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Convert base64 to image online

Convert base64 to image online free. Paste a data URI or base64 string, preview instantly, and download PNG, JPG, or WebP — all in your browser.

What is a base64 to image converter?

A base64 to image converter turns Base64-encoded picture data into a normal image file you can open and share. People search for “base64 to image”, “base 64 to image”, “base64 to img”, “base64 image”, and “image base64” when an API, email, or HTML snippet embeds a photo as text. This free online tool pastes that string, shows a live preview, and lets you download PNG, JPG, or WebP — without uploading anything. For the reverse workflow (PNG to base64 / image to base64), use our Image to Data URI tool.

Base64 to image converter features

Paste, preview, and download — private browser decoding.

  • Paste base64 or data URI

    Accepts raw base64 and data:image/…;base64 strings.

  • Live preview

    See the decoded image before you download.

  • PNG / JPG / WebP export

    Choose the download format and JPG/WebP quality.

  • Whitespace tolerant

    Strips newlines and spaces common in copied API payloads.

  • No server upload

    Base64 to image conversion stays on your device.

How to convert base64 to image

Turn a base64 string into a downloadable picture in a few steps.

  1. Paste your base64

    Copy a data URI or raw base64 image string into the text box.

  2. Convert

    Click Convert to image to decode and preview locally.

  3. Pick a format

    Choose PNG, JPG, or WebP (and quality if needed).

  4. Download

    Save the image file to your device.

Tips for converting base64 to image

Avoid common paste and format mistakes.
  • 01

    Keep the data: prefix when you have it

    A full data URI includes the MIME type and avoids guessing PNG vs JPEG.

  • 02

    Don’t trim the middle of the string

    Truncated base64 usually fails silently or produces a corrupt file.

  • 03

    Need the reverse?

    Encode a file to base64 with Image to Data URI (/image-to-datauri).

  • 04

    Huge strings

    Very large payloads may strain browser memory — prefer file uploads for multi‑MB assets when you control the source.

Base64 to image converters compared

How this free browser decoder stacks up against common alternatives.

  • Online PNG Tools (base64 → PNG)

    Competitor page targeting “base64 to image” and “base64 to img”. Useful reference; this tool focuses on private, no-upload decoding with multi-format download.

  • Base64.guru / similar decode sites

    Often cloud-backed or ad-heavy. Fine for quick checks; less ideal when payloads are confidential.

  • DevTools / local scripts

    Developers can decode with Node Buffer or browser snippets. This page is faster when you just need a preview and a file.

  • This base64 to image tool

    Paste → preview → download in one place, format picker, no account. Best for a private base64 to image / base64 to img workflow.

Great for

When APIs and emails give you base64 instead of a file.

  • API and JSON payloads

    Decode base64 image fields from REST responses into real files.

  • HTML / CSS data URIs

    Extract an embedded data:image string into a PNG or JPG.

  • Email and chat dumps

    Recover pictures from base64 blobs copied out of logs or messages.

  • Quick base64 to img checks

    Verify a base64 string actually decodes to the image you expect.

Why use this base64 to image converter

Fast, free, and private decoding in the browser.

  • 100% free

    No sign-up, no daily caps, no watermarks on the download.

  • Privacy first

    Your base64 string never leaves the browser tab.

  • No desktop app

    Works in Chrome, Firefox, Edge, and Safari on any OS.

  • Flexible input

    Data URIs, raw base64, URL-safe alphabet, and wrapped lines.

Technical details

How this base64 to image converter works in the browser.
Input
data:image/…;base64,… data URIs or raw Base64 / Base64URL image strings (up to ~12 MB of text).
Detection
MIME from data-URI header, with magic-byte sniffing (PNG/JPEG/WebP/GIF/BMP/SVG) as fallback.
Output
Download as PNG, JPG, or WebP; same-type downloads keep original bytes.
Processing
100% client-side — atob / data-URI parse → Blob preview → optional Canvas re-encode.

Sources & References

Authoritative references on Base64, data URIs, and browser image decoding.
  • “Data URLs, URLs prefixed with the data: scheme, allow content creators to embed small files inline in documents.”
    — MDN Web Docs — Data URLs

    Data URLs: A data URI like data:image/png;base64,... embeds image bytes as text. This tool decodes that string back into a downloadable image file. developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URLs

  • “Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format.”
    — Wikipedia — Base64

    Base64: APIs, emails, and JSON often ship images as base64. Converting base64 to image restores a normal PNG, JPG, or WebP file. en.wikipedia.org/wiki/Base64

  • “The atob() method of the Window interface decodes a string of data which has been encoded using Base64 encoding.”
    — MDN Web Docs — Window: atob()

    Window.atob(): Browser-side decoding uses standard Base64 decoding (plus data-URI parsing) so your image never needs a server round-trip. developer.mozilla.org/en-US/docs/Web/API/Window/atob

  • “The Canvas API provides a means for drawing graphics via JavaScript and the HTML canvas element.”
    — MDN Web Docs — Canvas API

    Canvas API: When you pick a different download format, the decoded image is redrawn on Canvas and exported as PNG, JPG, or WebP. developer.mozilla.org/en-US/docs/Web/API/Canvas_API

Frequently Asked Questions

Quick answers about this tool—open a question to read more.