Skip to content
ZyncTools
/

Image to Base64 / Data URI

Turn an image into a Base64 data URI for CSS, HTML or JSON.

1

Input

2

Settings

3

Run

4

Results

Results will appear here once you run the tool.

About Image to Base64 / Data URI

Turn an image into a Base64 data URI for CSS, HTML or JSON. Drop a file into Image to Base64 / Data URI or click to browse, then choose your settings.

Your files stay on your device. ZyncTools has no upload step: the file is read in your browser, processed there, and handed straight back to you. There is no account, no watermark and no size cap beyond what your own device can hold.

Settings. Image to Base64 / Data URI gives you control over output as and wrap lines at.

Also known as: base64, data uri, image, inline, embed.

How to use Image to Base64 / Data URI

  1. Add your input. Drop your file onto the upload area, or click it to browse. The file is read in your browser and never uploaded.
  2. Choose your settings. Adjust output as, wrap lines at to suit what you need.
  3. Run the tool. Press Run. Processing happens on your own device, so the time it takes depends on your machine rather than a queue.
  4. Save the result. Copy the output, or press Download to save it. Nothing is kept once you close the tab.

Frequently asked questions

Are my files uploaded when I use Image to Base64 / Data URI?

No. Image to Base64 / Data URI runs entirely inside your browser. Your file is read locally, processed on your own device, and handed straight back to you. You can confirm this yourself: open your browser's developer tools, watch the Network tab, and run the tool — no request carries your data anywhere.

Is Image to Base64 / Data URI free?

Yes, completely. No account, no sign-up, no watermark on your output, and no cap on how many times you can use it. The project is open source under the AGPL licence.

Is there a file size limit?

There is no server limit, because nothing is uploaded. The practical ceiling is your device's memory — on a modern laptop, files up to a few hundred megabytes are comfortable, while phones handle less. If a tab becomes unresponsive, the file was too large for the memory available.

Does Image to Base64 / Data URI work offline?

Mostly. The site caches itself after your first visit, so it keeps working without a connection. Tools that need a specialised library — PDF editing, OCR, QR codes, MP3 encoding — need a connection the first time you run them, then that library is cached too.

Related converters tools

Base64 Encoder / Decoder Encode text to Base64 or decode it back, with URL-safe support. URL Encoder / Decoder Percent-encode text for URLs, or decode an encoded string. HTML Entity Encoder / Decoder Escape HTML special characters, or turn entities back into text. Number Base Converter Convert numbers between binary, octal, decimal, hex and any base up to 36. Text ⇄ Binary / Hex Convert text to binary, hexadecimal or decimal byte values, and back. Colour Converter Convert a colour between HEX, RGB, HSL, CMYK and named values.