Developer tool

Image to Base64 Encoder

Convert any image to a Base64 data URI string. Free, private, no data stored.

IMG BASE64
PrivConvert
Privacy-first conversion
No files stored
In-memory processing
Deleted instantly
No sign-up needed

Complete the security check to begin

Embed images directly in your code

Need to inline an image in HTML, CSS, or a JSON payload? Get a ready-to-paste data URI string - no external file hosting needed.

  • Data URI format - output includes the full data:image/...;base64, prefix
  • All formats - works with PNG, JPG, WebP, SVG, GIF, and more
  • Copy and paste - download the .txt file and paste into your code

How to Convert IMG to BASE64 Online

You can convert IMG to BASE64 right in your browser in under a minute. Your file is processed privately in memory and deleted the instant the BASE64 is ready.

1
Upload your IMG file

Drag and drop your file into the upload area, click to browse your device, or paste a URL to a file hosted online. You can upload files up to 250 MB and batch convert up to 20 files at once.

2
Automatic conversion

Once uploaded, the conversion from IMG to BASE64 starts automatically. The process runs entirely in an isolated environment - your data never leaves the secure pipeline.

3
Download your BASE64 file

Your converted file is ready instantly. Click the download button to save it to your device. The file is deleted from memory immediately after download.

Private by design, not as an afterthought

Most online converters upload your files to a server, keep them for days, and may mine them for AI training or resale. PrivConvert was built the opposite way — around your privacy.

Fast in-memory processing

Each job runs in an isolated in-memory sandbox, so most conversions finish in seconds instead of waiting in a queue.

Nothing is stored

We never keep a copy. Once your BASE64 is delivered, both the original and the result are gone — there is nothing left to leak or misuse.

Isolated sandbox

Every conversion runs in its own locked-down process with no network access, so files can never leak or interfere with one another.

No human ever sees it

Your files are handled entirely by automated code. No staff, partner or AI model ever reads, stores or trains on your data.

IMG vs BASE64 - Format Comparison

FeatureIMGBASE64
File extension.img.base64
Supported by PrivConvertYes (as input)Yes (as output)
Privacy-safe conversionIn-memory, zero storage
Max file size250 MB per file
Batch supportUp to 20 files simultaneously

A converter you do not have to worry about

PrivConvert handles thousands of conversions every day for developers, designers and privacy-conscious people who need a file converted without handing over a permanent copy.

250 MB Max file size
450+ Conversion tools
0 sec File retention
100% Free to use

Frequently Asked Questions

What is Base64 encoding?
Base64 converts binary image data into a text string that can be embedded directly in HTML, CSS, or JavaScript without needing a separate image file.
When should I use Base64 images?
Base64 is ideal for small images like icons, logos, and UI elements where you want to reduce HTTP requests by embedding the image directly in code.
Does Base64 increase file size?
Yes, Base64 encoding increases the data size by about 33%. It is best used for small images where the convenience outweighs the size increase.
What format is the output?
You get a complete data URI string (data:image/png;base64,...) that you can paste directly into an HTML img src or CSS background-image.
Is this tool really free?
Yes, completely free with no hidden fees, no watermarks, and no sign-up required. You can convert as many files as you need.
Are my files private and secure?
Absolutely. Every conversion runs in an isolated, in-memory process. Your files never touch the disk, are never stored or shared, and are deleted from memory the moment your download is ready.

Further Reading