Convertim
Image ConvertersFree Portable Image Converter for Windows
Free portable image converter for Windows. No cloud. No installation.
Christian MicóLaunched July 2, 2026· Week 18
About
Convertim is a free image converter for Windows designed around privacy and simplicity. Convert images between JPG, PNG, WebP, AVIF, HEIC, TIFF, GIF, SVG and other popular formats without uploading anything to the cloud. Everything runs locally on your computer. No installation, no accounts, no ads and no telemetry. Whether you need to convert a single image or process hundreds through batch conversion or the command line, Convertim adapts to your workflow instead of forcing you to change it. Features include: • Local image conversion • Batch processing • Image resizing • Compression and optimization • Watermarks • Drag & drop support • Graphical interface and CLI • Portable executable • Dark and light themes Built by ancer.
From the founder
Christian MicóWho is Convertim for?
Converting a folder of images meant picking a compromise. Free online converters make you upload your files, show ads and cap how many you can do at once, which hurts when the photos are private or there are hundreds of them. Desktop tools either want an install and an account, or serve only one audience: friendly apps with no command line, or command-line tools like ImageMagick that most people won't touch. So people ended up juggling a website for quick jobs and a script for everything else.
What problem does Convertim solve?
Converting a folder of images meant picking a compromise. Free online converters make you upload your files, show ads and cap how many you can do at once, which hurts when the photos are private or there are hundreds of them. Desktop tools either want an install and an account, or serve only one audience: friendly apps with no command line, or command-line tools like ImageMagick that most people won't touch. So people ended up juggling a website for quick jobs and a script for everything else.
How is Convertim different from the alternatives?
Converting a folder of images meant picking a compromise. Free online converters make you upload your files, show ads and cap how many you can do at once, which hurts when the photos are private or there are hundreds of them. Desktop tools either want an install and an account, or serve only one audience: friendly apps with no command line, or command-line tools like ImageMagick that most people won't touch. So people ended up juggling a website for quick jobs and a script for everything else.
How much does Convertim cost?
Free. No ads, no account, no trial and no paid version: every feature, GUI and CLI alike, is in the free download. Development is funded by donations on Ko-fi from people who find it useful.
What's next for Convertim?
Not answered yet.
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