Question 1

Does Base64 encoding increase file size?

Accepted Answer

Yes. Base64 adds approximately 33% overhead compared to the original binary file size. It's best used for small icons or inline images; for large images, URL references are more efficient.

Question 2

What is the Data URL format?

Accepted Answer

Data URL is the format data:image/png;base64,... — it combines the MIME type and Base64 data into a single string that can be used directly in an HTML img src or CSS background-image.

Question 3

Which image formats are supported?

Accepted Answer

JPG, PNG, GIF, WebP, SVG, and any other format supported by your browser.

Question 4

Is there a file size limit?

Accepted Answer

There is no hard limit, but files over 5 MB may be slow to process depending on your browser and device.

Question 5

Is there a security risk?

Accepted Answer

All conversion happens locally in your browser. Note that Base64 is encoding, not encryption — do not share Base64 strings of sensitive images in public URLs.

Konwerter Base64

Strona główna · Bezpłatne narzędzia obrazów

How to Convert to/from Base64

Base64 Tips & Use Cases

Web Development — Inline Images

API Development — Images in JSON

Email — Bypass External Image Blocking

Frequently Asked Questions

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