceptions. Some email editors and content platforms strip SVG, so PNG is safer. Some print workflows prefer PDF or EPS generated from the vector master. Safety-critical documents may require a controlled, flattened delivery file even when the internal source remains editable.
Where ManualFig AI fits
ManualFig AI can produce manual-ready raster figures and convert approved results into SVG for downstream editing. The useful check is whether the converted linework behaves as strokes, while intentionally solid elements such as arrowheads may remain filled shapes.
Generate a manual figure and export it for your workflow with ManualFig AI.
Do not wait until the final layout to decide. Ask at the start: Who will edit this figure, how large might it become, and which publishing tools must accept it? Those three answers usually make the format choice obvious.
Top comments (0)