FTS Won't Open? Convert to QOI Instantly
Fast, instant FTS to QOI conversion. No signup required. Just drop your .fts file and get .qoi in seconds.
Batch Settings
FTS 文件通常承载着丰富的图像信息，但在某些场景下，我们可能需要更高效、更通用的图像格式。QOI（Quite OK Image）作为一种新兴的无损图像压缩格式，以其卓越的压缩比和极快的编解码速度，正受到越来越多开发者和用户的青睐。它不仅能有效减小文件体积，还能在不牺牲画质的前提下，大幅提升图像处理和传输的效率。无论是为了优化网站加载速度，还是为了在移动设备上实现更流畅的图片预览，抑或是为了满足游戏开发中对资源加载性能的严苛要求，将FTS转换为QOI都将是您明智的选择。我们的在线转换工具致力于提供便捷、高效的服务，让您轻松完成格式转换，体验QOI带来的便利。
- 微信图片分享优化
- 游戏素材快速加载
- 移动应用界面图像压缩
在中国大陆及东南亚地区，QOI格式因其对带宽的友好性，在社交媒体分享和轻量级应用中展现出巨大潜力，特别是在追求极致用户体验的场景下。
About FTS to QOI Conversion
Dealing with a FTS file that won't open on your device? You're not alone — FTS compatibility issues are one of the most common reasons people search for a file converter. FTS is a widely used file format.
The fix is simple: convert your FTS to QOI. QOI 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 FTS to QOI maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your FTS 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 QOI 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 FTS to QOI
- 1
Add your FTS file
Drag and drop your .fts file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick QOI output
Select .qoi 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 .qoi file. For batch jobs, download all at once as a zip.
What Happens When You Convert FTS to QOI
Your FTS file is decoded and re-encoded as QOI.
Your FTS file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in QOI format
The converted file is ready for download
Format Comparison
FTS
.fts file
| Extension | .fts |
| MIME Type | image/fits |
| Category | Image |
QOI
.qoi file
| Extension | .qoi |
| MIME Type | image/qoi |
| Category | Image |
Should You Convert FTS to QOI?
When to Convert
- ✓When you need a QOI file
Frequently Asked Questions
Why won't my FTS file open?
FTS files may not open if your device lacks the right codec or application. Converting to QOI — a more widely supported format — usually resolves this. QOI is a widely used file format.
Is it safe to convert FTS to QOI 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 FTS to QOI?
Converting FTS to QOI 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 FTS 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 FTS to QOI 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.