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How to Convert G3 to SUN — Quick & Free

Fast, instant G3 (FAX) to SUN conversion. No signup required. Just drop your .g3 file and get .sun in seconds.

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Vous avez des documents G3 et souhaitez les convertir au format SUN ? Que ce soit pour archiver des télécopies administratives, intégrer des schémas techniques dans des applications spécifiques ou simplement adapter vos fichiers à des systèmes d'exploitation moins courants, la conversion de G3 vers SUN peut s'avérer nécessaire. Notre outil en ligne est conçu pour simplifier cette tâche, garantissant une transition fluide et une préservation optimale de l'intégrité de vos données. Fini les tracas liés aux incompatibilités de format : obtenez vos fichiers SUN rapidement et sans effort, prêts à être utilisés selon vos besoins professionnels ou personnels. Nous nous engageons à vous offrir une solution fiable et efficace pour toutes vos conversions.

  • Archivage de télécopies administratives (France)
  • Intégration de schémas techniques (Suisse)
  • Publication académique (Québec)

Au Québec, où l'usage du fax a longtemps été prédominant dans certaines administrations, la conversion de G3 vers des formats plus modernes comme SUN peut faciliter l'intégration de données historiques dans des systèmes contemporains, bien que le format SUN soit aujourd'hui moins répandu.

About G3 (FAX) to SUN Conversion

Short answer: yes, you can convert G3 to SUN online for free, and quality is well preserved with the right settings. Just upload your .g3 file to CocoConvert, pick SUN as the output, and click Convert. The whole process takes seconds.

Now for the details. G3 is a widely used file format. SUN is a widely used file format. Converting between these two formats lets you convert between formats quickly.

Your G3 file is decoded and re-encoded as SUN. Converting G3 to SUN maintains high quality with CocoConvert's optimised encoder settings.

CocoConvert runs entirely online — no software to install, no account to create. Your files are encrypted during upload (TLS), processed on isolated servers in Germany, and permanently deleted after 24 hours. It works in Chrome, Safari, Firefox, Edge, and all mobile browsers.

Need to convert more than one file? Free users can do 5 per hour. Pro gets 100 per hour with files up to 5 GB each.

How to Convert G3 (FAX) to SUN

  1. 1

    1. Upload G3

    Drop your .g3 file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.

  2. 2

    2. Select SUN

    Choose .sun from the output dropdown. Settings are pre-configured for best results.

  3. 3

    3. Convert

    One click. The server handles all the heavy lifting using FFmpeg and Sharp.

  4. 4

    4. Download

    Your .sun file is ready. Download it directly or get all files as a zip archive.

What Happens When You Convert G3 (FAX) to SUN

Your G3 file is decoded and re-encoded as SUN.

1

Your G3 file is uploaded and validated

2

The file is decoded (parsed into its raw data)

3

The data is re-encoded in SUN format

4

The converted file is ready for download

Format Comparison

.g3

G3 (FAX)

.g3 file

Extension.g3
MIME Typeimage/g3fax
CategoryImage
.sun

SUN

.sun file

Extension.sun
MIME Typeimage/x-sun-raster
CategoryImage

Should You Convert G3 (FAX) to SUN?

When to Convert

  • When you need a SUN file

Frequently Asked Questions

Is G3 to SUN conversion free?

Yes. CocoConvert offers free G3 to SUN conversion with generous daily limits — 25 minutes of processing time and up to 5 files per hour (250 MB each). Pro plans remove these limits.

How fast is G3 to SUN conversion?

Most files convert in 2–10 seconds depending on size. Large image files may take 30 seconds. Batch jobs process in parallel for maximum speed.

What happens to my files after conversion?

Your uploaded G3 file and the converted SUN file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.

Does converting G3 to SUN lose quality?

Converting G3 to SUN maintains high quality with CocoConvert's optimised encoder settings.

Can I convert SUN back to G3?

Yes, CocoConvert supports SUN to G3 conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.

Powered by — installed on our conversion workers
ImageMagick 7.1 (locked policy.xml)libheif 1.xlibjxl-tools 0.11.xLibRaw / dcraw_emu 0.21.xSharp 0.34.x (Node)

Versions are pinned in our worker Dockerfile and re-built via CI on every change.