Image Tools
Image Compressor
Shrink image file size while keeping it visually intact.
Image Tools
Image to Base64
Convert an image to a Base64 string, or back again.
Tool Panel
Processed locallyAbout Image to Base64
Turns an image into a Data URI or raw Base64 and back again — the usual route for inlining small icons.
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Both directions: image → Base64 (as a full `data:` URI or the bare string) and Base64 → image (restores a preview and reports format, dimensions and size).
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It shows the original file size next to the Base64 size: three bytes become four characters, so the result is **about 33% larger**. The `b64Size` figure includes the `data:...;base64,` prefix.
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The decode side validates first (optional `data:` prefix, characters limited to the standard `A–Z a–z 0–9 + /` alphabet with up to two `=` of padding) and fails loudly instead of producing a broken image.
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Pick an image, or paste a string
The file path encodes, the text path decodes — switch with the radio buttons at the top.
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Choose the output shape
Use the `data:` URI when it goes straight into `src="…"` or CSS; use the bare string for JSON fields, logs and configs.
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Copy or download
The encode direction gives text; the decode direction gives a preview and a downloadable image.
Only for small ones: icons, a few small logos, or when you must ship a single-file HTML. Do not inline large images — the payload grows by about a third, it **cannot be cached separately**, and it is parsed as part of the HTML or CSS, which delays first paint. Reference photos as files.
Decoding accepts standard Base64 only: the `+` and `/` alphabet with at most two trailing `=`. Two common mismatches: the URL-safe variant (`-` and `_`) must be mapped back to `+` and `/`, and the line-wrapped form found in email or MIME must have its newlines removed first.
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