Base64 to Image Converter
Paste Any Base64 String or Data URL — Preview and Download the Image Instantly. No Uploads.
When You Need to Decode a Base64 Image
Debugging & Development
- Preview base64-encoded images from API responses without writing code
- Decode and download images from AI/ML API responses (OpenAI, Claude, Gemini)
- Inspect and verify base64 image data from database records
- Debug data URLs embedded in CSS or HTML source code
Data Recovery
- Extract and save images from base64-encoded JSON payloads
- Recover images stored as base64 strings in application logs
- Decode images embedded in base64-encoded email attachments
- Convert base64 blobs from exported database data back to image files
Testing & QA
- Verify that image encoding APIs produce correct output images
- Check that base64 strings in configuration files decode to valid images
- Validate AI-generated image API responses (image generation models)
- Test canvas export functions that output base64 data URLs
How to Convert Base64 to Image — 3 Steps
Paste Your Base64 String
Paste a full data URL (data:image/…;base64,…) or a raw base64 string into the text area. The tool auto-detects the format.
Decode & Preview
Click Decode — the image is rendered in your browser from the base64 data. View the format, dimensions, and estimated file size.
Download the Image
Click Download Image to save the decoded image as a file. The format is detected from the base64 string's MIME type prefix.
Free Online Base64 to Image Decoder — No Server Required
When working with APIs, databases, or code that stores images as base64 strings, you often need to quickly preview or extract the image without writing code. PicsSizer's base64 decoder accepts both full data URLs (data:image/jpeg;base64,…) and raw base64 strings, renders a live preview in your browser, and lets you download the decoded image as a file. All decoding runs locally using the browser's Image API — no data is sent to any server.
Common Sources of Base64-Encoded Images
AI image generation APIs (DALL-E, Stable Diffusion, Midjourney API, Google Imagen) return generated images as base64 strings in JSON response bodies. Vision AI APIs (OpenAI GPT-4V, Anthropic Claude, Google Gemini) also accept and sometimes return images in base64 format. HTML canvas exports via canvas.toDataURL() produce data URLs. Email systems encode image attachments as base64 in MIME messages. Database fields that store image data as TEXT blobs often use base64 encoding. Each of these produces base64 strings that can be decoded back to viewable, downloadable images using this tool.
Tips for Decoding Base64 Images
If the base64 string starts with iVBORw0KGgo, it is a PNG. If it starts with /9j/, it is a JPG. If it starts with R0lGOD, it is a GIF. If it starts with UklGR, it is a WebP. The decoder auto-detects these from the binary header bytes — you do not need to know the format before pasting. If the image fails to decode, check that the string has no extra spaces, line breaks, or non-base64 characters (only A–Z, a–z, 0–9, +, /, and = padding are valid). Some APIs wrap base64 in JSON strings with escaped slashes (\/9j\/) — unescape them before pasting.
Related Developer Tools
More tools for developers working with images in code.
Image to Base64
Convert any image file to a base64 data URL for use in CSS or HTML.
Image Converter
Convert the decoded image between JPG, PNG, WebP, and other formats.
Image Metadata Viewer
View EXIF and metadata embedded in image files after decoding.
Image Compressor
Compress the decoded image to reduce file size before saving.
Base64 to Image — FAQ
Common questions about decoding base64 strings to images