Data URL and Raw Base64 Input
Paste a complete image data URL or raw Base64 text. The decoder ignores harmless whitespace and validates the payload before creating a preview.
Base64 to Image Converter
Paste a Base64 image string or complete data URL to preview and download the decoded file. Format detection and conversion happen locally in your browser.
Decode Base64 Images Locally
Validate, preview, and download an encoded image without sending the Base64 string to a processing server.
Automatic Format Detection
PNG, JPG, WebP, GIF, SVG, and AVIF signatures are detected when present. A format selector provides a fallback for raw strings without an identifiable signature.
Preview Before Download
Inspect the decoded image, MIME type, and byte size before downloading the file so malformed or incorrectly labelled input is easier to catch.
No Processing Upload
Decoding, validation, preview generation, and download all happen in the browser. The pasted Base64 text is not sent to an Instasize processing server.
Need to Encode an Image Instead?
Create a Complete Data URL
Upload an image to the companion encoder to create a ready-to-copy Base64 data URL while preserving the original file bytes.
How to convert Base64 to an image?
- 1
Step 1: Paste the Base64 text
Enter a complete image data URL or a raw Base64 string. Choose a fallback format when raw input does not identify itself.
- 2
Step 2: Decode and preview
The browser validates the string, decodes up to 10 MB of image bytes, and displays a local preview with the detected type and size.
- 3
Step 3: Download the image
Save the decoded bytes with the matching PNG, JPG, WebP, GIF, SVG, or AVIF file extension.
One of my go-to apps
Great app for filtering photos and even greater app for sizing pictures for not only posts but story photos as well... love this app I mainly use insta size for all my posts now ;)
B
@beachxbunnyFast and Straightforward
Resizing photos for social media should be a cinch, but most editing programs are a pain to use. Of the dozen I’ve used, Instasize is the fastest, easiest and most consistent...
S
@Soho BradGreat Sizes
Perfect app for the exact social media picture sizes. Love it. I use it daily. & I like the premade options they give you for different social medias!
B
@Baby24dollI love instasize
Its the best app. for sizing photos to fit for Instagram or other forms of social media. You can also edit photos and create collages with multiple photos. It’s had been my friend for several years!
J
@Jay townAlways helpful
Always helpful when needing to resize photos
L
@Leobaby96Huge fan
I love this app. Makes posting all types of photos. Love how it makes them fit on different formats
N
@Nicola BellaI’ve been using for years. Can’t work without it.
I use this app everyday to perfectly resize images for all of my social media platforms
T
@The FlywireLOVE
This app saved the day for me! I’m finally able to resize my photos for IG....effortlessly
T
@TamrinaannGreat App
We use this App weekly to resize pics for social media posts. Very user friendly, easy to use program when you want to get in and out quickly...
C
@cle957Paste the Base64 data URL or raw Base64 string into the decoder, choose a format fallback if needed, then preview and download the decoded image.
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