WEBP vs QOI — Comparison & Free Converter
Fast, instant WEBP to QOI conversion. No signup required. Just drop your .webp file and get .qoi in seconds.
Batch Settings
ウェブサイトやデジタルコンテンツ制作において、画質を保ちつつファイルサイズをいかに抑えるかは常に課題です。Googleが提唱するWebP形式は、その優れた圧縮率で多くの場面で利用されてきましたが、特定の環境やレガシーシステムでの互換性に頭を悩ませることも少なくありません。特に、QOI（Quite OK Image Format）は、そのシンプルさと高速な処理性能から、開発者コミュニティを中心に注目を集めています。この二つの形式の間で、お客様の貴重な画像をスムーズに、そして品質を損なうことなく変換できるよう、本ツールをご用意いたしました。大切な画像データを、それぞれの用途に最適な形でご活用いただくための一助となれば幸いです。
- 漫画・アニメ関連の画像配布
- ビジネス文書での図版掲載
- フォントデザインのプレビュー
日本のウェブ環境では、WebPの普及が進む一方で、一部の業務用システムやDTP（卓上出版）環境ではQOIのような新しい、あるいは特定のニッチな形式への対応が求められることがあります。特に、縦書きテキストを含むデザイン要素を扱う際には、画像形式の選択が最終的な表示品質に大きく影響します。
About WEBP to QOI Conversion
WEBP or QOI — which format should you use? The answer depends on your needs. Here's a quick breakdown.
WebP is Google's modern image format offering both lossy and lossless compression at 25-35% smaller sizes than JPG/PNG. It has mostly universal platform support. QOI is a widely used file format. It has common platform support.
So when should you convert WEBP to QOI? This conversion is ideal when you When you need a QOI file. This conversion helps you convert between formats quickly.
Converting WEBP to QOI maintains high quality with CocoConvert's optimised encoder settings.
If you've decided QOI is the right choice, CocoConvert makes the conversion effortless. Upload your .webp file, pick QOI, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert WEBP to QOI
- 1
Choose your WEBP file
Upload your .webp file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to QOI
Select .qoi from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large image files.
- 4
Get your QOI file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert WEBP to QOI
Your WEBP file is decoded and re-encoded as QOI.
Your WEBP 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
WebP
.webp file
| Extension | .webp |
| MIME Type | image/webp |
| Category | Image |
QOI
.qoi file
| Extension | .qoi |
| MIME Type | image/qoi |
| Category | Image |
Should You Convert WEBP to QOI?
When to Convert
- ✓When you need a QOI file
Frequently Asked Questions
Should I use WEBP or QOI?
It depends on your goal. WEBP preserves full quality. QOI preserves full quality. Choose based on whether file size or quality matters more for your use case.
Is QOI higher quality than WEBP?
Not necessarily. Converting WEBP to QOI maintains high quality with CocoConvert's optimised encoder settings. Quality depends on the compression type and settings, not just the format name.
Can I convert WEBP to QOI on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for WEBP to QOI?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for WEBP to QOI?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.