FileGizmo Image tools
Convert an image to Base64
Turn a JPG, PNG, or WebP image into a copyable Base64 data URL locally. Useful for inlining small assets, and the image is never uploaded to be encoded.
Your result is ready
Simple by design
Image to Base64 in three steps
Convert a JPG, PNG, or WebP image into a complete Base64 data URL without uploading the source. The output begins with the correct image MIME type and can be copied directly into HTML, CSS, JSON, test fixtures, or small application assets.
Base64 is an encoding format, not compression. Its text representation is usually roughly one-third larger than the original binary file, and large embedded images can make source files difficult to maintain. Data URLs are most useful for tiny icons, placeholders, self-contained demos, email templates with compatible clients, and development fixtures. Regular image files remain preferable for larger website content because browsers can cache them independently.
File reading and encoding run in a dedicated browser worker, keeping the page responsive and the source on your device. FileGizmo displays the final character count and provides a direct copy action. The generated value is not sent to a server, logged, or stored by the tool.
A data URL embeds the image directly in the text of a document, so an HTML page, a stylesheet, or an email template can carry a picture with no separate request. For small assets such as an icon that removes a round trip, which is occasionally worth more than the bytes it costs.
It does cost bytes. Base64 makes the data roughly a third larger than the original file, and unlike a linked image it cannot be cached separately or reused across pages. Past a few kilobytes the trade stops paying and an ordinary image reference is faster.
The output carries the correct MIME type, so it works when pasted straight into an image source or a stylesheet background. That detail is easy to get wrong by hand, and getting it wrong produces an image that silently fails to render.
Typical uses are an inline logo in an HTML email, where external images are often blocked by default, and a small icon in a single-file document that has to survive being emailed around without its assets.
Encoding happens in your browser. It is a small operation, but an unreleased asset uploaded to an encoder is still an unreleased asset sitting in somebody else’s logs.
- 1
Choose a supported image
- 2
Generate its Base64 data URL locally
- 3
Copy the complete value into code or CSS
Good to know
Frequently asked questions
What does the output include?
It includes the MIME type and Base64 payload as a complete data URL.
Is the image uploaded?
No. File reading and encoding happen inside a local worker.
Does Base64 make files smaller?
No. Base64 is usually about one-third larger than the original binary file.
When should data URLs be used?
They suit small embedded assets; normal image files are better for larger content and browser caching.