Skip to content

EOT to OTF Converter

Convert EOT to OTF online for free. Fast, secure, and high-quality conversion with no sign-up or software required.

  • Free to use
  • No file stored beyond 1 hour
  • Encrypted over TLS 1.2/1.3
  • No watermarks

Drag and drop your files here or click to upload.

Maximum file size is 1GB

Like RunConvert? Set us as a preferred source on Google.

Add to Preferred Sources

How it works

Three steps to your converted file

Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.

  1. 01

    Upload your file

    Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.

  2. 02

    Choose an output format

    Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.

  3. 03

    Convert & download

    Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.

EOT to OTF

Why convert EOT to OTF?

EOT is a lossless format, while OTF is an uncompressed format. OTF opens on almost any device, while EOT often needs extra software.

  • Opens everywhere

    OTF opens in windows, macOS and Linux install it directly, while EOT needs internet Explorer only.

  • Where OTF works best

    Professional fonts with advanced typography.

EOT vs OTF: what's the difference?

PropertyEOTOTF
TypeFontFont
CompressionLossless (no quality loss)Uncompressed (largest files)
Opens inInternet Explorer onlyWindows, macOS and Linux install it directly
Best forWeb fonts for very old Internet ExplorerProfessional fonts with advanced typography

What is an EOT file?

Embedded OpenType

Developed By
Microsoft
Initial Release
1997
MIME Type
application/vnd.ms-fontobject

The Embedded OpenType (EOT) format is a legacy font file standard developed by Microsoft in 1997 specifically for use with Internet Explorer. It functions as a compact wrapper for TrueType (TTF) and OpenType (OTF) fonts, utilizing MicroType Express compression to reduce file size for web transmission. EOT files employ a proprietary structure that includes embedding permission flags to prevent unauthorized usage, adhering to Digital Rights Management (DRM) protocols. While submitted to the W3C in 2008, it was eventually superseded by WOFF, though it remains relevant for supporting older browser versions like IE8 and below.

How to open an EOT file

EOT files are designed exclusively for web rendering by the Trident layout engine found in Microsoft Internet Explorer. They are not intended for direct opening or installation on a local operating system like Windows or macOS. To view or edit the glyph data contained within an EOT file, users must convert it back to a TTF or OTF source format using specialized font engineering software such as FontForge or online conversion utilities.

What is an OTF file?

OpenType Font

Developed By
Adobe Systems, Microsoft
Initial Release
1996
MIME Type
font/otf

The OpenType Font (OTF) format is a cross-platform scalable font standard developed jointly by Adobe and Microsoft in 1996 to supersede TrueType and PostScript Type 1 formats. OTF files encapsulate outline data using either Compact Font Format (CFF) based on cubic Bézier curves (PostScript) or TrueType outlines based on quadratic Bézier curves. The format adheres to ISO/IEC 14496-22 (Open Font Format) standards and supports advanced typographic features such as ligatures, glyph substitution, and alternate characters via feature tables (GSUB, GPOS).

How to open an OTF file

OTF files enjoy native support across all major operating systems, including Windows, macOS, Linux, Android, and iOS. Users can install the font by double-clicking the file to launch the OS-native Font Viewer (Windows) or Font Book (macOS) and selecting the install option. For editing glyph paths or kerning metrics, vector graphic editors like Adobe Illustrator or dedicated typography software such as Glyphs and FontLab are required.

More tools

More free font tools

All font conversions

Why RunConvert

The fastest way to convert any file

Purpose-built for speed, privacy, and breadth of format support.

  • Convert EOT to OTF in seconds

    Every EOT to OTF conversion runs on our servers, so your device stays fast and the output quality stays intact.

  • Fast, cloud-powered

    No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.

  • Secure & private

    Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.

  • Free - no account needed

    Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.

Developer API

Convert EOT to OTF via API

Automate EOT to OTF conversions in three steps: create a job, upload your file, then poll for the result.

Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.

# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "tag": "eot-to-otf",
    "tasks": {
      "upload-file": {
        "operation": "import/upload"
      },
      "convert": {
        "operation": "convert",
        "input": "upload-file",
        "output_format": "otf"
      },
      "export-result": {
        "operation": "export/url",
        "input": "convert"
      }
    }
  }'

# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.eot

# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
  -H "Authorization: Bearer YOUR_API_KEY"

Like RunConvert? Set us as a preferred source on Google.

Add to Preferred Sources