Microsoft Visio to SVG converter

VSDX → SVG gives a diagram that stays sharp at any zoom in a web page or documentation site, at the price of labels that are shapes rather than text.

Converted with Office engine → Image engine · input deleted within 24 h
Free: 5 conversions a day · 5 MB each
Higher limits →

From real runs

What you get — and what changes

Element	Result	What happens
One SVG per page	Kept	The four-tab network diagram became a ZIP of four SVG files; each opens on its own in a browser, Inkscape or Illustrator.
Lines, connectors and fills	Kept	Connectors, box outlines and fills are SVG paths, so a 4K screen or a zoomed browser shows them as sharp as the original.
Labels	Changed	Text is converted to glyph outlines in the substitute font. It looks right everywhere without fonts installed, but you cannot select it or fix a typo in a text editor.
File size of dense pages	Changed	The rack elevation page, with hundreds of small slots, became a 997,297-byte SVG on its own; simple pages were 21,241 bytes.
Page background	Changed	Each SVG includes the white page rectangle, so it will not sit transparently on a dark-themed site without editing.
Visio shape data	Lost	Shape data fields, layers and hyperlinks are not written to the SVG; it carries geometry and colour only.

One SVG per page Kept
The four-tab network diagram became a ZIP of four SVG files; each opens on its own in a browser, Inkscape or Illustrator.
Lines, connectors and fills Kept
Connectors, box outlines and fills are SVG paths, so a 4K screen or a zoomed browser shows them as sharp as the original.
Labels Changed
Text is converted to glyph outlines in the substitute font. It looks right everywhere without fonts installed, but you cannot select it or fix a typo in a text editor.
File size of dense pages Changed
The rack elevation page, with hundreds of small slots, became a 997,297-byte SVG on its own; simple pages were 21,241 bytes.
Page background Changed
Each SVG includes the white page rectangle, so it will not sit transparently on a dark-themed site without editing.
Visio shape data Lost
Shape data fields, layers and hyperlinks are not written to the SVG; it carries geometry and colour only.

Sample conversions

Network diagram, four tabs

Input: 238,720-byte .vsdx with Structural, Physical, Logical and Rack pages.
Output: 306,237-byte ZIP of four SVGs in 0.3 s after the PDF step; the rack page alone is about 1 MB uncompressed.

Visio 2003 XML replication diagram

Input: 137,515-byte .vdx with Cyrillic labels, dashed arrows and a cloud shape.
Output: One 53,298-byte SVG; the Cyrillic labels render as outlines and the word merge wraps onto two lines as it does in the PDF.

A real Microsoft Visio → SVG run

We converted our Microsoft Visio sample (233 KB) with Office engine → Image engine on 2026-10-20. It took 2.4 s and produced a 299 KB SVG file, 1.3× larger than the input. The engine raised 3 warnings, listed below.

Input · sample.vsdx · 233 KB

ZIP with 64 parts

Archive parts: 64
first: [Content_Types].xml

Output · sample.zip · 299 KB

ZIP with 4 page images (sample-page-1.svg … sample-page-4.svg)

Archive parts: 4
first: sample-page-1.svg

Gradients become flat colours, hyperlinks are not kept, and shapes styled only by a Visio theme can be missing; compare page by page.
Text was converted to outlines, so it is not selectable or editable in the SVG.
4 pages written as one SVG each inside a ZIP.

Options and when to change them

max_pages: Set it to 1 when only the first tab is wanted as a single SVG instead of a ZIP.

Do it yourself

LibreOffice and PyMuPDF

bash

soffice --headless --convert-to pdf map.vsdx && python -c "import fitz; d=fitz.open('map.pdf'); open('page1.svg','w').write(d[0].get_svg_image())"

soffice can also write SVG directly, but for a multi-page drawing it packs every page into one file that most viewers show as overlapping pages.

Microsoft Visio to SVG by API or MCP

The HTTP API and the MCP server run the exact engine this page uses (Office engine → Image engine); the response carries the same warnings the web converter shows. Check support first with GET /api/v1/pairs?from=vsdx&to=svg.

curl

curl -X POST https://filetypeconverters.com/api/v1/convert \
  -H "Authorization: Bearer $FTC_API_KEY" \
  -F "file=@input.vsdx" -F "from=vsdx" -F "to=svg" \
  -F 'options={"width":0}' \
  --output output.svg

Options this engine accepts for Microsoft Visio → SVG

Key	Applies to	Type	Default
width	Writing SVG	number	0
height	Writing SVG	number	0
fit	Writing SVG	contain · cover · fill	contain
quality	Writing SVG	number	90
background	Writing SVG	string	#ffffff
stripMetadata	Writing SVG	boolean	true

API reference

When this is the wrong conversion

If you need to keep editing the diagram as shapes with connectors, import the .vsdx into draw.io instead; an SVG has no connector logic.
If the image goes into a slide or an email, VSDX → PNG is accepted everywhere and is usually smaller.

Microsoft Visio to SVG questions

Can I edit the text in the SVG?

Not as text. Labels are converted to outlines so the SVG looks the same on machines without the fonts. Edit the label in Visio or draw.io and export again.

Why is one of my SVG files so large?

Pages with many small shapes, such as rack layouts or floor plans, turn into thousands of paths. Gzip on the web server shrinks them a lot; otherwise use PNG for that page.

Does the SVG keep Visio layers?

No. Layers are flattened during conversion, and shapes on layers set not to print are left out of the SVG entirely.