How to Bulk Export Fusion 360 Files to STEP, F3D and PDF — Complete Guide

The bulk export problem in Fusion 360

Autodesk Fusion 360 is a powerful cloud-based CAD tool, but it has one persistent frustration: there is no native bulk export feature. If you want to export your designs to STEP for a manufacturer, or back up your entire library as F3D files, you have to open each design individually and export it one at a time.

For small projects with a handful of files, this is manageable. For anyone with dozens or hundreds of designs — engineers, product designers, custom shops — it becomes a significant time sink. Exporting 100 files manually can take an hour or more of repetitive clicking.

This guide covers all the options available, from manual workarounds to full automation.

Which export formats does Fusion 360 support?

Fusion 360 can export to these formats, depending on your license tier:

Manual method (one file at a time)

Without an add-in, the only option is to export files one at a time:

1. Open the design in Fusion 360
2. Go to File → Export
3. Select your format (STEP, F3D, etc.) and output location
4. Click Export and wait for it to complete
5. Close the design and repeat for the next file

This works fine for a small number of files. For 50+ files it becomes impractical. There is no way to queue multiple files or select a folder for batch export natively.

Automated method: using a Fusion 360 add-in

The correct solution for bulk export is a Fusion 360 add-in — a plugin that runs inside Fusion and automates the export process using Fusion's API. Add-ins are installed from the Autodesk App Store and appear in your Add-Ins panel.

An add-in can iterate through every file in a project folder, open each one, export it in any number of formats, and close it — all without you clicking anything.

How ExportKit Pro works

ExportKit Pro is a bulk export add-in for Fusion 360. Here is the workflow:

1. Install from the Autodesk App Store. Search for "ExportKit Pro for Fusion" and install. The add-in appears in your Add-Ins panel on the next Fusion launch.
2. Select your project folder. Use the Project and Folder dropdowns to navigate to the folder you want to export. You can export at any level — an entire project, a subfolder, or just one specific folder.
3. Choose your output folder. Click Browse to select where exported files will be saved on your local drive. ExportKit Pro mirrors your Fusion folder structure — your files come out organized exactly the way they are in Fusion.
4. Select export formats. Check any combination of STEP, F3D, IGES, SAT, SMT, USD, and PDF. You can export to multiple formats in a single run.
5. Scan before exporting. Click Scan Folder to see a preview — file counts, estimated output, any unsupported files, and your trial/license status. Nothing is exported until you confirm.
6. Start Export. Click Start Export. A floating progress window shows the current file, pass (CAD formats or PDF drawings), exported/skipped/failed counts, and a Stop button. Walk away and come back when it's done.

Resume after interruption

If an export is stopped — by you, by a crash, or by anything else — re-running ExportKit Pro with the same settings automatically skips files that already exist in the output folder. You never have to start over from scratch.

Output folder structure

Exported files are saved to your output folder in a structure that mirrors your Fusion project:

Output folder/
  Hub Name/
    Project Name/
      Subfolder/
        DesignName.step
        DesignName.f3d
      Drawing/
        DrawingName.pdf

Incremental backup mode

ExportKit Pro includes an incremental backup mode that is particularly useful for engineers who work in Fusion daily and want to maintain up-to-date local exports of their library.

When incremental mode is enabled, ExportKit Pro tracks the Fusion version number of every file it exports, storing this in a small JSON index file in your output folder. On subsequent runs:

• Files whose version number has not changed since the last export are skipped automatically
• Files that have been updated in Fusion (new save, new version) are re-exported
• New files that were not present during the last run are exported for the first time

This means a daily backup of a 500-file project might only re-export 5-10 files that were actually changed — completing in under a minute instead of an hour.

Tips for large project libraries

Pre-export scan first. Always run the scanner before starting a large export. It will flag any files with unsupported formats, long path names, or other issues before the export begins — saving you from discovering problems halfway through a 2-hour run.

Export STEP + F3D together. The most common backup combination is STEP (for sharing/manufacturing) and F3D (for Fusion-native recovery). Since ExportKit Pro opens each file once, running both formats together costs almost no extra time compared to running just one.

Use incremental mode for regular backups. Set up a regular schedule — weekly or after major design sessions — and use incremental mode so only changed files are re-exported. This scales to any library size.

Large folders (500+ files) may take time to scan. Fusion's API scans files at a rate of roughly 50-100 per second. A 500-file project might take 5-10 seconds to scan. Fusion will appear unresponsive during the scan — this is normal.

Use the STOP.txt method for long runs. For very long exports, you can create a file named STOP.txt in your output folder at any time to trigger a clean stop after the current file finishes.