Decode raw Base64 or an image data URL into a static PNG, JPEG or WebP. Preview the result and download the original decoded file bytes, entirely on your device.
Your encoded text and decoded image are never uploaded to any server; all analysis and decoding happen locally in your browser. Downloads preserve the decoded file bytes, and no account or image history is needed. A local worker handles Base64 validation and decoding.
Standard Base64 using A–Z, a–z, 0–9, + and /, with valid padding or omitted final padding. ASCII spaces, tabs and line breaks are ignored. Data URLs must use data:image/png;base64, data:image/jpeg;base64, or data:image/webp;base64, followed by encoded bytes. URL-safe Base64, percent-encoded data URLs and extra data URL parameters are not supported.
Static PNG, JPEG and WebP. Input text is limited to 16 MiB of characters and imported text files to 16 MiB of bytes. The decoded file must fit within 10 MiB, 40 megapixels and 16,384 pixels per side. SVG, GIF, AVIF, HEIC and detected animated PNG/WebP are not supported. The browser must also successfully decode the image.
The prefix must match the detected image bytes. Invalid characters, malformed padding, nonzero unused padding bits, truncated content or an unsupported image can cause rejection. Copy the full output from Image to Base64, rather than its capped on-screen preview.
No. The preview is scaled to fit the screen and follows browser orientation handling. The download uses the exact decoded bytes, retains metadata and uses the detected image extension. Use Image Converter or Image Resizer for editing.
No. Base64 is reversible binary-to-text encoding. Anyone with the text can recover the file and any metadata inside it. This tool does not decrypt password-protected content or remove metadata.
Yes. Stop, editing the input or Clear invalidates pending work and removes old downloads. Decoding and preview have a 20-second response limit. Leaving the page releases application-held text and results.
