Free Online Image to Base64
The encoding is done from the file bytes in memory. Handy for a logo you want to inline so the browser makes one request instead of two.
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How to use Image to Base64
- Choose the image.
- Pick the output: data URI, raw Base64, or CSS snippet.
- Copy the result.
- Paste it into your stylesheet or HTML.
Questions about Image to Base64
How big can the file be?
Keep inlined assets under roughly 30 KB; larger files slow down the page instead of speeding it up.
Why is the string so long?
Base64 grows about 33 percent because it packs three bytes into four characters.
About Image to Base64
Encode any image as a Base64 data URI with our free online Image to Base64. 100% browser-based, fast, and private—no login or file uploads required.
These image tools handle everyday photo jobs: compress and convert between JPG, PNG and WebP, resize to exact pixels, build QR codes and favicons, pick colours and assemble animated GIFs.
This tool runs in your browser. The file is not uploaded. For photos prefer JPG or WebP at a sensible quality; keep PNG for logos and screenshots with sharp edges or transparency, since JPG would blur them and drop the alpha channel.