TIFF Won't Open? Convert to G3 Instantly
Fast, instant TIFF to G3 (FAX) conversion. No signup required. Just drop your .tiff file and get .g3 in seconds.
Batch Settings
TIFF文件以其高质量和无损特性，在印刷和专业图像处理领域广受欢迎。然而，当您需要将这些高质量图像用于传真传输或一些特定旧系统时，TIFF庞大的体积和复杂的结构就成了障碍。G3传真格式（Group 3 Fax）作为一种高效的图像压缩标准，特别适合黑白文档的快速传输，它能将大尺寸的TIFF文件精简到易于发送和接收的大小，同时保持文本内容的清晰可读性。我们的在线转换工具，正是为了解决这一痛点而生。无论是为了兼容传统设备，还是优化传输效率，都能帮助您轻松将TIFF转换为G3格式，让您的工作流程更加顺畅。
- 老旧传真机兼容
- 银行或政府机构文件传输
- 低带宽网络环境共享
在大陆及港台地区，许多传统办公系统和传真设备仍广泛使用G3格式。将其用于微信等移动平台分享时，建议先转换为G3再打包，以适应部分系统对文件大小和格式的限制。
About TIFF to G3 (FAX) Conversion
Dealing with a TIFF file that won't open on your device? You're not alone — TIFF compatibility issues are one of the most common reasons people search for a file converter. TIFF is an uncompressed or losslessly compressed format favoured in print, publishing, and professional photography.
The fix is simple: convert your TIFF to G3. G3 is a widely used file format. This conversion lets you convert between formats quickly, solving the problem in seconds rather than hours of troubleshooting.
Converting TIFF to G3 maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your TIFF file on secure servers in Germany — upload, convert, download. Your files are encrypted via TLS and automatically deleted within 24 hours. No account needed, no software to install, and it works on any device with a browser.
This conversion is ideal when you When you need a G3 file.
The conversion engine behind CocoConvert uses FFmpeg, Sharp, and qpdf — the same open-source libraries trusted by Netflix, YouTube, and enterprise platforms. Pro users can batch convert up to 100 files at once.
How to Convert TIFF to G3 (FAX)
- 1
Add your TIFF file
Drag and drop your .tiff file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick G3 output
Select .g3 as the target format. CocoConvert automatically applies the best quality settings for this conversion.
- 3
Start conversion
Hit the Convert button. The image engine processes your file server-side — no CPU drain on your device.
- 4
Save your file
Once done, download your .g3 file. For batch jobs, download all at once as a zip.
What Happens When You Convert TIFF to G3 (FAX)
Your TIFF file is decoded and re-encoded as G3.
Your TIFF file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in G3 format
The converted file is ready for download
Format Comparison
TIFF
.tiff file
| Extension | .tiff |
| MIME Type | image/tiff |
| Category | Image |
G3 (FAX)
.g3 file
| Extension | .g3 |
| MIME Type | image/g3fax |
| Category | Image |
Should You Convert TIFF to G3 (FAX)?
When to Convert
- ✓When you need a G3 file
Frequently Asked Questions
Why won't my TIFF file open?
TIFF files may not open if your device lacks the right codec or application. Converting to G3 — a more widely supported format — usually resolves this. G3 is a widely used file format.
Is it safe to convert TIFF to G3 online?
Yes. CocoConvert encrypts your file via TLS, processes it on isolated servers in Germany, and permanently deletes it within 24 hours. Your files are never shared or analysed.
Will I lose quality converting TIFF to G3?
Converting TIFF to G3 maintains high quality with CocoConvert's optimised encoder settings. CocoConvert uses high-quality encoder defaults to preserve as much fidelity as possible.
How large can my TIFF file be?
Free users can convert files up to 250 MB each. Pro users get a 5 GB limit per file, and Business API users have custom limits.
Can I convert TIFF to G3 on my phone?
Absolutely. CocoConvert works in any modern browser — iOS Safari, Android Chrome, and all desktop browsers. No app required.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.