HeroTools / Image
Local · Private · Free

Image to Base64

Batch-convert images into Base64 with ready-to-paste data URI, HTML, CSS and Markdown snippets — or decode Base64 back into an image file. Nothing is uploaded.

⬆
Drop images here
or click to browse — PNG, JPG, WebP, GIF, SVG · multiple files OK
🔒 Files never leave your browser
Re-encoding can shrink the output a lot.
JPG & WebP re-encoding only.
Optional — downscale when re-encoding.
—
🔒 Decoding happens on your device — nothing is sent anywhere.
Paste Base64 to preview
Decoded image preview

Inline images, zero upload

Image to Base64 reads your files with the browser's own FileReader and turns them into Base64 — with one-click snippets for data URIs, HTML <img> tags, CSS background-image rules and Markdown. Optionally re-encode to PNG, JPG or WebP with a quality slider to keep the payload small, and get a size warning when an output passes 1 MB. The reverse tab decodes any Base64 or data URI back into a downloadable image with automatic type detection. No server, no limits, completely free.

About Image to Base64

Image to Base64 is a free, private image tool that runs entirely in your web browser. Convert images to Base64 data URIs (with HTML/CSS/Markdown) and back — locally. Because everything happens locally on your device, your files and data are never uploaded to a server, there is no sign-up or installation required, and it keeps working offline. It is handy for image to base64, data uri, base64 image, encode. Like every HeroTool by Digital Heroes, Image to Base64 is 100% free with no limits.

How to use Image to Base64

  1. Open Image to Base64 — it runs entirely in your browser, with no signup.
  2. Drag and drop your file (or click to browse) — it never leaves your device.
  3. Adjust the options to match exactly what you need.
  4. Copy or download your result — it is free, and your data stays on your device.

Frequently asked questions

Is Image to Base64 free?

Yes — Image to Base64 is completely free for everyone. No sign-up, no account and no usage limits.

Is it private? Are my files uploaded anywhere?

No. Image to Base64 runs entirely in your browser on your own device, so your data never leaves your computer and nothing is uploaded to a server.

Does it work offline?

Yes. HeroTools is a Progressive Web App — once the page has loaded it keeps working offline, and you can install it as an app from your browser.

Do I need to install anything or create an account?

No. Just open the page and start using it. Installing it as an app is optional and only adds offline convenience.

What does Image to Base64 do?

Convert images to Base64 data URIs (with HTML/CSS/Markdown) and back — locally.

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