Image to Base64
Encode an uploaded image into a base64 data URI.
How to use Image to Base64
Free image to base64 tool: load a picture and get a copy-ready data URI for CSS or HTML.
Open Image to Base64 on toolpermarket, then enter the values you want to work with.
In the Image file field, choose the picture to encode. The output keeps the original format, so a PNG stays a PNG string.
Press Copy to compute the result. The output appears immediately below the form. Tweak any field and run it again to check a different scenario.
Read the result and use it as needed. If the number looks off, re-check your inputs and run it again — the math is deterministic, so the same entries always return the same answer.
Worked example. Load a small icon, copy the data URI it produces, and paste it straight into CSS or an <img src> to embed the image with no extra file.
Tips for accurate results.
Small images embed best; a huge photo makes a very long string.
The result is a full data: URI ready for CSS background or img src.
Copy it with the button so you do not miss a character.
When to use Image to Base64. Embedding an icon or bullet in a single HTML file. Shipping one self-contained email or page. Passing an image as a string between tools.
When you actually reach for this
- You need to turn an image into a text string to embed in code or send as text.
- You want a data URI for inline use in HTML or CSS.
Where this tool stops being accurate
- The string is about 33 percent larger than the file; long for big images.
- It is encoding only, so the visual is identical to the source.
Frequently asked questions
Does the image leave my device?
No. It is read locally and encoded on your device; the resulting string is shown for you to copy and is never uploaded.
Will the format change?
No. The encoder preserves the source format, so a PNG becomes a PNG data URI and a JPG stays a JPG.
Why is the string so long?
Base64 inflates the bytes by about a third and stores them as text, so a detailed image naturally produces a long string — keep embeds small.
When should I use image-to-base64?
When you must carry an image as text, like inlining a tiny icon in CSS. For large images, host the file instead to keep size down.