Paste Base64 (with or without the data: prefix)
Decoded Image
Paste Base64 above and render it to preview the image.
Base64 turns up in places you did not put it: an email source, a JSON API response, a CSS file, a config export, a log line. Paste the string here and Image Machine decodes it back into the picture, in your browser, with nothing uploaded. It reads the leading bytes to work out what the image really is, so a raw string with no data: prefix still comes back as the right format with the right file extension instead of being blindly saved as PNG. PNG, JPG, WebP, GIF, BMP, ICO, SVG and AVIF are all recognised.
How It Works
Choose a tool
Pick from 160+ tools to resize, convert, compress, or enhance your image.
Upload & edit
Drag and drop your image and adjust the settings. It stays on your device.
Download
Save your result instantly — no watermark, no sign-up required.
Why Image Machine?
Your files never leave your device
All processing runs locally in your browser. Your images are never uploaded to a server.
Completely free
Every tool is free, with no limits, no watermarks, and no hidden costs.
Lightning fast
No upload waiting — your images are processed instantly on your own device.
Professional quality
Pixel-perfect output with full control over format, size, and quality.
Frequently Asked Questions
How do I convert Base64 back to an image?
Paste the string into the box and press Render Image. It works with a full data: URI and with raw Base64 that has no prefix at all. The preview appears immediately and the download button saves it with the correct extension.
My string has no data:image prefix. Will it still work?
Yes. We decode the first few bytes and identify the format from its signature rather than trusting a prefix that may not be there. That is also why a mislabelled string, such as a JPEG announced as image/png, still downloads as a working .jpg.
Why does it say the Base64 is not valid?
Usually the string is truncated, has stray line breaks or quotes from being copied out of code, or is not an image at all. Copy the whole value including its trailing equals signs, and drop anything outside it such as surrounding quotation marks or a trailing comma.
Is there a size limit?
There is no limit we impose, but decoding happens in your browser tab, so a very large string is bounded by your device memory rather than by a server. A desktop handles multi-megabyte strings comfortably; an old phone may not.
Is my data sent anywhere?
No. The decoding runs entirely in your browser and there is no upload endpoint in this application at all. That matters here more than for most tools, because Base64 blobs are often pulled out of internal APIs, emails and configuration files.
How do I go the other way?
Use the Image to Base64 tool, or just switch the toggle at the top of this page. Both directions run on the same page and neither one uploads your file.