ERF to AVIF Converter
Convert ERF to AVIF online for free. Fast, secure, and high-quality conversion with no sign-up or software required.
Maximum file size is 1GB
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Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
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.
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.
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.
What is an ERF file?
The ERF (Epson Raw Format) is a proprietary raw image format generated by Seiko Epson digital cameras, specifically the R-D1 series. Structured as a TIFF-compliant file, it stores unprocessed sensor data directly from the CCD or CMOS image sensor, preserving high dynamic range and color fidelity prior to demosaicing. The format typically utilizes lossless compression or uncompressed storage to maintain data integrity for post-production, requiring specific Bayer interpolation algorithms to render viewable images.
How to open an ERF file
ERF files are not natively viewable in standard Windows or macOS image viewers without codec extensions. Professional post-processing software such as Adobe Photoshop (via Camera Raw), Adobe Lightroom, and Capture One provide full support for decoding and editing the raw data. For free alternatives, users can utilize RawTherapee or Darktable, which contain the necessary libraries to interpret the specific sensor data from Epson hardware.
ERF Technical Info
- Full Name
- Epson Raw File
- Developed By
- Seiko Epson Corporation
- Initial Release
- 2004
- MIME Type
- image/x-epson-erf
What is an AVIF file?
The AVIF (AV1 Image File Format) is an open, royalty-free raster image container specified by the Alliance for Open Media (AOMedia) in ISO/IEC 23000-12. It encapsulates image sequences or still images compressed with the AV1 video codec within the HEIF (High Efficiency Image File Format) container structure. AVIF supports high dynamic range (HDR) utilizing Perceptual Quantizer (PQ) or Hybrid Log-Gamma (HLG) transfer functions, wide color gamut (WCG), and 4:2:0, 4:2:2, or 4:4:4 chroma subsampling, offering superior compression efficiency over JPEG and WebP.
How to open an AVIF file
Native support for AVIF is available in modern web browsers including Google Chrome (v85+), Mozilla Firefox (v93+), and Safari (v16+). For local viewing, Windows 10 and 11 require the installation of the free 'AV1 Video Extension' from the Microsoft Store to enable support in the Photos app and File Explorer. macOS 13 (Ventura) and iOS 16 provide system-level support. Graphics editors like GIMP, Paint.NET, and Adobe Photoshop (via plugin) can also decode and edit these files.
AVIF Technical Info
- Full Name
- AV1 Image File Format
- Developed By
- Alliance for Open Media
- Initial Release
- 2019
- MIME Type
- image/avif
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The fastest way to convert any file
Purpose-built for speed, privacy, and breadth of format support.
Convert ERF to AVIF in seconds
Every ERF to AVIF 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.
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Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.
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Developer API
Convert ERF to AVIF via API
Automate ERF to AVIF conversions in three steps: create a job, upload your file, then poll for the result.
# 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": "erf-to-avif",
"tasks": {
"upload-file": {
"operation": "import/upload"
},
"convert": {
"operation": "convert",
"input": "upload-file",
"output_format": "avif"
},
"export-result": {
"operation": "export/url",
"input": "convert"
}
}
}'
# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.erf
# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
-H "Authorization: Bearer YOUR_API_KEY"Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.