Base64 to Image
Convert Base64 string back to image.
Convert Base64 string back to image.
This free Base64 to Image from KX Toolkit is part of our all-in-one online toolkit. It runs entirely in your browser, so your data never leaves your device for client-side operations. 100% free, forever - no paywall, no credit card, no trial.
How to use the Base64 to Image
- Drop your image into the upload area, or click to browse.
- Pick the output format, size or compression level.
- Click "Process" - the tool runs and shows a preview.
- Download the result. Most tools delete your file from the server immediately after.
What you can do with the Base64 to Image
- Optimise images for web pages and faster Core Web Vitals.
- Resize photos for social media specs (1080×1080, 1200×630, etc.).
- Convert HEIC, AVIF or WebP to a more compatible format.
- Strip EXIF metadata before sharing photos online.
Why use KX Toolkit's Base64 to Image
- Browser-based: Works on Windows, macOS, Linux, iOS and Android - no install, no extension.
- Privacy-first: Client-side tools never upload your data; server-side tools delete files right after processing.
- Mobile-friendly: Full feature parity on phones and tablets - not a stripped-down view.
- Fast: Optimised for instant feedback. No artificial waiting screens, no email-gated downloads.
- One hub for everything: 300+ tools across SEO, text, image, PDF, code, color, calculators and more - skip switching between sites.
Tips for the best results
Compress your image AFTER resizing - running them in that order produces smaller files at the same visual quality.
Related Image Tools
If you find this tool useful, explore the full Image Tools collection or browse our complete tool directory. KX Toolkit is built for marketers, developers, designers, students and anyone who needs a quick utility without signing up for yet another SaaS.
How do I turn a Base64 string back into an image?
Paste the Base64 string into the input field and a preview appears together with a download button. The tool detects whether the string starts with a data URL prefix or is just raw Base64, and handles both cases. If the string is invalid it highlights the field and explains the problem. Once you have the preview, save it as a regular image file in the original format, ready to drop into a design tool or share with someone else.
Do I need to include the data URL prefix?
You do not have to. If the string already begins with the data colon prefix the tool extracts the format from there. If it is raw Base64, the tool inspects the first few bytes to detect whether the data is a PNG, JPG, GIF, WebP or SVG. You can also pick the format manually from a dropdown when automatic detection fails, for example with unusual or partial inputs. The decoded file always has the correct extension once it downloads.
Why does my Base64 string fail to decode?
The most common causes are missing padding characters at the end, line breaks introduced by copying from a terminal, or non Base64 characters slipping in. The decoder is forgiving and ignores whitespace, but stray symbols stop the conversion. If the string is split across many lines, paste the whole block at once rather than line by line. If it still fails, check that the original encoding produced a complete string and not a truncated copy.
In what formats can I save the decoded image?
The image saves in whatever format the original Base64 represents, so a PNG remains a PNG and a JPG stays a JPG. There is also an option to convert during the download, for example to save a Base64 PNG as a JPG to reduce file size. SVG strings can be saved as either an SVG file or rendered to PNG at any size. The download uses a sensible default file name based on the detected format.
Is the decoded image stored anywhere?
No. The Base64 string is decoded by the browser into a blob, which is offered to you as a download. Nothing is uploaded or saved on a server. This makes the tool safe to use when working with embedded images from internal documents or sensitive HTML emails. Once you close the page the blob is freed automatically, so there is no leftover copy of the image hiding on your device.
Can I decode many Base64 strings at once?
Yes. Switch to batch mode, where you can paste several strings separated by blank lines or upload a text file containing one string per line. The tool decodes each one in turn and shows a thumbnail. You can download the whole batch as a ZIP archive or save individual files. This is useful for extracting embedded images from API responses, JSON exports or legacy databases that stored attachments as Base64 columns.
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