Which image formats are supported?

JPG, PNG, and WebP are supported. The MIME type in the output (such as image/png or image/webp) is set automatically based on the file you upload.

How do I turn a Base64 string back into an image?

In the reverse direction, paste your 'data:image/...;base64,...' string into the tool to preview it and download it as a file. The string must be a valid data URI for this to work.

How do I embed a Base64 image in HTML?

Paste the generated data URI into the src attribute of an tag: . The image then loads with the page without a separate file request.

Can I use a Base64 image in CSS?

Yes. Use the data URI inside background-image: background-image: url('data:image/png;base64,...'). This removes an extra HTTP request, which is handy for small icons and backgrounds.

Does it make sense to embed Base64 images in email?

It can work in some cases, but many clients like Gmail and Outlook block or strip Base64-embedded images in HTML email. Hosted image URLs are usually more reliable for email.

Why does Base64 increase the file size?

Base64 encodes binary data as text, so the output is roughly 33% larger than the original file. That makes Base64 a good fit for small images but not ideal for large photos.

When should I prefer Base64 embedding?

It's ideal for small icons, logos, and one-off graphics where you want to cut an extra network request. For large or frequently changing images, a separate file is more efficient because it keeps browser caching benefits.

Image base64 converter — Free Online

🖼️

Görsel Yükle

JPG, PNG, WebP, SVG, GIF

💡 Kullanım

HTML email: Görseli mail içine gömerek kullan (link yerine). Outlook/Gmail uyumu artar.
CSS: background-image: url('data:image/png;base64,...') — küçük ikonlar için ekstra HTTP request yok.
Web app: User upload preview için.
Sınır: Base64 dosyayı %33 büyütür. 100KB+ görseli base64 yapma — performans düşer.

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📖 How to Use

Upload document

Drag-drop or pick file.

Set options

Choose operation and parameters.

Process

Server runs the task.

Download

Get result in your format.

Frequently asked questions

Open the tool and upload your JPG, PNG, or WebP image; it instantly produces a string starting with 'data:image/...;base64,'. You can copy that string and paste it straight into your code.

Görsel ↔ Base64 Dönüşüm — Data URI

Görsel Yükle

💡 Kullanım

📖 How to Use

Frequently asked questions