Does Vector Express Offer an API for Vector Conversion?

Yes. Vector Express states on its homepage that it offers a free API alongside its web-based converter, and it points visitors to a pricing page and documentation for more information. That means you can automate vector conversion or embed it in another application instead of uploading files by hand. The main caveats: the site does not spell out API rate limits, authentication, or endpoint details on the homepage itself, so you need to read the docs, and "free" is stated for the conversion service generally—check the pricing page before assuming the API tier you need carries no cost.

What the API is for

The API is aimed at the same job as the web converter: turning one vector format into another without manual uploads. Typical uses include:

• Batch-converting a folder of drawings in a build or data pipeline
• Adding format conversion to a design tool, print workflow, or CAD-adjacent app
• Converting files on a schedule rather than one at a time through the browser

If your need is a one-off conversion, the web interface is simpler. The API matters when you want repeatable, programmatic conversion.

Supported formats

The homepage lists the formats you can convert from:

The site presents these as the input formats for conversion. It does not state on the homepage whether the API supports a different or narrower set than the web tool, so confirm the exact input/output matrix in the documentation before building around a specific pair.

How to get started

1. Go to vector.express and find the links to the pricing page and the docs (the homepage references both).
2. Read the docs to learn the request format, authentication method, and available endpoints.
3. Check the pricing page to confirm what the API costs and whether there are usage limits.
4. Test with a single file in a format you already know converts correctly on the web tool, then scale up.

Expected result: a working request that returns a converted file, which you can then wire into your own code.

Common sticking points

• JavaScript required. The site notes you need JavaScript enabled to run the app, so the web interface won't work in a plain script-fetch context—use the API for automation instead.
• Docs are the source of truth. Because the homepage only advertises the API's existence, treat any assumption about parameters or limits as unverified until you've read the documentation.
• Pricing is separate from the free claim. The homepage says conversion is free and also links to a pricing page; read it rather than assuming every API use case is free.
• Format support may differ. Don't assume the API accepts every format the web converter lists without checking.

Bottom line

Vector Express does offer an API for vector conversion, and it's worth using if you need automated or integrated conversion across formats like AI, CDR, DWG, DXF, EPS, HPGL, PDF, PLT, PS, and SVG. Before committing, read the docs for the technical details and the pricing page for cost and limits—those two pages, not the homepage, will tell you whether it fits your project.